Upgrade battery bank

[rmosborn]

I would like to upgrade my current battery bank. I have 12 lead acid golf cart batteries wired in series and parallel. 8 volt batteries creating 2 sets of 48 volts. Lithium has been coming down and I have seen buy one get one on batteries. My inverter and charge controller will support lithium. I see batteries that are 48 volts 50 amp hour, 24 volt 100 amp hour and 12 volt 200 amp hour.
What would you suggest for two 48 volts sets in parallel?

Thanks

 

[SamDeleted]

I see batteries that are 48 volts 50 amp hour, 24 volt 100 amp hour and 12 volt 200 amp hour.

48v x 50ah = 2,400wh
24v x 100ah = 2,400wh
12v x 200ah = 2,400wh

So no big difference there ?


Unlike lead acid, generally people don't wire pre-build lithium batteries in series , only parallel . So you need to buy your intended voltage eg 48v

 

[rmosborn]

Thank you .

 

[Steve_S]

Your at the start so please... DO NOT Bodge the battery bank it will only cause blue air & hair pulling.
Stay Native Voltage, so for a 48V system use ONLY 48V battery packs.
The LFP can be used from 100% - 0% SOC without harm.

 

[hwy17]

Sounds like you've got 300-400ah of lead acid right now.

So consider 2x 48v 100ah at a minimum, or one big one like the EG4 Power Pro.

 

[Benjamin Yang]

If you don't need a large capacity, you can choose 48V50AH, expand the capacity and connect them in parallel.