Recent content by ericgrand

Sorry, I need both. And I'm in France...

I have ordered the following con nectors. They are working perfectly: https://www.aliexpress.com/item/1005001528775851.html?spm=a2g0o.order_list.0.0.21ef1802rGvs1J

I'm using enphase M215 micro inverters with 6 Valence U27-12XP batteries (2S-3P) and the inverter are connecting and produce max possible power without any problem. The current is automatically adjusted to match the decreasing voltage. I use this to store excess daily production and use it to...

Do you start the software in admin mode?

Batteries exposure is not the only concern to me on the first picture. You can clearly see a red wire without protection chaffing against the frame...which is connected to ground. As it does not seem there is any fuse after the battery, it is a problem to come!

I have purchased the same type of power supply than the OP, but in 24V. It is basically 2 server PS connected in serie, one without current limitation, adjusted to 15V, and the other one being adjustable both in voltage and current. Components in the regulator box are blanked/scratched, so no...

jump directly to a 16S pack...it will be quicker to highlight runners and bad cells...You maybe very surprised that none of cells will have been damaged...If none of them was at 0V, I would bet they are all in good condition!

That's a huge number of cells! Testing them one by one will be tricky! I would simply charge them up to 3.65V and connect them 16 by 16 to built a 48V battery, with a BMS. Then running a load like an inverter, I would check if there is any runner on the pack and replace it. It all depends what...

In the Valence battery manual, they say than when the battery display a red flashing light, the OEM should be contacted to assess if battery can be recovered or not...except for undervoltage. It is described that if the battery reach 2.3V per cell in less than a minute at 0.5A, then the alarm...

To be honest, I just connect a 5A power supply initially and the battery quickly jump above 2.5V/cell...but I learn after that I should have charge initially at less than 0.5A, which I did for the other batteries. They are all behaving the same.

From experience, it seems recovered cells are just behaving as if nothing happen... I had Valence U27-12XP batteries that were below 2V (4 cells serie...) that just recovered and behave perfectly: full capacity. They may have lost few cycles, but given the price paid, who cares!

Sounds normal to me...

That means your power supply is not properly set...Amp should decrease significantly when cells reach 3.6X. Also, with cells in parallel, reading such a diffecence between cells is not consistent. Stop your charger immediately and check wiring and charger voltage: 3.65 without any load connected!

I think that if each bank can for any reason power both inverters at full charge (maintenance or one fuse already blown), then each fuse should be able to sustain the load of almost 500A. I would use fuse close to 1C rate for each bank, so 560A

If you don't want to provide the required details, then there is no way to help you...