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Can you really "overcharge" cell phones or laptops nowadays?
I know that in the early days you had to be careful not to charge batteries too long in such things, but now I thought there was a circuit that protects things from 'overcharging' -- can you please explain whether leaving my cell phone/laptop plugged in overnight actually reduces battery life or capacity. My hubby and I have a disagreement on this. Please help.
5 Answers
- billrussell42Lv 71 decade agoFavorite Answer
A good quality charger senses when the battery is fully charged and reduces the current to a low amount, just enough to keep it fully charged.
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- RorschachLv 51 decade ago
generally yes, the other posters are correct that most modern charging circuits will not "overcharge" a battery, but it can shorten a battery's life to leave it on a "trickle"charge at all times. Most batteries last longest when they are cycled between 20% and 80% of capacity.
- Truth or dare?Lv 61 decade ago
Yes. Now a days highly sensitive chargers are available which cut of the circuit if over loaded.
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- 5 years ago
No. It's pain in the asss BQ: It's the new regulations. All levels have limits now. You can only ask 20
