Can i use both positive terminals on a pair of parallel batteries ?

[Bravo30]

i have 2 x 125ah Lifepo4 batteries in parallel. as it stands now i have a 2/0 inverter cable and my Redarc DC/DC charger on one of the positive terminal and a 6awg cable for the DC fuse panel on the other. should all of my positive connections be on the same terminal ? im in the process of setting up my BMS and control panel and want to make sure everything is being read correctly...

thanks, Brad

 

[Hillbilly Heaven]

It would be better if they were all on the same positive terminal. Also anything that connects to negative should go to the other battery. This will balance the current draw between batteries. Although your batteries maybe close and the cables between them short, they do have resistance. Even with low resistance and high current draw will cause an imbalance in the batteries if you don't have the same distance of current travel.

 

[john61ct]

No all charge sources, loads and meters should ultimately come off the same posts, opposite batts.

Those within the bank are only for that.

http://www.smartgauge.co.uk/batt_con.html

 

[Bravo30]

It would be better if they were all on the same positive terminal. Also anything that connects to negative should go to the other battery. This will balance the current draw between batteries. Although your batteries maybe close and the cables between them short, they do have resistance. Even with low resistance and high current draw will cause an imbalance in the batteries if you don't have the same distance of current travel.

ok, i just looked at my setup and i would need to move the 6 awg Fuse panel cable over to the other battery. the ground is already where it should be.

 

[Skeptic]

http://www.smartgauge.co.uk/batt_con.html

Interesting reading.

 

[Bravo30]

Interesting reading.

just when you think your asking a simple question !

 

[john61ct]

http://www.smartgauge.co.uk/batt_con.html

Interesting reading.

That you Brad75?

 

[Bravo30]

That you Brad75?

sprinter source? yes. i was wondering where i recognized that screen name from.

 

[FlipperFla]

i have 2 x 125ah Lifepo4 batteries in parallel. as it stands now i have a 2/0 inverter cable and my Redarc DC/DC charger on one of the positive terminal and a 6awg cable for the DC fuse panel on the other. should all of my positive connections be on the same terminal ? im in the process of setting up my BMS and control panel and want to make sure everything is being read correctly...

thanks, Brad

if the batteries are paralleled with 2/0 it will not matter if they are side by side