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Just bought attached battery capacity/load tester. However, just noticed that it says:

• Two power supply methods: 1. DC6-12V DC5.0 power supply; 2. DC6-12V Micro USB power supply.The body discharge power cannot exceed 150W, otherwise there is a risk of burnout.

I bought one of those too, a while back.

It will NOT do what I understand you're wanting to do with it.? More specially, it will work, but it will take waaaaay too long per cell.

Email me directly if you want specifics on how I individually capacity tested my pack of 16 EVE 280ah battery cells.

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Hi Thomas,? I absolutely would be very interested in the specifics. Unfortunately, don't know your email address and can't find you in the "Directory". Can you reply with your email address, or, here is mine (pqknowlton@...) and you can send it directly to me. Thanks so much. Peter?

Peter,

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I send you a longer reply directly. ?Don't know why you can't find me, 'cause I've been mostly lurking here for years.

My short answer is that the little, inexpensive device will work, even at 150 watts, but with that, the discharge rate is *much* lower than the EVE-specified standard test discharge rate of 1/2 C. ?Testing each cell will end up taking nearly 7 hours with your device, so you'll need a lot of patience.

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I used devices and software from WestMountinRadio.com that enabled me to test at 1/2C and give me a cool chart for each cell showing the discharge profile. ?It's remarkable how long LiFePO4 cells sit at right around 3.3v to 3.2v while discharging, showing steep drops at the start and end of the discharge cycle.

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Best of luck with your project!

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