Got a problem with my EB3A, after a few month of usage (bad power, undervoltage etc) it started turning off after discharge, like completely turning off and not charging when connected to the socket. I figured out it can be brought back by giving it 12V, after that it accepts power from wall socket and starts charging, but it shows battery charge at 90% from start. It still takes correct time to fully charge, and it bears load correctly.
Any suggestions or do I need to search for repairs?
Try completely draining to 0 percent followed immediately by charging to 100% via slow charge. Repeat this process twice and see if the situation is resolved.
@arcade And to add to what Scott mentioned above… when you’re charging it up to 100%… leave it plugged (also make sure nothing is plugged into the outputs and that they are all “off”) after the unit displays 100% until you see the input wattage drop to 0 watts coming in. Sometimes the BMS needs to be re-calibrated from time to time and by leaving it plugged into the charging source, it will eventually top-balance. But its important to let the unit keep charging until it doesnt allow any more incoming wattage to come in.
Yeah, thought about that too and already attempted to calibrate 3 times:
Connecting only one steady drain ~100W.
Disconnecting everything (starting via 12V if needed) and charging to 100%.
Repeating cycle.
Well, now it is able to start from AC power. On the other hand I now have a Voltage regulator. ALAS, place I’m working doesn’t smell like civilization - voltage jumps from 230 to 170 depending on load, blackouts are quite common. I actually used EcoFlow + voltage regulator last time to keep it charging steadily.
I’ll try draining it one more time after EcoFlow calibration would be complete.
I also have this problem, if charging with solar, once the battery reaches 100% , it goes off and on, is there a fix for this? Tried above it didn’t work
I have the same problem. When the charging station is constantly connected to power, it periodically begins to make noise/charge, but it is already 100% charged. At the same time, eb3a can stand idle for half a year with the power turned off and not discharge (after half a year it shows 100%).
It is a major design flaw. It seems like a LOT of people experience this. It does not look like any update is going to fix this issue that has to do with balancing the charge on cells. I’ve dealt with this multiple times, and capacity is fine, but it does not seem the charging system smart enough to not brick the entire thing, which is what it has done in my case.
Ok, update — I lost my hands on that piece of hardware. Brick from EB240 didn’t help as it has different parameters and is not suitable for charging EB3A.
On the other hand I don’t think this is some kind of design flow, probably some problem with a battery that requires more then meager electronics we have in this model to properly detect and diagnose, and better electronics will make the check grow considerably. Anyways, the piece served us more then half a year in a quite harsh environment — daily blackouts, unstable current, unstable weather conditions and so on. So yeah, I was happy with it.