DieHard Smart Charger/Maintainer
Sears’ DieHard batteries were on the market years before the movies made Bruce Willis a multi-millionaire, and the company has offered battery chargers under that brand name for almost as long. The $100 DieHard Smart Charger is priced twice as high as its dumb variety, but Sears hopes to entice you with its ability to monitor the process and check the health of your battery on your smartphone or tablet. Automatic voltage detection (6 volts for motorcyles and lawn tractors/12 volts for cars and boats) is another nice feature that could help avoid a potentially dangerous situation.
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