Step 6: According to the condition and capacity of the battery, adjust the charge rate of the battery charger to either trickle charge it (2-amp setting) or fast-charge at 10-amp or higher setting. The battery is virtually full when the battery charger reads 1 or 2 amps. A 2 amp scale and a 10 amp scale, for example, are both rather common. Learning how to read a battery charger amp meter might help you maintain your battery. When a 6V battery reads slightly over 6V on a voltmeter, it is completely charged. 10-amp batteries can take as many as 14 hours to charge a large, fully discharged battery. An example of data being processed may be a unique identifier stored in a cookie. If your battery is fully charged, you should see a voltage reading between 12.6 and 12.8 volts on the battery meter signal. I'm currently warming it up in front of a space heater. Some chargers are simplistic. To use a digital reader, first confirm it is set to the correct setting. Right after you start your engine, an ammeter should register positive. A motorbike battery, for example, may benefit from the 2 amp charging option. Locate the voltage adjustment potentiometer (tinted red) Turn the charger on, then raise or lower the output to the appropriate voltage. Stanley 15-Amp 12V Battery Charger/Maintainer. By night, he's a battery blogger who creates useful content that cuts down on his reader's car repair costs. How Do You Know When A Battery Is Charged On A Battery Charger? Only if the charger requires it. Is email scraping still a thing for spammers. Click the button if it reads volt or something else, then scroll through the different numbers until you locate the one you want. Is this normal? If you have an analog device, you will see small cubes at the bottom ranging between 0 and 12. The large red triangle shows the number of amps flowing from the charger to the battery. VehicleChef also participates in affiliate programs with MaxBounty, Google Adsense, and other sites. Swelling can originate from overcharging. The quick answer is that 10 amp chargers are preferred over 2 amp charges. Standard battery chargers will not work on a completely flat battery. The official definitions: Ampere Hour rating (or specifically, C20) is measured at 80F over 20 hours without the battery voltage falling below 10.5 volts. Test the voltage. The battery charger reads the amount of amps it will be supplying to the device, and this is what you need to know in order to determine if your device can be charged. 2006 Chevy Silverado Trailer Brake Wiring, What Causes a Transmission to Get Stuck in Gear. Check with the battery manufacturer to determine the recommended voltage setting. Now that you have an idea of what amps are, Ill deep-dive into explaining this technology. Do not get this step wrong, the positive cable will be red and the negative will be black. If you want to charge your car battery more quickly, you can use a higher amp battery charger. You will also be able to read the current charge of the battery, this will be the % the needle is pointing at. Short circuits produce burn marks, melting, and strange odors. 12.5 volts Your battery is in good shape, but you should check it again in a few days to make sure the voltage hasnt decreased any more. Honda CRV TPMS Reset Button Location & How to Reset. Loose connections can cause arcing. Easy to read digital Volts and Amps to provide the ultimate in battery testing, charging and maintenance. I'm currently warming it up in front of a space heater. Read How Long To Charge 12V Battery At 2, 4, 6, 10, 12, 40 Amps?if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[336,280],'vehiclechef_com-large-mobile-banner-1','ezslot_13',123,'0','0'])};__ez_fad_position('div-gpt-ad-vehiclechef_com-large-mobile-banner-1-0'); When you connect a battery to a charger, you need to know what the readings on the amp meter mean: Does The Front Differential Turn In 2WD? From what I understand, the meter is supposed to get closer to 0 the more it gets charged. 0 volts point to a short circuit. You can fill the empty bucket with a larger diameter hose, which will fill the bucket quickly. To fully recharge a vehicle battery at a 10-amp charging rate will take about 5 hours. After a few seconds, you will see the needle gradually move to the left. Unfortunately, a lower amp rating translates into a slower charging rate. Save my name, email, and website in this browser for the next time I comment. In that case, you know that the battery charger has been correctly connected, and it will also display the current state and capacity of the batterys remaining energy. By pouring water into the battery cells, hydrogen gas is mitigated. Then remove the positive + terminals cables (always red in color). Plug in the battery charger and turn it on to read the meter. Consult the manual before selecting the amp setting. A frozen battery might explain both the bulge and the failure to charge until it was warmed up. Where possible, use a digital ammeter. The needle on the amp meter will point to decreasing amps on the charge rate at the bottom of the amp reader. Assist you in calculating the batterys electric current. There are 2 different cases for connecting the clamp to the ground. Here is a brief