I have a 12s 5p lifepo4 pack.
I charge through this bms http://www.aliexpress.com/snapshot/6290240442.html?orderId=64171138909262
The charger is http://www.aliexpress.com/snapshot/6486119718.html?orderId=65738565059262 it has 43.1 volts at the pin by my multimeter.
When the batteries get to 3.3...