Take a voltage reading for reference and make sure to write it down. I discharged this cell with a small load. Battery Test/Analyze 6 & 12 Volt Fire Alarm Batteries SLA, VRLA, GEL & AGM Batteries 3 Ahr to 140 Ahr. While the starter is spinning, observe the voltage. I could correlate voltage with capacity. If the leads are short, it can be difficult to move the tester to a position thats easy to read. Find Distributor Features Specifications Downloads Key Features Model # BAT-200. Supplied:ACT 612 Intelligent Battery Tester, ACT 612TL Test Leads, ACT 430N Soft Carry Case, Sample ACT BTL Labels, Operating Instructions and Certificate of Calibration. Backfiring. You can calculate it as t = 1/C. Capable of testing different types of batteries. Part # 24336. The information I read indicated that if the battery was a minimum of 12.1 Volts it was ok. is a compact, easy to use service tool for testing 12 Volt rechargeable batteries. Step # 2 Free shipping. Also, How do you test a battery with a multimeter? The load resistor should be designed in such a way that it should take maximum of 1 Amp current from the battery. For this test we will assume that the batteries in question are 12v. Share it with us! This is not meant to test anything other than the battery, but it is a great place to start if you are having electrical problems. One of the two batteries (in series) is warmer than the other. 10. A battery load tester or hydrometer tests your battery to determine if it should be replaced. When You make the intelligent choice for ultimate reliability, ease of use and simple implementation, You are choosing the same tester used by the industrys leading NFPA compliance testing companies worldwide. Make sure to interrupt the copper traces underneath the LM358. Fully automatic testing. The starter should be running at normal speed. The ACT 612 will test 6V battery models between 1.2Ah and 10Ah, and 12V battery models between 1.2Ah and 100Ah. Amprobe. Great project! That battery rates 260 cycles at 100% DOD, ie to 1.75v. When You make the intelligent choice for ultimate reliability, ease of use and simple implementation, You are choosing the same tester used by the industry's leading NFPA compliance testing companies worldwide. During the load test the enclosure of the battery tester may become warm, this is normal. Then, to lighten the pressure on the battery, have someone switch on the headlights on your automobile. Your Fire Alarm Battery Testing Compliance Solution. Should contain only letters, numbers, and (' - .)! Download Table | Charging test result for 12V 7AH battery using the developed battery charger from publication: An Improved Microcontroller Based Lead Acid Battery Charger | With the continued . 1. Onscreen prompts walk users through each test. They suggest waiting for at least a couple of hours after charging before testing. I will apply those chsnges, What programs are doing in electrical circuits for universal board, Reply The plugs on the battery are a slightly . Thermal printer paper roll is 58mm width and 7.5m long. Be aware that if you do, some dashboard functions such as a clock or audio system anti-theft feature that require a constant charge will be disabled and youll need to reset them after re-installing the battery. Similarly, What does it mean to load test a battery? Try to charge the battery with the 12 volt charger. The first thing to do is to get a pen, a notebook, a voltmeter, and a battery charger. Clearly displays available battery life, handles starter load tests and checks the alternator. on Introduction, Could I use an IRFP250 MOSFET ?It has a G-S threshold of min-2v max-4vThanks. Step # 1 Disconnect the battery from the system, remove cables and connectors, and clean off the terminals. Voltage test range: 1.5-30V.5. Peak load testing involves putting a heavy load on the server for a short period of time to simulate the highest demand that would be created during peak user periods, such as credit card verification between noon and 1 PM on Christmas Eve. Hook positive and negative battery cables onto the battery posts and set the charger to fast charge or boost. What are the most common load testing tools? On the basis of 7AH nominal capacity and using C20 as a conservative guess then you need a resistor that will consume 7/20 amps. I calculated I got these value / wattage resisters to get same amount of current printed on the battery. Old torch convert. LCD screen and menu can be difficult to navigate without reviewing the instructions. For example, a 50Ah battery can deliver a current of 1 amp for 50 hours or 5 amps for 10 hours. 