I've had a BatteryMiINDER OBD-12 installed to my GMC for several years. I kept it plugged into a solar array using a 10amp solar supply. It has worked great and the SLA battery in the GMC is still like brand new at 100% capacity. After installing a 10amp NOCO GEN 1 in my new Silverado, I decided the 4amp GEN 1 Mini would be a better choice for the GMC than the BatteryMINDER. The NOCO GEN 1 and GEN 1 Mini are certainly more rugged (rated IP68 water resistant), and they cycle off to micro power and sensing when the battery is fully charged - should be good for even longer battery life along with their eight stage charging and power cycling. The new system appears to be working fine and it is supposed to be completely computer safe - for my EZ EFI 2.0 ECU peace of mind. The solar array still does all the charging - only from one of its 120 volt AC outlets.