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Why are vehicles designed to allow their batteries to flatten when their lights are left on?
TempusFugitive
That's not a design feature, that's a flaw!
When the lights are turned on, they draw power from the battery.
If your engine isn't running to allow the alternator to charge the battery, then sooner or later the lights will use up all the stored power in your battery.
simples.
Wiki User
∙ 14y ago
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