mixing battery groups

[hrtbrk1 5,000+ posts]

hey is it bad to mix battery groups?

Click to read more...

 

[jco1385 5,000+ posts]

like g31 and g34?

i have them and they work together just fine.

or do you mean sealed VS not sealed

 

[hrtbrk1 5,000+ posts]

both

 

[jco1385 5,000+ posts]

i don't know the science... but it's recommended not to do non-sealed with sealed.

 

[hrtbrk1 5,000+ posts]

ok thanks

 

[jdawg 5,000+ posts]

I wouldnt, stick to the same type, even if its a reg batt up front and a deep cycle in the back, people run into problems with the deep cycle draining the front battery

 

[hrtbrk1 5,000+ posts]

i have a optima g31...what batts are good with this?

 

[jco1385 5,000+ posts]

i would go with another sealed battery (i.e. red top, kinetik, PM, orbital...)

 

[jdawg 5,000+ posts]

right any other sealed should be fine, i like to keep brands the same myself but you should be ok

 

[audiolife 5,000+ posts]

the ideal would be to use the same size and type

 

[hrtbrk1 5,000+ posts]

ok thanks...im thinking of using the g31 as the front battery and hopefully some pm or kinetiks in the back

 

[gotparts90 10+ year member]

the ideal would be to use the same size and type

the engineers at johnson controls i used to work with had the same answer. You need the same batts down to lot number if you truly want the batts connected together to act as one. That would give you the longest life of the entire set otherwise put in a big relay to separate them when they are off of charging.

 

[jco1385 5,000+ posts]

what car are you gonna fit a g31 under the hood?

 

[hrtbrk1 5,000+ posts]

jeep grand cherokee

 

[hrtbrk1 5,000+ posts]

the engineers at johnson controls i used to work with had the same answer. You need the same batts down to lot number if you truly want the batts connected together to act as one. That would give you the longest life of the entire set otherwise put in a big relay to separate them when they are off of charging.

can you elaborate more on this?