Renogy 50A DC to DC on board battery charger with MPPT , on Transit with twin batteries ?

[pete the pirate]

Hi folks, I've been following a thread about this but I'm still not sure where I should be connecting this charger for the best results , maybe I'm being a bit thick !!
The bulhead is removed and I will be installing a leisure battery (AGM) seperately in the rear.

Could someone explain in laymans terms as I'm struggling to work it out.

Thanks in advance.
Pete.

 

[Lenny HB]

The B2B connects between the starter battery (the input) and the leisure battery (output from B2B).
The MPPT (Solar) just connects to the leisure.
If its a long cable run best to have the B2B near the leisure battery.

With the Renogy it reduces the B2B charge rate by 50% if it detects any solar input so best to fit a switch inline with the solar input.

I would reconsider the fitting an AGM they are pretty useless as a leisure battery.

 

[pete the pirate]

The B2B connects between the starter battery (the input) and the leisure battery (output from B2B).
The MPPT (Solar) just connects to the leisure.
If its a long cable run best to have the B2B near the leisure battery.

With the Renogy it reduces the B2B charge rate by 50% if it detects any solar input so best to fit a switch inline with the solar input.

I would reconsider the fitting an AGM they are pretty useless as a leisure battery.

Brilliant Lenny, thankyou for that.
Theres a minimal cable run and I will have to see if I can run to a lithium battery , I already have a 120ah lead acid.
Regards, Pete.