Battery Tender 021-0144 Battery Tender Plus 6V Battery Charger
From Battery Tender
| List Price: | $64.95 |
| Price: | $41.90 & eligible for FREE Super Saver Shipping on orders over $25. |
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.
Product Details
- Amazon Sales Rank: #2807 in Automotive
- Size: 6 Volt
- Color: Black
- Brand: Battery Tender
- Model: 021-0144
- Released on: 2006-12-01
- Dimensions: 11.00" h x4.00" w x11.00" l,2.30 pounds
Features
- Spark proof and reverse polarity protected; unit includes a quick connect harness for use in hard to reach areas
- Perfect for all lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell)
- Complete 4-step charging program (initialization, bulk charge, absorption mode and float mode) allows for optimization of battery power, without overcharging
- Automatically switches to float/maintenance voltage after fully charging the battery
- 10-year limited warranty

Most helpful customer reviews
6 of 7 people found the following review helpful.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
3 of 3 people found the following review helpful.I use this charger to keep the battery in my 1931 Model A fully charged at all times. The eyelet harness that attaches to the battery cables permanently is great as the battery in this car is under the wood floorboards and is hard to access. Now after a ride I just open the hood and plug the Tender harness in and its good to go. Always keeps the battery in good shape.
2 of 2 people found the following review helpful.The unit is small...works great... I no longer have to worry if my 52 chevy will start
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