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the storage capacity of the spare battery is only relative and the actual usage capacity as well as the performance will never reach 100% as advertised by the manufacturer.

rechargeable backup batteries are becoming more and more popular in everyday life, but if used in the wrong way can cause explosion, even human damage.

with a backup charger for self-powered mondem from a backup battery for this phone, you don't have to worry about internet interruption when you have a rotating outage during this