Depends on the battery type, etc. Li-Ion batteries are a lot more complicated than what one might think- the circuit board inside can actually be quite smart and monitor the exact condition of the cells, so it knows how far to charge them, at what voltage and current, etc. Li-ion cells must be monitored, charged, and discharged very carefully or else badness will happen (think exploding laptops and cell phones).
You may be safer with just getting a new battery. There may even be legislation in place governing the sale of li-ion cells without charge controller, but I am unsure of this. On Thu, 2006-07-13 at 22:09 -0400, Michael Hughes wrote: > I read the label to not open the laptop battery, but I had nothing to > lose and did it anyway (carefully). What I found was a tiny circuit > board and 4 sets of three batteries each. Two of the cells from one of > the 3-packs failed a voltage test. > > Does anyone know of a local source for single cells?
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