SunnyNorth
New Member
My first post, so a big thanks for those in this forum. Been reading for some time and watching a lot of Will's videos which have been very helpful. Now I have a question which I cannot find much about. I recently upgraded my batteries at my cabin to Lifepo4 and started using the Li settings on my Renogy 40a MPPT charge controller. Batteries are placed in an insulated basement that has never gone below 2 degrees Celcius. I am confused to why Renogy would set the return voltage to 13.2v. Most charts show 13.2v on a lifepo4 battery to be 70% full??? In the few weeks I have been using that setting I have noticed it will go into boost everyday and stay there most of the day it seems. Boost is set to 14.4v which seems rather high considering full voltage is around 13.4v-13.6v. I have 4 Chins 100ah batteries in parallel hooked up to a 2000w inverter so I am considering using USER settings on the controller to bring that voltage up to around 13.4v to get to a full battery. Found online others using user settings using the Epever controller as follows:
Over voltage disconnect 14.8v
charge limit 14.6v
over voltage reconnect 14.6v
equalize 14.2v
boost 14.2v
float 13.6v
boost rec 13.2v
low volt rec 12.8v
under volt rect 12.2v
under volt warn 12.0v
low volt disc 11.1v
discharge limit 11.0v
equalize time 0min
boost time 60min
Does these sound reasonable so as not to damage my batteries? Any concerns of any settings please comment.
Over voltage disconnect 14.8v
charge limit 14.6v
over voltage reconnect 14.6v
equalize 14.2v
boost 14.2v
float 13.6v
boost rec 13.2v
low volt rec 12.8v
under volt rect 12.2v
under volt warn 12.0v
low volt disc 11.1v
discharge limit 11.0v
equalize time 0min
boost time 60min
Does these sound reasonable so as not to damage my batteries? Any concerns of any settings please comment.