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| quote: | Originally posted by chinamon
how is it strange? it could be wired so that an inserted battery completes a closed circuit. open circuit = no power. |
Of course the battery closes the circuit. Kind of hard for any circuit to be closed or even exist at all without a voltage source.
The question is, how do some manufacturers manage to screw up the charging system so badly that the line voltage won't also complete the circuit? Normally you charge a battery by applying a voltage across its terminals, not by wiring in series with it. It's actually more difficult to manufacture a device that won't work without the battery, unless it's a total bonehead move like not drawing enough current from the AC source. Which makes perfect sense in the context of a company like Acer because they will skimp on the regulators/transformers in order to save a few cents.
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