Charges/maintains lead acid and lithium-ion batteries (see specification chart). Start voltage sensor detects dead batteries as low as 1 volt. Force mode allows manual charging of extremely dead batteries (down to 0 volts). Built-in battery desulfation mode to recover worn-out batteries (Genius 5/Genius 10). Smart indicators quickly detect when the battery charger is connected in reverse polarity, connected to an incompatible battery, or if the battery is failing.
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Designed to keep batteries at optimal charging capacity, the Duralast BC40DL Battery Charger and Battery Maintainer is both dependable and durable. This compact unit is compatible with all 12 Volt AGM/GEL/WET battery systems. The smart charger feature automatically selects the correct charge rate and then adjusts from rapid charge to maintainer to maximize battery life. You can also get a powerful 40 amp engine start to jump start most vehicles in 60 seconds or less.
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