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1. A method of charging a chemical storage device, comprising:
receiving an Alternating Current (AC) voltage, wherein the AC voltage comprises a sine wave with a period and an amplitude; detecting a positive zero crossing, a positive zero crossing occurring when the sine wave has an amplitude of approximately zero as it crosses from an amplitude in a first direction to an amplitude in a second direction; opening a gate in response to the detection of the positive zero crossing, the opening of the gate allowing the AC voltage to pass to a chemical storage device; detecting a negative zero crossing, a negative zero crossing occurring when the sine wave has an amplitude of approximately zero as it crosses from an amplitude in the second direction to an amplitude in the first direction; and closing the gate in response to the detection of the negative zero crossing, the closing of the gate preventing the AC voltage from passing to the chemical storage device.
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