Solar trickle charger fail!
It's a 10W solar trickle charger. Found my dual battery down to 9.6V and can't operate my powered jack. Good I have my spare battery, for my kayak motor, that saved the day. My 100W Renogy so...
Forum Discussion
A 10 watt solar maintainer is not a waste of time, but there are some caveats.
* For optimal results, disconnect the batteries from everything except the maintainer.
* Batteries must be in good shape to begin with.
* Batteries must be fully charged to begin with. That 10w is a maintainer, not a charger. It isn't enough to do more than maintain.
I use one of these on my truck, just plugged into the cigar lighter. If I don't start my truck for a couple of weeks, this keeps my batteries fresh for the next start. Diesel truck so dual batteries just like your trailer. Worse than that, the thing sits on my dash, pointing west, so it only gets direct sun in the afternoon, and through a windshield. This works for me, even during the So Cal winter months when it might be cloudy for hours at a time :) But it is much better during the other 3 months.
So I don't think your solar maintainer was a fail, but I do think your batteries are toast.
* For optimal results, disconnect the batteries from everything except the maintainer.
* Batteries must be in good shape to begin with.
* Batteries must be fully charged to begin with. That 10w is a maintainer, not a charger. It isn't enough to do more than maintain.
I use one of these on my truck, just plugged into the cigar lighter. If I don't start my truck for a couple of weeks, this keeps my batteries fresh for the next start. Diesel truck so dual batteries just like your trailer. Worse than that, the thing sits on my dash, pointing west, so it only gets direct sun in the afternoon, and through a windshield. This works for me, even during the So Cal winter months when it might be cloudy for hours at a time :) But it is much better during the other 3 months.
So I don't think your solar maintainer was a fail, but I do think your batteries are toast.
