Which Solar Panel Battery Maintainer for Dump Trailer?

[Johnkn]

I’m looking for a good, small solar charger for my dump trailer. It has a single Group 24 battery. I suspect I only need a few watts, and would like overprotection from overcharging if possible. The trailer is stored away from an electrical outlet and is only used a very few times a year. Thanks....

 

[nikerret]

The PulseTech SolarPulse are among the best:

Amazon.com: PulseTech SolarPulse SP-7 Solar Battery Charger Maintainer, Blue, 7 Watt : Automotive

Buy PulseTech SolarPulse SP-7 Solar Battery Charger Maintainer, Blue, 7 Watt: Battery Chargers - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

I have one similar to this:

Amazon.com : POWOXI-Upgraded-20W-Solar-Battery-Charger-Maintainer, External Smart 3-Stages PWM Charge Controller, 12V Solar Panel Trickle Charging Kit for Car, Marine, Motorcycle, RV, etc : Garden & Outdoor

Amazon.com : POWOXI-Upgraded-20W-Solar-Battery-Charger-Maintainer, External Smart 3-Stages PWM Charge Controller, 12V Solar Panel Trickle Charging Kit for Car, Marine, Motorcycle, RV, etc : Garden & Outdoor

www.amazon.com

Except, mine is a Sunapex and rated at 7.5 watts. I went with this charge controller:

Amazon.com : ZEALLIFE Solar Panels Charge Controller, 8A Battery Regulator for 12V Solar Battery Charger, Solar Battery Maintainer and 12 Volt Batteries Power Kit Safe Protection : Patio, Lawn & Garden

Amazon.com : ZEALLIFE Solar Panels Charge Controller, 8A Battery Regulator for 12V Solar Battery Charger, Solar Battery Maintainer and 12 Volt Batteries Power Kit Safe Protection : Patio, Lawn & Garden

www.amazon.com

I also bought these cables, to make the setup nicer:

https://www.amazon.com/gp/product/B073158Q24/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1

My setup works fine, especially, for the budget. In hindsight, I should have got the SolarPulse, from the dealer, when I ordered my trailer. They offered it cheaper than I could buy it on my own.

 

[John_Mc]

BatteryMinder makes some of the best battery maintainers out there. They have desulfation, temperature compensation, and can be safely left connected to batteries long term without damaging the batteries (unlike some "dumb" trickle chargers). Here's a link to the solar chargers on the BatteryMINDer website. Northern Tool also sells some the BatteryMINDer Solar Models

 

[ArlyA]

I went with a 50 watt sunenergy make (spelling?) and now I'm looking to adding another 50 panel. Like battery life advertisements, "may last for thousands of hours!" we got less watts than we hoped for from our solar charger.