12v lifepo4 batteries more value that are durable. You can do this with any other 12 volt battery, including a car battery, using jumper cables, but DO NOT start the engine of the car if you are using one. Traditionally, battery load testers are designed to give results within 15 seconds, but some claim that they can do it quicker. The main distinction is the objective of each: Load testing show you how a system performs under a realistic load. Also, it is asked, Can a dead battery be load tested? Amprobe. R=V/I so R= 12*20/7 = approx 34ohms. 40A 4Ah to 7 Ah . LM339 has open collector output, and it needs a pull up resistor to drive the output high. Hopefully, my battery is working good and doesnt need to be replaced. 12 volts battery: max voltage is around 13.1V - 13.3V & min voltage is around 11.1V - 11.3V. Start by holding your battery flat-side down an inch or two over a table to test it. Related Searches: . 4W; Calculate the single-unit-cell discharge power Pc = Pb/6 = 543. A healthy battery wont lose noticeable charge during that time. SG was 0! Free In-Store or Curbside Pick Up. Simple in operation, the ACT 612 simulates a full 20 hour (C20) discharge test in seconds and displays the DC Voltage results and Ah capacity available. After the charger indicates that the battery is fully charged, or if it has charged for more than 8 hours, disconnect the charger from the battery. Simple in operation, the ACT 612 simulates a full 20 hour (C20) discharge test in seconds and displays the DC Voltage results and Ah capacity available. Sponsored. Peeled off the APC label & the supplier is Kung Long. 2.5AH TO 14 AH. For a big rig, that could be 1,000 amps. 2 years ago Vehicle battery health is often overlooked, yet a quick and easy check a couple of times a year with a quality battery load tester can identify problems before your battery lets you down (and you just know that could happen at the most inconvenient time and place). Testing the battery's voltage, then putting an electrical load on it, can help determine the battery's condition, often without having to remove it from the motorcycle. The ACT 612 uses advanced pulse load technology to analyze Ah capacity, based on the batterys temperature and state of charge. By email or phone - we're here to answer your questions as best we can. How long will 48v 20ah battery last? It works conveniently from inside your vehicle, in the dashboard power outlet/cigarette lighter socket. A 2C battery would need just half an hour to load 100 Ah, while a 0.5C battery requires two hours. Now you should be able to build your own constant current load. I used a Load of 36R 5 Watts across the terminals to apply a load. Andeman BM510 Professional grade 6/12/24V Car Battery Tester Battery Load Tester Automotive Digital Auto Battery Analyzer Alternator Starter Tester 0 review COD. Devices are also available to check alkaline, lithium ion and nickel types used in digital cameras, flashlights, etc. As you might remember from our article on Ohm's law, the power P of an electrical device is equal to voltage V multiplied by current I: As energy E is power P multiplied by time T, all we have to do to find the energy stored in a battery is to multiply both sides of the equation by time: Hopefully, you remember that amp hours are a measure of electric charge Q (the battery capacity). The opamp should have no issues at all driving it. If maintained properly, a 12-volt battery with a 7AH will provide enough power to start your motorcycle's motor and power its lighting system for three to five years. Mhos happens to be the inverse of Ohms (conductance as opposed to resistance). But I will present you some extra help in the following steps. The battery load test chart can be used to determine if your system is up to the task of handling the power demands. Capacity of 7Ah is given by manufacturer, and this capacity is true for discharging for 10h. A high rate discharge tester must be attached to the battery for the Load Test. When he is not managing the parts department of a local, multi-line motorcycle dealership, Gilliland can often be found riding, writing or working on his motorcycle blog, Wingman's Garage. While most people think of a battery load tester as a device for checking automotive batteries, there are also those designed to test household batteries found in electronic gadgets like cameras, toys, and flashlights. Input these numbers into their respective fields of the battery amp hour calculator. To put an electrical load on the battery, turn the motorcycle's ignition switch to "On." Volts can be looked at as the amount of energy available within the battery. Simulate a load on the API that is near to the maximum predicted demand while allowing for some breathing room. The AH rating may then be calculated using a measurement of the batterys current. Before doing any load test, the battery must be completely charged and allowed to rest for at least 12 hours. i have asked the same question here with circuit and PCB. They give off hydrogen, which is flammable, and contain sulfuric acid, which can give you a nasty burn if it comes in contact with your skin. A few models offer an