Battery Question

[kfulmer]

I have 4 100ah Lifpo batteries. They are currently hooked up in 2S2P for 24 volts/200ah.

I have acquired 2 additional batteries, 12volt 200ah each (so basically like 2 12volts in one). Can i wire these 2 new batteries in series for 24v/200ah then add them in parallel to the other bank?

 

[timselectric]

I have 4 100ah Lifpo batteries. They are currently hooked up in 2S2P for 24 volts/200ah.

I have acquired 2 additional batteries, 12volt 200ah each (so basically like 2 12volts in one). Can i wire these 2 new batteries in series for 24v/200ah then add them in parallel to the other bank?

Yes, just make sure to protect them separately. (Fuse or breaker)

 

[kfulmer]

Yes, just make sure to protect them separately. (Fuse or breaker)

What fuse would you recommend? I have a 100amp inline handy.

 

[timselectric]

Most people would recommend a class T fuse.
But, if you think that that fuse would handle the expected loads. It would be better than nothing.

 

[kfulmer]

Most people would recommend a class T fuse.
But, if you think that that fuse would handle the expected loads. It would be better than nothing.

its an ANL fuse. I should have been more specific

 

[timselectric]

its an ANL fuse. I should have been more specific

I would be ok with that. Others would recommend a class T.

 

[Lt.Dan]

Lifepo4 batteries have the capability to discharge 10,000(?) amps when shorted, an ANL fuse can only interrupt about 2700 amps and will not suffice IMO. A typical Class T fuse is capable of interrupting 20,000 amps.