

It matches the voltage to the correct temperature, making the battery last longer. I've also put a pot in one of mine to adjust for seasonal temperatures. The ones in the garage have been working several years. The float chargers I used outside didn't last.

They were discussed on this forum in 2012: The HF float chargers can put out 500 mA but don't unless the battery needs it. Set the charger to the slowest charge rate. Hook up the negative cable on the charger to the negative terminal on the battery. I posted the schematic on ARF some time ago, found here. GET NEW COUPONS CEN-TECH 12v Deluxe Battery Maintainer and Float Charger Item 62813 / 61911 / 63161 Compare our price of 24.99 to SCHUMACHER ELECTRIC at 34.99 (model number: SC1278). Hook-up the positive cable on the charger to the positive terminal on the battery. I made a simple low voltage alarm to solve that problem.

I've used these cheap Harbor Freight float chargers for years knowing they can drain the battery if they fail. It or the other one, I can't remember which one, malfuntioned in a way that melted the wiring, which could have caused a fire. One failed and output too much current (no longer float charge). One for the RV house battery and the other for the RV truck battery. A few years ago, I bought a more expensive pair from Walmart. Share 15K views 5 years ago In this video I will show you a demonstration of how good a Cen tech Automatic Battery Trickle Float Charger is.

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