Recent content by dpappyp

I use both solar-assistant and watchpower. Everything has been working fine for awhile, but now the data feed has significantly been reduced to both apps. I’m only getting the basics like solar power, load power, and battery voltage. In watchpower the little bubble and icons are all grayed...

Thanks for input, Samcat. My inverter settings were more conservative than the BMS (goal being to have the battery capture solar energy when the loads didn’t fully utilize the available solar, but still have available capacity in a power outage and extend life). Back to grid was set at max...

Bad BMS, hooked up my old one again.

Sorry, I meant that the cell with the differing voltage happening to be right at the positive end of the bank meant anything.

Old BMS performing fine, but when the battery was charges up there was one cell off from the others. All cells were at 3.30-3.32 volts while one was at 3.60. It was the first one in line connected as the positive, not sure if that means anything.

Update: I reset the BMS and the inverter showed it was charging again, but only at less than 1 amp (battery at 52.6 volts or so). So, I decided to try to discharge the battery first before charging back up. I disconnected the grid and solar so it was battery only and turned on the furnace...

Thanks for the suggestion, I'll give it a shot.

Good question, I did not have access to the BMS at the time to check individual cell voltages. I wasn't home when it charged up, leveled off, and then started discharging. Sounds like I need to try charging it up again when I can be there and get a reading on the cell voltages, thanks for the...

Is there a good "how to" for determining a bad cell(s)? Is there more to it than just the resistance? Thanks for the suggestion.

The BMS performed the top balance and the cells have all been in alignment since.

I originally started using the battery without balancing since the cells were of a similar voltage when I got them (I know, I should have top balanced to start). I observed, however, that the voltages started deviating. So, with the current state that they were at I connected them in parallel...

The balance was at 3.35V at 0 current before connecting back to series. When charging from there the voltages did stray, but then the BMS performed a top balance and the voltages have been consistent ever since. No, the BMS has "Status information 0". For reference, I'm using the Daly...

I have a new LV6548 system installed with a 48V 150AH battery that I built from 16 cells from batteryevo. They were listed as refurbished with a 3 year warranty. They arrived at pretty much the same voltage so I did not do a balance. After seeing the voltages deviate from each other during...

I can’t believe I didn’t think to check the voltage at the inverter. You were right LtDan. The power plug I’m using is sucking up the missing voltage. I might just have to eliminate the easy disconnect.

Is there anyway to recalibrate the LV6548’s voltmeter? The inverter thinks the battery is at 49.6v, but it’s actually around 52.5v (confirmed with my handheld meter and the bluetooth BMS. So it’s way off.