When the battery is in use, do not discharge until the battery cannot supply power. Of course, lead-acid batteries generally have a little power and will not be dead, but there is one situation that is very harmful to the battery. If the battery is not used for a long time, the battery will lose power due to self-discharge. If it is not used for a long time, the battery will be over-discharged, so it is necessary to recharge the battery every half a month or so.

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