Average Reviews:
(More customer reviews)A Battery Tender will constantly maintain a battery without the damaging effects of a "trickle charger". Full charging initially at 1.25 amps (7.25 volts), the charger will switch to a float-charging mode of 6.8 volts to monitor a 6-volt battery. When the battery is accepting only 0.5 amps, the charger's float mode will decrease both amps and voltage. The amp rate will drop to virtually no current (0.10 milliamps), and the voltage rate will drop to 6.8 volts.
~ The "gassing point" of a 6-volt battery is 6.9 volts. Therefore, applying any voltage greater than 6.9 volts for an extended period of time will overheat the battery and warp the separator plates, permanently damaging the battery.~
(Note: This last paragraph above is the diagnosis for why 99% of all 6 or 12 volt motorcycle batteries fail after only a short life. People unknowingly use a standard 6 or 12 volt battery charger on their new battery - which overheats the battery and permanently warps the separator plates.Use a Battery Tender from day one and your battery will outlive it's warranty period.)
I also recommend using "Charge It"(AGL890277Y), a cadmium additive from J.C. Whitney.
Directions for 3-cell, 6-volt M/C batteries:
"Use 1/3 of a 2.5 oz. bottle of "Charge It" into each of the three battery cells BEFORE the acid (electrolyte) is installed. Each cell receives 0.833 fluid ounces of "Charge It" and 7.167 ounces of acid.
Note: By adding "Charge It" into the battery first, you will only have to fill the battery with acid up to the upper level line, instead of having to measure exacting amounts of each." - 1941-1959 Mechanics & Owners Guide to Harley-Davidson OHV Big Twins - Vol. 1
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Product Description:
BatteryTender Plus is one of the most advanced charger/maintainers on the market and is especially designed for today's sealed lead acid batteries. The Battery Tender Plus uses micro-processor technology in a four-stage charging profile to charge, improve, and float your battery, so it will be ready when you are. Constant current charging and regulated voltage patterns allow the battery to be recharged fully and safely without the fear of overcharging.
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