rdanneskjold
New Member
- Joined
- Jun 13, 2021
- Messages
- 7
I read somewhere that charging the last 10-15% of a battery causes it to expire earlier than they otherwise would. IOW, charging a 3.8v battery to 3.4v greatly extendes the battery's number of charge cycles.
First, is this true? yes, you give up significant capacity, but your battery will last a lot longer.
As i understand it, you can control state-of-charge settings in some controllers to do this, i.e., tell it to what voltage to charge to. my battery is going to be 12 x 4 12v AGM deep-cycle. what if I put 5 batteries in series instead? then each would only ever see 9.8v.
background: planning to go off-grid with solar, battery bank, and backup generator. NOT for economy, but for security and peace of mind. and because I am an irredeemable geek.
Thoughts?
First, is this true? yes, you give up significant capacity, but your battery will last a lot longer.
As i understand it, you can control state-of-charge settings in some controllers to do this, i.e., tell it to what voltage to charge to. my battery is going to be 12 x 4 12v AGM deep-cycle. what if I put 5 batteries in series instead? then each would only ever see 9.8v.
background: planning to go off-grid with solar, battery bank, and backup generator. NOT for economy, but for security and peace of mind. and because I am an irredeemable geek.
Thoughts?