Which battery agm or lead .

[stevenansuzanne]

Hi moho peeps .looking to change. My starter battery .not sure is best .agm or lead acid ?
Also I have a victron solar charger to charge my lithium leasure battery and starter battery will I have to install seperate solar system to charge them individually or will the victron charge both OK. Thanks

 

[Richard n Ann]

Hi moho peeps .looking to change. My starter battery .not sure is best .agm or lead acid ?
Also I have a victron solar charger to charge my lithium leasure battery and starter battery will I have to install seperate solar system to charge them individually or will the victron charge both OK. Thanks

It's usually Votronic that charge both leisure and starter battery. What model Victron charger is it?

 

[Richard n Ann]

I fitted a new standard Varta lead acid starter battery last year, no stop start on my van though

 

[stevenansuzanne]

It's usually Votronic that charge both leisure and starter battery. What model Victron charger is it?

Think it's victron solar 100/50

 

[Richard n Ann]

Think it's victron solar 100/50

Maybe your starter battery gets a charge from a battery master then?

^{_{Subscribers  do not see these advertisements}}

 

[Jev88]

Engine battery I use lead acid.

No, you can't just pump power from your solar controller to both batteries unless it is a dual controller as lithium and lead batteries need different voltages etc...... Simplest is put all power to leisure battery and a Battery Master from leisure to engine battery for a trickle charge of surplus power.

 

[PlacidoD]

Engine battery I use lead acid.

No, you can't just pump power from your solar controller to both batteries unless it is a dual controller as lithium and lead batteries need different voltages etc...... Simplest is put all power to leisure battery and a Battery Master from leisure to engine battery for a trickle charge of surplus power.

If you are swapping like for like (replacing LA with LA or GSM with GSM) you should have zero problem. Either your solar charger is already coping giving 100% charge to both batteries or at least giving a circa 98% charge to the LiFePo4 leisure batteries with either B2B or mains charger giving 100% to the LiFePo4 and that will do no harm (unless you have a really massive amount of lithium). AGM, Lead Acid and lithium have different charging profiles. So if it ain't broke don't fix it just replace like with like. My bet is that your vehicle battery is lead acid but if you have start/stop it could be GSM.

My one caveat would be if the lithium install is recent and the engine battery has gone seriously downhill since. But that is not part of what you are asking atm!