Battery Charger Testing Results

[f355spider]

I was talking about those super cheap harbor freight chargers maintainers as that's what I thought you were referring to. I actually trust those more than my larger chargers as they don't have enough current to boil the batteries easily at 13.4-ish volts.

Admittedly, only a very few brands of battery tenders/chargers offer temperature compensation. I'm uncertain it is a "must have" feature, but it certainly doesn't hurt. My Pulse Tech and two each, Granite Digital "save a battery" battery tenders do not have temperature compensation...only my four Battery Minder brand. But the feature can prevent overcharging in hot weather and under charging in very cold weather. But even in "mild" Seattle, I can get temps in the upper 20's in winter in my garage and I can monitor the float voltage creep up to 14vt and drop below 13vt went it is over 100F