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Similar to a cell phone, Twisp batteries require a deep cycle charge before first use 8 hours or overnight. After which 1-3 hours will completely charge the battery (depending on model, please see accompanying instruction booklet).imilar to a cell phone, Twisp batteries require a deep cycle charge before first use 8 hours or overnight. After which 1-3 hours will completely charge the battery (depending on model, please see accompanying instruction booklet).
For example, if you select the 12-amp rate to charge the battery, the charger needle will be closer to the 12 on the right side. As the battery charges, the needle will drop to approximately half of the selected amperage rate indicating the battery is fully charged (For example: 6-amps).he engine start/cranking assist feature on your charger is for short duration only (typically 3 to 5 seconds ON and 5 minutes OFF). See the front panel of your charger for the recommended crank time your charger allows. Charge the battery for 15 minutes before using engine start/cranking assist.