Multiple Batteries in Parallel

time2roll wrote:

Mont G&J wrote:
What Boon Docker quotes from the battery experts is correct. Follow his advice, it is based on fact.

OK and why not use these up and burn them out? Not perfect but I would still use them until they fail to function. I think they will last longer than some expect.

If spending money... get matched batteries.

I agree with the last statement.

Mont G&J wrote:
What Boon Docker quotes from the battery experts is correct. Follow his advice, it is based on fact.

OK and why not use these up and burn them out? Not perfect but I would still use them until they fail to function. I think they will last longer than some expect.

If spending money... get matched batteries.

Mont G&J wrote:
What Boon Docker quotes from the battery experts is correct. Follow his advice, it is based on fact.

Well well, here we have another battery expert to back up the other supposedly battery expert,....that never even gave a link to its source.
Before you start giving expert advice, why don't you just do it first before you tell others whats right ! If you had any experience doing it, you would know that paralleling different capacity battery works just fine. But you would need a volt meter,.....just so you know !
Each battery has a built in regulator,.....its called voltage, or SOC, which is what keeps its SOC the same as any other batteries that are paralleled to it, whether charging or discharging. So, just believe it,..... until you prove differently thru EXPERIENCE, being as your fact is wrong !

Mont G&J wrote:
What Boon Docker quotes from the battery experts is correct. Follow his advice, it is based on fact.

I plan to disconnect them to charge them and only have them connected together for usage. I will be using a trickle charger and a generator to charge them.

What Boon Docker quotes from the battery experts is correct. Follow his advice, it is based on fact.

BFL13 wrote:

swimmer_spe wrote:

BFL13 wrote:
I think it all depends on what you are going to run with them in parallel. I am only familiar with paralleling different capacity size house batteries for RV deep cycle use.

Somebody who knows about starting batteries and your intended use needed here!

All it is for it to run some lights. Basically, I have an old trailer on blocks and for the summer, at night when it is still too hot for fuel lights, I want to turn a switch for light.

That should work IMO, but old time lights add up. 3 amps for two bulbs. You have "several" batteries, so if you had two little ones you could parallel them as one bigger 12 and parallel that with a full size 12. That would put less strain on any one little one.

The main light I run is a 12v florescent light. That and a single outside light.

swimmer_spe wrote:

BFL13 wrote:
I think it all depends on what you are going to run with them in parallel. I am only familiar with paralleling different capacity size house batteries for RV deep cycle use.

Somebody who knows about starting batteries and your intended use needed here!

All it is for it to run some lights. Basically, I have an old trailer on blocks and for the summer, at night when it is still too hot for fuel lights, I want to turn a switch for light.

That should work IMO, but old time lights add up. 3 amps for two bulbs. You have "several" batteries, so if you had two little ones you could parallel them as one bigger 12 and parallel that with a full size 12. That would put less strain on any one little one.

BFL13 wrote:
I think it all depends on what you are going to run with them in parallel. I am only familiar with paralleling different capacity size house batteries for RV deep cycle use.

Somebody who knows about starting batteries and your intended use needed here!

All it is for it to run some lights. Basically, I have an old trailer on blocks and for the summer, at night when it is still too hot for fuel lights, I want to turn a switch for light.

I think it all depends on what you are going to run with them in parallel. I am only familiar with paralleling different capacity size house batteries for RV deep cycle use.

Somebody who knows about starting batteries and your intended use needed here!

https://www.walmart.ca/en/ip/everstart-lawn-and-garden-battery/6000195362571
This is the utility battery.