Thank you all I have an APC 1500BS (not sure, at work). It was the largest I could find at the time from Newegg that was not a rack mount unit. It has room for a 7s9p pack. My problem stems from 27V charging my batteries led to the first cell at 2V and the other 6 from 3.8 to 4.0.
I'm probably not asking this correctly, but how would I go about making sure each cell pack in a 7s configuration is bottom balanced? Right now, the 1500W APC UPS I am trying to use has a float charge voltage of 27V, making it practically impossible to balance. Any ideas?
Thanks to everyone!
Reverted back to a 3s80p brick for a 12V inverter. 4x4 grid of 20 cell holders (20 columns 16 rows)to allow for 2 empty rows between each pack of 80. Found a solar controller that will operate at both 12 and 24V. It's capable of threshold adjustments for the battery and charging voltages. I...
I received a '96 model Liebert UPStation S. This is capable of 3.6kW and is a beast!
It looks as if it was wired directly from the supply AC to a breaker panel, and the old batteries looked to be in a 24V setup.
Will this, in theory, operate similar to a normal battery/inverter setup? Battery...
I guess I will settle camp here. This is intended for (mostly from me) questions and (hopefully from all of you) answers regarding my power-bricks. The chosen name of a 'power-pit' is mostly inspired by brick, wood burningpit-grills and pork fat.
I am currently at 3s60p 18650'sto power a...