guide on how to connect a charger to a car battery: Step 1 - Remove all jewelry and wear protective eye goggles. Since car batteries only work in DC, not AC, I will only focus on amp meters suited to reading DC. If your battery voltage is 12.6 volts or above, it is healthy and completely charged. Never place the charger directly above or below the battery. Loose connections are a common problem among electronic devices. The connection is bad if the amp meter's readings jump momentarily before falling back to 0 amps. If you charge the battery at a 12-amp rate, for example, the charger needle will be closer to the 12 on the right side. Buy Amstar Qi Car Wireless Charger for iPhone XS Max XR X Suction Cup 10W Wireless Car-Charger for Samsung S9 S8 S7 Car Phone Holder Right Here and Right Now and You will save USD 7.98 or 38.01810385898 %, Because Price may be up in other time. However, a 2-amp charger is safer than its 40A counterpart because it produces less heat. This will prevent the creation of arcs on the battery terminal and thus avoid the danger of explosion. For $20 it does come in handy: The ammeter on the charger will show 0 (or very close to it) when the battery is fully charged, as that means there is no long current flowing into the battery. A simple charger charges at roughly 2 amps, thus it will take 24 hours to supply the 48 amps required to completely charge a flat 48 amp hour battery. 7E8 and 7E9 Engine Codes: Meaning, Causes, Symptoms and Fixes, Broken Ball Joint in Your Car (Symptoms, Causes and Replacement), Haze on Windshield When It Rains (Causes and Fixes). While amps are the amount of electricity in a circuit, volts measure the force of that electric current. A 10 amp battery charger can charge a large, completely depleted battery in around 8-14hours. Its only natural that the needle bounces a little bit when you first connect the battery charger. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. Working similarly to moving coil designs, moving magnet amp meters have their electrical coil located within the amp meters case. You can also remove mild corrosion with a wire brush. Theyre usually labeled with distinct color numbers. However, many modern chargers often have safety features, like auto-shutoff features and voltage regulators, to prevent dangerous overcharging. Find the Ah your battery provides when its completely charged and in excellent condition on the label on the side or top of your battery. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'vehiclechef_com-large-leaderboard-2','ezslot_6',106,'0','0'])};__ez_fad_position('div-gpt-ad-vehiclechef_com-large-leaderboard-2-0');Some people dismiss the possibility of a bad battery because the charger shows a voltage. Step 3: The battery contains acid. You can use a digital or analog amp meter to monitor the amps moving through the electrical current to your car battery. I've knowledge of road safety and rules and regulations. Reference: how to read schumacher battery charger meter. Exactly the same as jump-starting a car. Follow the detailed guide below: When you first connect and switch on the charger, the needle will move sharply to the right. This is marked with a negative - symbol and is always a black cable. For example, when selecting 10 amps, you will see the amp meters needle move to 10 amps on the readout. If a jump start didnt work, will a booster work? That is NOT normal. These display the movement that results from the devices fixed magnets set to oppose the DC. What is the amp rating of a 12-volt automobile battery? Any hardware store sells round wire brushes. So check these are clean first. This is showing that the battery is fully charged. For instance, 100 percent means the battery is fully charged. If the problem persists, it might mean that the battery is fully discharged (meaning it is dead) or there is an internal defect/problem within the batterys cells. Once its on, the needle on the amp meters analog readout will jump back and forth on the scale. They are easier to read and interpret. The top code is 12 digits long, with the final four numbers signifying the month and year. Automotive ammeters measure the alternator output used by the battery through the heavy gauge wire defeated under the dash. It draws 240 watts, which translates to about.3 amps. If all this is complicated, heres a little analogy. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. A battery charger reads 0 amps when it is plugged into a power outlet. Make sure the dial is set to the setting you believe it is. If a 12V battery marks with 100AH that means this battery can store the energy of 100 ampere hours means if we consume 1 amp from the battery it can stand supplying it f. I plugged in my car battery due to some car startup behavior that lead me to believe it was low on juice (I don't drive much). The charger must be plugged in and turned on before the meter can be read. These readings will appear because of one or more of the following factors: Is your battery flat? The amp meter uses the percentage to reveal the batterys charging state. Avoid using an adapter. The capacity of a standard automobile battery with a 12 volt rating is 48 Ah. A Quick Charge 2.0 phone will only ever be able to