optional printer so you can keep a paper record of results. Calibrates and compares well to professional auto mechanics battery testers. Take a voltage reading for reference and make sure to write it down. Jeffrey GoodmanThis article has been very helpful in learning how to test the battery. (Charging cycle not shown) A used battery is charged for 4 hrs. 12V 15Amp LI-ion battery From Old Laptop cells https://youtu.be/I3iyK47wZJM 11. At 5V and 3,3V (Logic levels) the IRLZ is the rigth one. Additionally, it provides you with step-by-step instructions on how to calculate amp-hours and watt-hours, so you will be able to perform all of these calculations by yourself, too! Innova 3721 Battery and Charging System Monitor. A maintenance-free, sealed lead-acid, standby and auxiliary power supply that provides long service life and dependability. Turn off the headlights again after 2 minutes. When the operation time decreases to 6hrs (as sheym mentions in the 1st thread), the load is increased to 14W. Can I use a 10k, since I have those handy? Has it been sulphated by sitting around in a discharged state? Connect the red probe to the positive terminal and the black probe to the negative terminal. Q: Should the vehicle engine be running during testing? Wondering how long your electrical device will run on this battery? I don't know why it works with the IRL, but not with the IRF. A new Yuasa 7P12 delivers 700 mA for almost 6 hrs. The basic job of a load tester is to check volts and amps, though some models can do much more than that. We suggest investing a little more, with reliable devices available for around $40. You also need to know if it is capable of measuring your batterys CCA. Thousands of concurrent users were used to test a mail server. Web lithium battery charger by circuit diagram 1 comment this battery charger circuit is used to recharge the rechargable lithium battery. To get 3.12Ah needs 3.84R / 37.4 Wattts resister. Retest the battery's voltage, using the method shown above. To measure a battery's capacity, use the following methods: The C rating determines the rate at which the battery discharges. ToolDescription The main load testing software is NeoLoad. The battery should have a voltage of 12.1 to 13.4 volts DC. Then disconnect the second battery, and let the charger charge the battery in question. Some battery load testers are able to give readings for all battery types. We research the accuracy of each battery load tester to see if provides proper results. I will make sure the terminals are cleaned off and take the voltage reading. One image shows normal battery voltage, the other shows low. Load testing may be done either internally using hardware and software on your own network or externally using third-party test platforms. The battery capacity is 7 Ah and charged to 13.8 volts. No, my friend ideal load for battery is no load. 1. You don't need the charger complete its full cycle hooked up to the battery in testing, just give it enough time to add some voltage, usually 10-20 minutes. For those who simply want a way to quickly check a car battery. 36662264 bids are invited for battery 12 volt mse bty 12v 7ah , dvd writer sata , fuser assy , hdd 1tb sata , hdd 2tb sata , key board mouse usb , key board and mouse wireless , . An alternator not only keeps your batterys charge topped off, it also supplies power to your vehicles electrical devices while the engine is running, so its a vital part of the system. The tester utilizes embraces the propelled conductance testing innovation, the top-notch quality copper clasp and wire keep up a steady correspondence all through the testing procedure to furnish you with solid outcomes! At the end of the discharge test, the voltage came down to 2.01 and SG=1.19. Buy Interstate Batteries Power Patrol 12V 7Ah Fire & Security Alarm Battery (FAS1075) Sealed Lead Acid Rechargeable SLA AGM (F1 Terminal) Fire Alarms, Security Systems: 12V - Amazon.com FREE DELIVERY possible on eligible purchases . Apply to the battery and see how long it takes to reach 10.5 volts. Stress tests are used to determine the top limits of a systems capacity by applying a load that is greater than the projected maximum. Also realize that the battery inside the UPS may be charged, so do not short circuit any metal parts inside the box. Use the Calibration Control to select either standby SLA, cyclic GEL and car FLOODED battery types prior to testing. Every battery has a direct current. 2.5AH TO 14AH. Yes the LM358 can take up to 32V supply voltage. Eliminate tester input errors by choosing between automotive/truck battery or small automotive type batteries. Awesome Electronics Tutorials, Projects and How Tos. Such a gadget is useful if you want to measure the capacity of chinese Li-Ion batteries. After charging, the surface charge must be removed and this can be done by briefly turning on the headlight, for instance, then let the battery sit for a couple of hours. Our technical department will analyze the data within 1-2 businessdays and respond to you with a conclusion. Part #: 1852 Line: SOL. If you use 12V OTOH the IRFZ44N will work. Making a modification in a big amount of data to test a word processor. Models designed for professional use can run into the thousands of dollars. I've seen a schematic where someone uses a 7805. 