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  • Lithium Polymer Etiquette: A Comprehensive Guide to Working with LiPo

    I'm highly doubtful that it's a 1S2P pack, and if it were by some freak occurrence a parallel pack - it would not require the cells to be balanced. Parallel packs do not require the cells to be balanced, as current is divided evenly for the most part between all of the cells in the parallel circuit. Whereas in a series pack, the cell with the lower voltage (or higher internal resistance) will be the "weak link in the chain" and will have a chance of either over-discharging or over-charging if not balanced. I know these things, being that I'm an electrician as well as being really into electronics and quadrotors as hobbies - I live and breathe this stuff ;) Plus a simple googling will tell you that most cell phone batteries either have a thermistor or will have protection circu...see more »I'm highly doubtful that it's a 1S2P pack, and if it were by some freak occurrence a parallel pack - it would not require the cells to be balanced. Parallel packs do not require the cells to be balanced, as current is divided evenly for the most part between all of the cells in the parallel circuit. Whereas in a series pack, the cell with the lower voltage (or higher internal resistance) will be the "weak link in the chain" and will have a chance of either over-discharging or over-charging if not balanced. I know these things, being that I'm an electrician as well as being really into electronics and quadrotors as hobbies - I live and breathe this stuff ;) Plus a simple googling will tell you that most cell phone batteries either have a thermistor or will have protection circuits that communicate with the device over a single conductor in the case of a 3-pin battery. You could probably trick the device into thinking it has a temperature probe by using a resistor, but without knowing the device or the information on the original battery there's no way to know for sure as these things vary between manufacturers.

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