Lithium batteries
Hi all, Quick question. I have asked some of the sellers, but have not gotten a response. My question is can you mix battery amperage 100 amps with a 200 amp battery? Thanks Lee
Forum Discussion
In parallel and same voltage (IE both 12V) yes, not an immediate issue per se.
Not an expert on LiFePO4 batteries, but the long term issue of connecting batteries of different capacities or different age is that they will discharge and recharge at different rates. Yes they will always seek to equalize to the same SOC % when being drawn upon or unused, but when charging, I believe you are potentially or realistically over charging the smaller or older battery while charging.
That said, I've seen and used alot of mis matched batteries in parallel operations. Does it work? Yup, just fine. Is it shortening the life of one or more of the batteries prematurely? Probably
But I can say with matched batteries, hooked in parallel only for charging, but separated for loads (boat, house and start batteries) with a single bank charger and decidedly different loads, those batteries have lasted as long or longer than they should. But they're only used around 20 days a year.
Not an expert on LiFePO4 batteries, but the long term issue of connecting batteries of different capacities or different age is that they will discharge and recharge at different rates. Yes they will always seek to equalize to the same SOC % when being drawn upon or unused, but when charging, I believe you are potentially or realistically over charging the smaller or older battery while charging.
That said, I've seen and used alot of mis matched batteries in parallel operations. Does it work? Yup, just fine. Is it shortening the life of one or more of the batteries prematurely? Probably
But I can say with matched batteries, hooked in parallel only for charging, but separated for loads (boat, house and start batteries) with a single bank charger and decidedly different loads, those batteries have lasted as long or longer than they should. But they're only used around 20 days a year.
