Quote:
Originally Posted by John Mercier
The contacts and circuitry inside.
Generally the charger will simply not work... but some manufacturers have warned of fire hazards do to overcharging... or customers trying to bypass the safety features to awaken a battery from sleep mode.
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I've never heard of one of these kinds of battery chargers degrading to anything other than a full failure mode. I have several, from multiple brands, that are 10+ years old with no degradation. In the overall scheme of rechargeable batteries I don't think charger degradation is really going to be something the average user encounters.
Bypassing safety features or altering the charger will of course cause all kinds of unpredictable issues.