I have a tablet with 3.7v li-ion battery which lasts few minutes on ... and an old phone with the same type and voltage battery can I replace tablet battery with this one? and how?

  • If the batteries are the same size i.e. the phone's battery fits inside the tablet then it should work. One downside: Tablet batteries usually have bigger capacities which means that your phone's battery won't last as long as a new tablet battery. – GiantTree Jan 17 '15 at 16:01

If they are literally the same (size ,voltage ,capacity) then it will work just fine

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