Review on WirthCo 20060 Battery Doctor Black CEC Certified Smart Battery Maintainer (12V, 1 Amp To 4 Amp) by Richard Rob

I have two vehicles currently 'garaged'. While I store them with the battery disconnected, it still drains as I sometimes am out-of-town for 6-9 months. I used this to charge both batteries recently and both vehicles started up on their first crank.One caution is that it can take quite a few hours to charge. It is a taper charger, so the supply current slowly drops as the battery charges. My first battery took about 10 hours, and the second took about 13 hours. While this was acceptable to me, and I think is actually a healthier way to charge the battery vs a fast charge, those that buy this should be aware of the time it might take. The charger does detect a full charge and effectively 'switch off', so there is no risk of overcharging, so it could just be left on overnight.