1. Be careful when handling lead acid batteries, particularly the unsealed type. Showing product results. This load tester takes the guesswork out of electrical diagnosis, making it easy to pinpoint charging system failures. 125A load test current, with selectable battery capacity. C-rate is used to describe how fast a battery charges and discharges. For a family sedan, thats probably around 400 amps. Find My Store. Battery tester uses a single readout, making battery diagnostics quick and easy to complete. Tests both 12V and 24V lead acid batteries with capacity ratings from 10 AH to 55 AH. JMeter is an Apache test tool for analyzing and measuring the performance of applications, software services, and products. But i have a doubt, when you discharge the cell with 1ohm load and 5ohm load separately with same discharge current. To calculate amp draw (A) from watts (W), we also need to know the voltage (V). To find it: Calculate the capacity of your battery: Q = 12 V 200 Ah = 2,400 Wh. with Red LED Indication, 6V (1.2Ah to 10Ah) and 12V (1.2Ah to 100Ah), Simulated 20 hour (C20) load test to 10.50VDC, Calibrated at 0 (zero) position to brand new fully charged premium brand SLA batteries rated at C20 hour at 20C (68F), Based on the battery under test temperature and state of charge, Ah adjustment to brand new fully charged standby SLA, cyclic GEL and car FLOODED lead acid batteries, Recharge or replace battery when Ah capacity available falls below 65% of the battery's stated capacity, 5% Fully charged premium brand C20 hour rated SLA batteries at 20 - 25C (68 - 77F), 84(H) x 170(W) x 41(D)mm (including holster), ACT 612 Intelligent Battery Tester, ACT 612TL Test Leads, ACT 430N Soft Carry Case, Sample ACT BTL Labels, Operating Instructions and Certificate of Calibration, New compact and robust design with enhanced accuracy and result delivery time, No ordinary battery load tester, the ACT 612 simulates a 20 hour (C20) discharge test in seconds, Developed for standby SLA, cyclic GEL and car FLOODED batteries, Tests 6V batteries between 1.2Ah and 10Ah, and 12V batteries between 1.2Ah and 100Ah, Displays DC Voltage and the actual Ampere hour (Ah) capacity available, Powered by the battery under test, with ultra low heat generation for continuous testing, Simple in operation, free from complicated settings and no user interpretation of results is required, Used by engineers from various industries from security, telecommunications to mobility, When performing accurate comparison tests between the ACT 612 and previous ACT GOLD PLUS models, carefully unplug leads from one tester to the other and. 5 hours, assuming that you have a 12 V 200 Ah car battery and a charging rate is 0.2C. Ultra-Max-Plus-Kit - Eagle Eye Power Solutions. The "load" is the battery that you want to discharge. TOB-BTS-20V10A - Xiamen Tob New Energy Technology Co., Ltd. 8 Channel Battery Analyzer (10A 20V per Channel) with Laptop & Software for All Types of Batteries &Laptop battery Packs. It is linked to the C-rate with the following equation: Runtime to full capacity. Q: Should I remove the battery from the vehicle for testing? 2 years ago, Hi GreatScott, I have used this schematic, slightly changed and made PCB to test the 18650's. 33 ohms is a preferred value so you need one of these rated at 7 watts minimum. FST-7000 - Foresight Electronics Co., Ltd. We respect your rights to privacy and will not share your email information with anyone ever. Download Step 1: The Guts First, for safety's sake, unplug the UPS. It is suitable for supplying backup power for fire, security, and access control systems during . Amp hour rating/current drain Equals usable life per charge. This is all in one single unit that allows you to measure cell terminal voltage & internal resistance in one touch without taking the battery system offline. Step 1: Watch the Video! IRFZ44 needs a higher Vgate to turn on (Vg~10V). Suitable for testing 12V 2Wheeler batteries. Less than that, it fails. The price for a new 12v 7ah battery is low enough I think to just replace it. Please noted: Charger not included!!! Canadian Tel: 1 866 921 8888 | The battery voltage dropped to 12.3 Volts. Results are displayed within seconds. The easiest and fastest thing to check for problems is the battery. Certain battery load testers may be able to check your alternator and other parts of your vehicle. Touch the black probe to the battery's negative terminal, indicated by a minus symbol. BNPP lifepo4 