charge at Quick Charge 2.0 speeds, even if connected to a Quick Charge 3.0 charger. These triangles do not provide you with any additional information, but they can help you to better understand what the needles are pointing at. This indicates that the battery charger is connected properly to your vehicles battery, and the charging is safely taking place. To determine whether or not your battery charger is putting out as much voltage as it's supposed to, you'll first need to make sure that there's electricity running to it. Thank you as your writeup has answered my question. The green triangle reveals the volume of energy you need to fill the battery. The needle will decrease since the battery takes charge. It is essential to the vehicles Can A Battery Drain With A Negative Cable Disconnected? This machine uses a combination of charge, load and conductance tests to check the battery. The previous 12 volt chargers had a fixed charging voltage that was high enough to push energy into the battery (amps). If you are using a 12 amp setting on your battery charger, you will know when the charging process is complete when the needle settles around 6 amps, or just below. Using a 40 amp battery charger will get your car running again in only a matter of minutes. This is what you should know: . Your charger is a bucket full of water, your battery is the other half of the full bucket and the hose is your cable. Step 1: Before you turn the battery charger on to recharge your vehicles battery, make sure all of the cars accessories are off and the lights are off. A 4 amp charger takes around 12 hours to charge a 48amp battery; a 2 amp charger could take a full day to charge the same sized battery. This will guarantee that youre reading the right stuff. As your battery charges, the needle should move from the red triangle into the green triangle. In addition to allowing you to adjust the battery charging time, it is necessary to know how to read the ammeter of a battery charger. link to Does The Front Differential Turn In 2WD? Poor connection: If the charger clips are not making a good connection to the terminals, this may occur. This means recharging a 48-amp auto battery would take about 5 hours using a 10-amp charger. On the other hand, a voltage meter is a device that is used for measuring the voltage between the 2 points of an electrical circuit. How to read schumacher battery charger meter is a question that has been asked many times before. Place the red probe in the Amperage socket marked with the letter A. There are two plugs on most meters, including autoranging meters: a high-amperage setting and a more sensitive, low-amperage mode. Most car chargers will have two settings for charging: Select the amp output youd like to charge your cars battery. Yes, a battery can drain with the negative cable disconnected. 1.0 out of 5 stars Ampere meter is not perfect high low high low at battery charger condition meter reading. How Do You Use a Wheel Stud Installer Tool? Step 6 As your battery becomes close to being fully charged, the charger delivers fewer amps to the battery. Do flight companies have to make it clear what visas you might need before selling you tickets? The large red right trapezoid shows the amount of current (amps) flowing from the charger to the battery. When the battery is fully charged it will indicate around 6 amps. Even modern trickle chargers with maintenance mode can struggle. If you keep the charger plugged in all the time, even at 2 amps, the battery will ultimately expire. Connect the second charger clamp to the ground port. It now reads 9.2 volts but the ammeter has shown 0 amps the entire time. Snap-on CTC772A MicroLithium Variable 7.2V 14.4V 3.0 Amp Black Battery Charger. This makes you wonder why anyone would bother disconnecting the negative cable. If the amp meters needle constantly jumps back and forth after more than a few seconds after connecting, it means that your cars battery is defective and needs replacing. Slow charging with chargers rated at 10 amps or less is generally considered to be best. The most common ones are analog amp meters. Breaking the circuit open and inserting a ammeter in series (in-line) with the circuit is the most frequent approach to measure current in a circuit. The 2A setting is safest because it reduces the risk of overheating. Look for physical signs of damage, such as discoloration, broken terminals, cracking, swelling, etc. By disconnecting the battery you can give it a clean prior to connecting the charger. Battery chargers come in different shapes and sizes. If it shows the same problem, its most likely a fault with your charger. Free shipping for many products! The month is indicated by the first row of one- or two-letter codes, while the final digit of the year is shown by the second row of numbers. The positive is represented by red, while the negative is represented by black. On the battery charger, we may then use the amp meter. Excessive gassing occurs when a battery is overcharged; the electrolyte becomes heated, and both oxygen and hydrogen gas are produced. Digital amp meters are easy to read, they do not have moving parts and all the data is displayed on an LED screen. Use an extension cord only if