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I say disconnect-reconnect, I removed all screws and all connections. Then reconnect them, just to ensure that there will be no loose connection. 1. Blue wire to the batteries and Black wire to your load? Yes. 2. Are all loads disconnected? Yes. I have a DC circuit breaker between battery and...

I got this 48v 100A discharge/50A charge DALY Smart BMS. Today I experienced for the 2nd time ghost current while charging my cells using solar charger. (Battery is only in charging mode). I say ghost current, because charge current is only 20A-30A (based on clampmeter and based on LED of...

Hi, is this from Dongguan lightning? I purchased Lishen 272ah recently, but price is bit higher - $72 per cell

Sorry I didn't get your question. No, I did not take the IR reading. It was only from the video they sent me. Could you recommend an IR tester? (I noticed that my UNI-T has ohm symbol, can I use that instead?) Okay understood. :) New idea to me, I guess if I have an active balancer, no need to...

Is this okay? I thought it's bad to keep them at high SOC?

I see. That is not the case. the busbars are fully clamped and washers are already added. But this is are the default settings. Why would it be possible to undo the top balancing? Actually, I have purchased an active balancer and just waiting for it to arrive. Based on Will's video, it might...

I am using the busbars and bolts that came with the batteries. They are well tightened. What do you mean by "not bottoming out"? BMS reading is consistent with the reading of my voltmeter. Thought this might be the issue previously, but the reading from BMS is the same with the voltmeter...

Around 90dollars per cell. I was told by the supplier that these are "matched" cells. But I've just read what you guys posted and I think these are not really "matched". I tried to capacity test, but BMS hit low cut-off voltage too early because of 2 "runner" cells. Then I tried to...

Hello everyone. I bought matching EVE cells from Dongguan lightning, performed top balancing, and arranged them in 16S configuration (48v 280ah). When the charging/discharging current is above 20amps, I observe 0.20v difference between the maximum volt and minimum volt, which triggers my...

Finally, I'm done with top balancing my cells. I stopped when the voltage reading across battery terminals hit 3.60. I didn't wait for amps to drop to 0. I'm good. Thanks everyone!

"The only thing I will add is to make sure you set the voltage on your power supply to 3.40 volts before connecting it to the cells. Some have ended up with bloated cells because they connected the power supply to the cells and then set the voltage. Not sure if you were aware of that." I will...

Hi, thank you for the wonderful explanation! I will set voltage to 3.40V for now, and I will observe if powersupply will switch from CC to CV mode after some time. I don't have DC multimeter/clampmeter right now cause I originally planned to just use the Voltage and Current reading from the...

I bought R-SPS3020 30V 20A. My power supply switches automatically between CC and CV mode, but I can't control it. How am I supposed to top balance my lifepo4 batteries with this power supply? Initially, I set the voltage to 3.60V (mode is CV). But when I connect to the batteries, the mode...

I wished I just bought this instead of R-SPS3020 30V 20A. My power supply has automatic switching between CC and CV mode, which I can't control. How am I supposed to top balance my lifepo4 batteries with this power supply? Initially, I set the voltage to 3.60V (mode is CV). But when I connect to...

Any update on this? Is this a hybrid offgrid inverter?

Hello, I just recently purchased 20pcs 3.2V280AH EVE batteries from Dongguan lighting energy technology co. ltd. Contact person was Mr. James Mo. I'm happy with his service. He addressed all my questions and concerns. For grade A, brand new cells, I think this is a great deal. I'm so excited...