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It depends on how fancy it is.
The one I have that really annoys me has three basic components plus the basic battery charger.
The positive terminal is isolated from the battery clamp by both a diode and a relay.
The relay is triggered by the battery to be charged and has a diode to detect if it is hooked up backwards and prevent the relay from engaging the charger.
This is really annoying because if the battery does not have some life it wont charge, and because it is cheap junk it does not have a override switch to get things going. AHHHrg!
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∙ 11y ago
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