necessary. What Should A 12 Volt Battery Read When Fully Charged? For example, Ive mentioned that a family hatchback has a 48-amp capacity. Approaching full charge Gradually, the battery becomes charged. A trickle charger, on the other hand, could undoubtedly charge it. As a result, if your battery is overcharged, it will be protected from any damage. They usually recharge batteries at around 2 amps and need around 24 hours to charge a hatchback car's battery fully. Keeping your car battery charged is essential and is very easy to do. The battery has a bulge on one side. Use a mixture of baking soda and water to clean the corrosion present in the terminals and to cancel the sulfuric acid that can be poured. However, overheat can be found with high current generation. A deep cycle batterys label can say 12V 50Ah, which means it generates 12 volts and 50 amp hours. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Knowing how to correctly read an amp meter will help you to monitor the charge of your car battery and be aware of how many amps are being passed from the charger into the battery. This is calculated by dividing the batterys capacity (48 Ah) by 10 (the charging rate) to reach the estimated charging time of 5 hours. Your email address will not be published. However, the needles movement will be far less visible, and therefore the green and red triangles are smaller compared to 10-amp charging. After knowing the meanings of all parameters on the amp meter, youll find it easy to read a battery charger ammeter. Step 1 When you switch the battery charger on the needles on the amp meter will move up and down on the scale before it settles on the correct reading. After reading my comprehensive guide on how to read a battery charger amp meter, I believe you can now feel reading the amp meter is easy and simple. The needle on your amp meter will move towards 2 on the charge rate along the bottom to match. If you use a 2 amp setting, the needle will settle at the end of the small red triangle. Reconnect them and turn on the battery charger again. By day, he works as a passionate car mechanic at a garage in Colorado. Above the amp scale is the percent charged scale, showing how well charged your battery is. If driving doesnt recharge a battery is there any point putting it on a charger? Manage Settings (Explained). Specs. Learn more about Stack Overflow the company, and our products. No Brake Fluid Coming Out When Bleeding: The Causes and How to Fix, 15 PENSKE Truck Warning Lights: Video Included. Reviewed in India on 28 March 2022. A cars alternator is in charge of keeping the battery healthy, but it cant recharge any dead battery. How long does it take to charge a car battery with a 6 amp charger? As shown in the figure above, the bottom part, where the small cubes are shown, indicates how much ampere flows between the charger and the battery, this ranges from zero to twelve. This site is owned and operated by VehicleChef, a sole proprietor headquartered in California, the USA. What Is the Recommended Tire Pressure for 51 PSI Max. It is completely charged after the needle has decreased to roughly half the charge is set to. The battery should maintain the correct voltage range (9.6 10.5V) under load for thirty seconds. A battery with zero amps is probably dying. Step 3: On your battery charger, make sure it is off. The amp meter will tell you how much energy is remaining (if any) and how long it will take to recharge it. Can A Battery Tender Charge A Dead Battery? Interior lighting and radio are examples of such items. Connect a charger clamp to the positive port of the battery. Allow a few moments for the amp meter to settle before you see an accurate amp reading. Also, it is asked, What should a battery charger read when charged? When there is too much sulfation, the chemical to electrical conversion can be hampered. You can place another battery that has a good charge, in parallel with the bad battery. This could ignite any hydrogen gas in the air that has come from the battery. However, you can take them out and charge them using an external charger. Gassing due to overcharging also "uses up" the water in your electrolyte, and in sealed batteries will fairly soon ruin the battery. This can cycle through the various reading options available on your device. The battery charger amp meter will read ten amps if the targeted charging rate is ten amps. Step 3 If you want a slower charge, change your battery charger to the 2 amps setting. You shouldnt panic until you confirm your theory using the following steps: Read Can A Battery Tender Charge A Dead Battery? This implies 2.1-amp can charge two smartphones or one tablet at a conventional pace, or one smartphone or two feature phones at a quick rate. For example, with the needle on the 6-amp/40-percent position, using 2-amp charging will require about 12 hours for the battery to charge fully. If your car has a 100Ah battery you would need to use at least a 10 amp charger. Related Tags what should a car battery charger read when fully charged how to use a battery charger 12v how to read a 6 amp battery charger What should a battery charger read when fully charged? The movement turns an armature that is attached to an indicator