Effect of no absorption on LiFePo4?
I bought a low end 100Ah LiFePo4 a couple of years ago. The manufacturer only listed charge and float voltages on their spec sheet. Later I asked them about absorption and they told me 14.4v. They ...
Forum Discussion
bdosborn wrote:
Some LiFePo4 batteries recommend an absorption stage, it gives the BMS cell balancer time to work. The voltage region that most BMS balancers work in is so high on the charge curve that actual balancing might only last a minute or two. Here's what Battleborn recommends:
https://battlebornbatteries.com/programming-a-victron-smartsolar-charge-controller/
Bruce
Thanks for the BattleBorn link.
I have 5 206ah SOK batteries, (not sure what SOK recommends) but it would be nearly impossible for me to hold absorption for 10 hours (via solar charging) for my 1030 ah of batteries. What I do is set absorption to 14.2 volts for 20 minutes. I also set equalization to a schedule of once every 30 days at 14.4 volts.
Before anyone tells me I am shortening the life of my LFPs, the batteries are not quite one year old and I am 75 years old, so I think the batteries will outlast me no matter how I charge them.
