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I have a SmartSolar MPPT 100/20 charge controller. I also want to use a shore power connected battery charger that will charge the batteries when my RV is plugged in.
I need to know which side of the SmartSolar controller the 12V leads from the external charger are connected to: the LOAD side or the BATTERY?
Thanks!
Hi,
connect your MPPT charger and your external charger in parallel to the battery.
Regards,
Markus
The is what I thought, but wanted to be sure.
Thanks!
Can external charger be bigger than 20 amps ? Fusing is 20...
Just to be clear the external battery charger should be connected direct to the battery terminals / busbar and not to the mppt controller itself.
Your mppt controller is limited to 20a but you can use a larger external charger which should have its own fuse.
