How to Make a Coin Battery

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How to Test your Cellphone Battery



A quick way to test if your cellphone battery has gone bad. It is referred to as an “exploded battery”.

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Revive cellphone batteries from Deep Sleep



Have a dead Lithium Ion battery that doesn’t work? It might be in Deep Sleep. Find out how to bring it back to life.
Cellphone Battery. I should note that this is not testing the charge under load and therefore not an accurate reading of a batteries current charge.

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