vehicle trickle charging
Posted: Mon Oct 23, 2023 9:25 pm
I'm not sure if this should rather be under the transport sub forum .
My niece parks her horsebox at the stables she rents, no electricity, and as it is seldom used the battery needs occasional topping up. I have used the little A4 sized ones which plug into the cigar lighter and not been impressed so am now looking at a 90 or120W panel which should just fit inside the screen.
Control is the issue as it more than doubles the price to add a PWM controller, could a voltage controlled relay safely do the job as they only cost 16 quid, set them to cut the panel at 13V and cut back in at 12.5V? It could then also run her electric fence.
My niece parks her horsebox at the stables she rents, no electricity, and as it is seldom used the battery needs occasional topping up. I have used the little A4 sized ones which plug into the cigar lighter and not been impressed so am now looking at a 90 or120W panel which should just fit inside the screen.
Control is the issue as it more than doubles the price to add a PWM controller, could a voltage controlled relay safely do the job as they only cost 16 quid, set them to cut the panel at 13V and cut back in at 12.5V? It could then also run her electric fence.