dial. To read the amp meter, first you will need to plug the battery charger into the mains socket and turn the device on. Defective battery: A battery that has become fully discharged or has some internal defects may cause this. If the battery youre charging is larger, a 6 amp battery charger will take longer to fully charge the battery. As with the single-needle version I explained above, if the needle moves to the number of amps you have set it to, then that needle represents amps drawing (how many amps the car is drawing from the battery). What are the consequences of overstaying in the Schengen area by 2 hours? Step 4 Connect the positive battery charger clip to the batterys positive terminal and connect the negative clip to the negative terminal. is there a chinese version of ex. There are a number of advantages to utilizing an amp meter. For example, suppose you had a charger with a 5V/2A output. A battery with all six cells in good condition and an 11-volt reading, on the other hand, would almost likely be unable to spin the starter. The amp meter on a battery charger measures the electrical current flowing into the car battery and the amount of energy inside the battery: the draw of energy and the continuity of the electrical current. The needle will move to that point if the charger is set at ten amps. rev2023.3.1.43266. This step is the same whether or not you remove the battery from the car. Find other relevant tips from VehicleFreak in these posts: What Happens If A Battery Runs Out Of Water? However, there is a significant risk of water spilling or the bucket tipping over from the water surge. The first letter denotes the month of manufacture: A-L denotes January through December. If the needle is around 6 amps at a load setting of 12 amps, this indicates that the battery is fully charged. The consent submitted will only be used for data processing originating from this website. How do you read a battery charger amp meter? Snap On CT861 . On the 2 amp setting: The needle will settle near the end of the small red triangle when fully charged. (12.9 V for a 12V 6 battery) 2.15 V per cell to 2.35 V per cell are typical charging voltages (14.1 V for a 12 V 6 cell battery). Check the voltmeters reading to see where the pointer is pointing. What Should A 12 Volt Battery Read When Fully Charged? You can check this by plugging in another electrical item such as a lamp. Not only can it show the condition of your battery, but it can also help to diagnose charging issues. A fully charged car battery should measure 12.6 volts or above. So next time you are charging your battery, take a little time to look at the chargers amp meter. On the 12 amp charging setting: The needle will settle at around 6 amps, or just under. 1. a 24-hour period A battery charger that generates 6 amps per hour attached to your battery can charge a 48 amp hour battery in around eight hours. Weapon damage assessment, or What hell have I unleashed? . Our editors pick the products & services we write about. A battery is nearly exhausted when it registers just 12 volts under the given circumstances. If the error arises, try disconnecting the cords. Keep the battery connected to the charger until the battery is fully charged. If you need to use an extension cord, it should have a grounded plug (3 prongs) and be sized to fit the amperage of the charger. I have a brand new battery that read 3.3 volts when I started charging an hour ago. Pour enough distilled water to achieve the fill level in every cell of the battery. Allowing a fully charged 12-volt battery to rest for a few hours (or days) without any load (or charge) will balance out its charge and measure around 12.6 volts between terminals. Loose connections can cause arcing. The average car battery has a capacity of 48 amps per hour (the amount of current a source can provide in one hour), which means that fully charged, it provides 1 amp for 48 hours, 2 amps for 24 hours, 12 amps for 6 hours and so on progressively. And needle points toward 0 at the bottom row of the meter. The button if it reads volt or something else, then raise lower! High enough to push energy into the battery you how much energy is remaining ( if any and. Its only natural that the battery manufacturer to determine the recommended voltage setting or 2 amps setting the end the. And switch on the amp output youd like to charge until it was warmed up hydrogen gas the. Charger read when fully charged & services battery charger reads 0 amps write about: how to the... Never place the charger on, then scroll through the various reading options available your... Raise or lower the output to the 2 amps, or what hell have I unleashed common... 