Is the shore power charger adjustable?

I have read that the charger which charges the leisure battery when on shore power is a Dometic.
My question is - is this adjustable?

I am changing the leisure battery for a lithium battery (and before anyone pipes in, yes I am doing the necessary other work such as a DC-DC charger).

One thing I have never read about is the situation where the leisure battery is charging from shore power - is there a way to change the profile in the shore power charger to lithium?

you added the 50a charger rite... then why need to mess with the shore power charger?
im just trying to get the whole setup.

if you added the voltronic charger infront of the lipo battery then why do anything`?

the only thing i can think of is that shorepower charges very slowly... so ofc if u wanna charge fast. Also its a good Q what happens with a 220v > ac-dc->dc-dc setup.


oh and one more Q .... i posted u had to drag new cables from seat to seat.... why was that neccesary? the existing cables where to short or?


its good to follow your little project.

p.s let us know the brand of the battery ure getting since measuring everything sux...

changing the ac-dc settings just creates more challenges i think. then what about the rest of the system. theres also a starter agm battery rite.. D

XEG12 said:

I have read that the charger which charges the leisure battery when on shore power is a Dometic.
My question is - is this adjustable?

I am changing the leisure battery for a lithium battery (and before anyone pipes in, yes I am doing the necessary other work such as a DC-DC charger).

One thing I have never read about is the situation where the leisure battery is charging from shore power - is there a way to change the profile in the shore power charger to lithium?

Click to expand...

As far as I've read I don't think the house charger is capable of charging the lithium battery.
I have seen other people swap it out for a smart charger capable of charging both batteries.
If I find the info I'll post it here.

Van Diesel said:

you added the 50a charger rite... then why need to mess with the shore power charger?
im just trying to get the whole setup.

if you added the voltronic charger infront of the lipo battery then why do anything`?

the only thing i can think of is that shorepower charges very slowly... so ofc if u wanna charge fast. Also its a good Q what happens with a 220v > ac-dc->dc-dc setup.


oh and one more Q .... i posted u had to drag new cables from seat to seat.... why was that neccesary? the existing cables where to short or?


its good to follow your little project.

p.s let us know the brand of the battery ure getting since measuring everything sux...

Click to expand...

Think as the DC-DC 50A charger as more of a limiter, it'll charge the lithium battery steadily at 50A and no more. Lithium batteries, especially when heavily drained have no mercy, they will take as much current as they can get hold of, this will result in an alternator burn out or fire through the cables.
The profiles of classic chargers are to charge the batteries slowly, trickle charging. This is no good for lithium. Also If the lithium battery shuts down due to extremly low power, the classic charger is capable of doing a 'wake up'.
As far as the cables goes, the existing cables will have to run to the DC-DC charger and back to the lithum battery wth inline fuses, thus the extra cable.

@XEG12 some photos would be nice.

If I'm not mistaken you can replace your "factory" charger for this one for charging lithum batteries.
I beleive it will fit where the original is and also has a "night - low output" mode so that fans don't run and make noise.

Well the project is complete. Now to answer some of the questions above

Firstly for whoever asked the battery used was a 180Ah Titan.
Many others are taller and will not fit. Even the Titan needed a busbar fitting as the positive terminal would not go on the Titan with all the cables attached to it (the gap around the sides of the positive terminal is smaller than the original

In answer to a question above about why bother with shore power, if I am on a campsite for a while then the DC-DC charger is no use as the engine is not running so the alternator cannot charge the car battery.
I do have solar but if I am doing serious work on my computer such as video rendering then I still will not have enough power for several days off-grid so find a campsite.

For those concerned the DC-DC charger may provide too much power and burn out the alternator a) the alternator provides more than 50A and b) thats the point of the DC-DC charger - if the main battery cannot provide enough then the DC-DC charger will provide less charging current.

My understanding now it the built in charger which uses shore power CAN charge the Lithium battery but will not be optimal.

ok thx for sharing.

i assume its this one: