What should I do if I can't turn on the phone after the battery running out of power?

One of the reason is that the battery is 99% damaged, which needs to explain as follow.

Good quality mobile phone battery and original batteries are generally lithium ion batteries, the advantage of this kind of battery is working stability, long life, small memory effect, disadvantage is high cost.

And there's a common nickel cadmium battery, the battery has the advantage of rival lithium ion battery capacity, and cheap, but the disadvantage is that life is short, memory effect is serious, an excessive discharge may make the dead batteries.

General large capacity mobile power supply is the nickel cadmium battery, but there has a mobile power supply chip can discharge protection function, when the battery is close to low discharge protection can make the battery stop working, to avoid excessive discharge, so the mobile power you can rest assured the use of no electricity.

Besides our small four, original battery is, of course, good quality lithium ion battery, do not need special discharge protection, small four also does not have the design discharge protection, so use the shutdown is fine for recharging.But if you change the battery,

Or your small four is js refurbished machines, battery is certainly no doubt cheap nickel cadmium battery, the result is unable to recharge after excessive discharge!Do you understand!

Solution is simple, conditional can put the battery down to ten minutes with 5 v constant voltage to charge, do so to retain 70% of the nickel cadmium battery was not dead, without conditions with power a day and a night the phone might have a surprise (if your character is good enough), is not the final step: go to Taobao buy a battery yourself or change the battery of maintenance, after careful use.

Finally, the classmate of batteries and handheld refurbished machines students need not nervous, nickel cadmium battery charging as long as timely after generally will not have an accident, the most afraid of is not electricity put didn't work for a day or two after charging, it's dangerous.

With smart original battery classmates also want to note that no matter what kind of battery, frequently used turned off to charge is very damaged battery!It can be said that you can see any battery to electricity into the 0 v, 99.99% are discarded batteries, permanent scrap!Used 10% of the battery charging should be immediately!

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