Solar trickle charger, does it work to maint. battery in winter?

As long as you keep the ice and snow off it it will put a 1 amp per battery charge into them during daylight hours. I used a 35w charger on my "yard car" that I drove once in 6 to 8 weeks.

 

What is the amperage rating of the charger? Based on the 50W rating that you stated that is only a 0.5A charger.

If that is the case may I suggest using a 1.0A-2.0A smart trickle charger to maintain your batteries.

This is the one I use...

Robot or human?



This is an 8A smart charger that will charge at 8A when connected to a weak battery bank but once the voltage and amperage have been brought up the charge rate will come down to whatever is required to maintain the batteries.

 

I bought something very similar to this a few years ago when I was off for 3 months and it worked fine on my series 60. It was marketed for RV’s.

 

I have 4 batteries and don’t have access to power so I thought I would try the solar. It works fine on my rig.

 

This is the one I bought. It has 4 suction cup mounts and I lay it on the cab roof when charging. Very easy system to use.

 

As long as the charger puts out more power than the leach draw from your truck you should be fine. May I recommend turning off the battery switch when on the charger.