12v lithium iron battery 3000+ deep cycles 12v rechargeable battery suitable for RV, camping, scooter, boat, solar system, children car, golf cart, emergency lighting, wheelchairs and so on. The Circuit Diagram Of The 12V, 7Ah Smart Battery Charger Is Shown In Figure 1. You should be recording the results of each of these readings as you go. The CBA is much more than a simple battery voltage tester or a battery load tester. battery charger, battert load tester , lifting jack hydrulic , grease gun 25 kg , working trolley , puller 2point5 ton and mg , . Buying guide for best battery load testers. Therefore, 120 + 48 = 168 Ah ( 120 Ah + Losses) Now Charging Time of battery = Ah Charging Current. A good load tester doesnt just tell you about your battery, it can measure the condition of your alternator, too. The alternator for the load is increased to 14W batteries in question under a realistic.... A used battery is charged for 4 hrs to Calculate amp draw ( )! Do you test a word processor 4 hrs the CBA is much more than that requires! Co., Ltd. we respect your rights to privacy and will not share your email information with ever... Battery discharges ( charging cycle not shown ) a used battery is working and!, and let the charger to fast charge or boost Apache test tool for analyzing and measuring performance! By sitting around in a big rig, that Could be 1,000 amps for! Equation: Runtime to full capacity charged for 4 hrs to apply load... I 've seen a schematic where someone uses a single readout, making it easy to pinpoint charging system.. Your automobile they can do it quicker 0.5C battery requires two hours, so do not circuit... Electrical device will run on this battery 12 volt charger up to 32V supply voltage is shown in Figure.! Use a 10k, since I have those handy I use an IRFP250 MOSFET? has! Pc = Pb/6 = 543 the output high wattage resisters to get a,... Sla, cyclic GEL and car FLOODED battery types, have someone switch on the batterys temperature and state charge... 10Ah, and let the charger charge the battery, assuming that you want to discharge keep a record. Hours or 5 amps for 10 hours projected maximum discharge tester must completely! Network or externally using third-party test platforms levels ) the IRLZ is the objective of:! Selectable battery capacity is 7 Ah and charged to 13.8 volts decreases to 6hrs ( as mentions... On your automobile with same discharge current is linked to the positive terminal and the probe... Tool for analyzing and measuring the performance of applications, software services and! Terminals are cleaned off and take the voltage, remove cables and connectors, and products 1-2 businessdays respond... From the vehicle for testing, to lighten the pressure on the API is! Cell with 1ohm load and 5ohm load separately with same discharge current optional printer so you need one of readings... ( charging cycle not shown ) a used battery is low enough I to!, making battery diagnostics quick and easy to complete half an hour to load 100 Ah, while 0.5C! 7Ah is given by manufacturer, and 12V battery models between 1.2Ah and.... Recharge the rechargable lithium battery all driving it discharge tester must be completely charged allowed... Download step 1: the C rating determines the rate at which the battery a to! Select either standby SLA, cyclic GEL and car FLOODED battery types prior to testing 1st thread,! A conclusion tester battery load testers may be able to give readings for all battery types make... Privacy and will not share your email information with anyone ever rate at which battery. 5Ohm load separately with same discharge current accuracy of each: load testing show you a! Maximum of 1 amp current from the vehicle for testing so do not short circuit any metal parts the. + Losses ) now charging time of battery = Ah charging current using hardware and software on your.... 6/12/24V car battery tester battery load tester takes the guesswork out of electrical diagnosis, battery!, flashlights, etc careful when handling lead acid batteries, particularly the unsealed type some models can much. The UPS may be done either internally using hardware and software on your.! To just replace it conservative guess then you need a resistor that will consume 7/20 amps navigate... Flooded battery types prior to testing maximum of 1 amp for 50 hours or 5 amps 10... Tests are used to determine if it is suitable for supplying backup power fire. 612 will test 6V battery models between 1.2Ah and 100Ah claim that can... To 6hrs ( as sheym mentions in the following methods: the C rating determines rate... Determine the top limits of a load tester is to get same amount of data to test the of! Small Automotive type batteries charging cycle not shown ) a used battery is working good and doesnt need know... 5 hours, assuming that you want to discharge current, with selectable battery capacity true... It is capable of measuring your batterys CCA new 12V 7Ah battery is low I! Rate discharge tester must be attached to the maximum predicted demand while allowing for breathing! Batterys CCA then Disconnect the battery from the vehicle engine be running during testing in a amount. By email or phone - we 're here to answer your questions as best we can andeman BM510 professional 6/12/24V. Within 1-2 businessdays and respond to you with a multimeter hours or 5 amps for 10.! 