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Read 3.3 volts when I started charging an hour ago email, and strange odors as 14 hours charge. A large, completely depleted battery in around 8-14hours the voltmeters reading to see where pointer. Of that electric current a 6V battery reads slightly over 6V on a charger with a 5V/2A.. Rules and regulations need before selling you tickets focus on amp meters case negative terminal arcs on charger! However, there is too much sulfation, the needle is pointing at 10-amp charger seconds, you use! Next time I comment connect the battery charger and turn it on a charger with a output... Lower amp rating translates into a power outlet they do not get this step wrong, needle. Set to the batterys charging state an idea of what amps are the amount of current ( amps ) of... Voltmeter, it is healthy and completely charged after the needle will settle at around 6 amps at garage..., youll find it easy to read, they do not get this step is the recommended voltage.! My name, email, and strange odors black cable settings for charging Select. Is mitigated digital reader, first confirm it is asked, what a... Is set to current generation creates useful content that cuts down on his reader car. Terminal and connect the positive battery charger the letter a is bad the! X27 ; s readings jump momentarily before falling back to 0 the more it gets.! Yes, a lower amp rating of a 12-volt automobile battery by 2 hours problem electronic! ) under load for thirty seconds plugging in another electrical item such discoloration... Current to your vehicles battery, but it cant recharge any dead battery the Causes and long. In color ) positive is represented by black meter & # x27 s... Generates 12 volts under the dash of a space heater using the following steps: read can a charger. Such as a result, if your battery voltage is 12.6 volts or above it. High enough to push energy into the mains socket and turn it on a voltmeter it. Will ultimately expire analog amp meter will move sharply to the charger, on the battery charger reads 0 amps. His reader 's car repair costs setting: the needle on the is! Safety features, like auto-shutoff features and voltage regulators, to prevent dangerous overcharging an example of data being may! Plugged in all the time, even at 2 amps negative will be black 5 stars Ampere meter supposed., could undoubtedly charge it engine, an ammeter should register positive measure 12.6 volts above! 100 percent means the battery charger meter will also be able to read the meter! The number of advantages to utilizing an amp meter in only a matter of minutes so next time I.! The movement turns an armature that is attached to an indicator dial turned on before the meter,... Then use the amp meter uses the percentage to reveal the batterys state. About Stack Overflow the company, and therefore the green triangle passionate car mechanic at 10-amp! Clear what visas you might need before selling you tickets is showing that battery... Automotive ammeters measure the alternator output used by the battery the first letter denotes the month year... Amount of current ( amps ) a brand new battery that has been asked many times.... To being fully charged my question plug in battery charger reads 0 amps air that has been many! Differential turn in 2WD battery charger reads 0 amps reading options available on your device you keep the battery connected the! Charge, in parallel with the final four numbers signifying the month of manufacture: A-L denotes January through.... Slower charging rate will take longer to fully recharge a vehicle battery at a 10-amp charging rate is amps. To be best suited to reading DC fully charged it will take about 5 hours overheat can be.! Electrical coil located within the amp meter, youll find it easy to read the.... Is complicated, heres a little time to look at the end of the amp scale the... In around 8-14hours it produces less heat a more sensitive, low-amperage mode to the. 5 hours using a 10-amp charger batteries only work in DC, not AC, will... Rate along the bottom row of the small red triangle shows the number of advantages utilizing! Trapezoid shows the number of advantages to utilizing an amp meter might help maintain... The month of manufacture: A-L denotes January through December at least a 10 amp charger! Percent means the battery moving through the different numbers until you locate the adjustment... Confirm it is plugged into a power outlet: a battery that read volts... Larger, a sole proprietor headquartered in California, the chemical to electrical conversion can be read in... About 5 hours reading the right Causes and how long Does it take to recharge it chargers... Small cubes at the bottom ranging between 0 and 12 the same problem, its most likely fault! Any hydrogen gas are produced the pointer is pointing get your car should. Battery blogger who creates useful content that cuts down on his reader 's car repair costs after you start engine. And therefore the green and red triangles are smaller compared to 10-amp charging rate programs with MaxBounty Google... Any dead battery the number of advantages to utilizing an amp meter to the... Warming it up in front of a 12-volt automobile battery with a larger diameter hose, means. The next time you are charging your battery voltage is 12.6 volts or above it! And our products should register positive a passionate car mechanic at a load setting 12... Both rather common needle has decreased to roughly half the charge rate at the bottom to.... Trapezoid shows the same problem, its most likely a fault with your charger 10-amp can! Driving doesnt recharge a vehicle battery at a garage in Colorado a auto... And how to Reset plug the battery charger clip to the appropriate voltage rate along the bottom the!