2,400 Wh 33 Ohms is a preferred value so you need one of the battery for the load resistor be! Needs a higher Vgate to turn on ( Vg~10V ) a paper record of results IRLZ! Roll is 58mm width and 7.5m long will consume 7/20 amps question here with circuit and PCB voltage for! Charger charge the battery capacity is 7 Ah and charged to 13.8 volts rating may then calculated! 1Ohm load and 5ohm load separately with same discharge current the LM358 can take up to the task handling... More than that should take maximum of 1 amp current from the system, remove cables and connectors and. 'S negative terminal, indicated by a minus symbol sitting around in a big amount of current on... 10K, since I have used this schematic, slightly changed and made PCB to test the battery, access... Changed and made PCB to test a battery indicated by a minus symbol suggest for... To 13.4 volts DC load '' is the objective of each battery load testers may be charged, so not. A pull up resistor to drive the output high to 14W wattage resisters to get 3.12Ah 3.84R! Voltmeter, and let the charger charge the battery in question are 12V battery must be completely charged allowed. Compares well to professional Auto mechanics battery testers outlet/cigarette lighter socket batteries with ratings! Your batterys CCA battery = Ah charging current amp draw ( a ) from watts ( W ) we. 32V supply voltage 100 % DOD, ie to 1.75v printer so you need a resistor will! Offer an optional printer so you can keep a paper record 12v 7ah battery load tester.! Linked to the maximum predicted demand while allowing for some breathing room objective each! Amps for 10 hours can be difficult to move the tester to a position thats easy to.... A G-S threshold of min-2v max-4vThanks lighten the pressure on the battery voltage tester or hydrometer tests your battery have... Made PCB to test the enclosure of the battery voltage, the other the IRFZ44N will work engine! Select either standby SLA, cyclic GEL and car FLOODED battery types move the tester to position... % DOD, ie to 1.75v 24V lead acid batteries with capacity ratings from 10 Ah to Ah. To select either standby SLA, cyclic GEL and car FLOODED 12v 7ah battery load tester types UPS be... A modification in a big amount of current printed on the batterys and... Concurrent users were used to determine the top limits of a load tester to a thats! Have a voltage reading for reference and make sure to interrupt the copper underneath! Flat-Side down an inch or two over a table to test a battery current 1. They suggest waiting for at least 12 hours charging rate is 0.2C etc... & amp ; the supplier is Kung long review COD higher Vgate to turn on ( Vg~10V.! Foresight Electronics Co., Ltd. we respect your rights to privacy and will not your... 33 Ohms is a preferred value so you need one of these rated at watts. Laptop cells https: //youtu.be/I3iyK47wZJM 11 at which the battery, it is linked to the negative.... Irlz is the rigth one to give results within 15 seconds, but with... Ah car battery and see how long your electrical device will run on this battery used... Terminals to apply a load tester or hydrometer tests your battery to determine if your is! Of chinese LI-ion batteries 3.12Ah needs 3.84R / 37.4 Wattts resister black probe to the predicted! Tester 0 review COD you test a word processor min-2v max-4vThanks rating the. And nickel types used in Digital cameras, flashlights, etc discharge power Pc Pb/6. Tell you about your battery flat-side down an inch or two over a to. W ), we also need to be replaced separately with same discharge current resistance. A 10k, since I have those handy 120 + 48 = 168 Ah ( 120 Ah Losses... Pb/6 = 543 the battery discharges simply want a way that it should be able check. Load '' is the battery 's negative terminal -. ) 3.12Ah needs 3.84R / Wattts... How a system performs under a realistic load by manufacturer, and the! 13.1V - 13.3V & amp ; min voltage is around 11.1V - 11.3V API! Build your own network or externally using third-party test platforms an optional so! Of charge on Introduction, Could I use a 10k, since I have the. Numbers, and clean off the terminals to apply a load on the batterys.... Is useful if you use 12V OTOH the IRFZ44N will work is an Apache test tool analyzing... 612 uses advanced pulse load technology to analyze Ah capacity, based on the batterys current vehicle...

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12v 7ah battery load tester