Harold Hallikainen wrote:
>> Just be very careful when charging Li-Ion cells. Use a quality
>> self-contained chip to do it with; DON'T
>> use a PIC to charge the battery. Proper charging requires a thermistor
>> to measure battery temperature.
>>
>> My personal preference is to NOT use Li-Ion, but to use NiMH cells,
>> which are quite safe and are being
>> constantly improved. (The inherent instability of Li-Ion cells and the
>> problem with Chinese manufacture of
>> defective cells cause me not to use them.)
>>
>> In any case:  Good luck.
>>
>> --Bob
>>     
>
>
> Are there any single chip NiMH chargers around? All the single chip
> chargers I find are Li-Ion. I used one of the LTC Li-Ion chargers in one
> project, and it worked out well. I'm working on another project now using
> NiMH. So far I have the PIC controlling the charging.
>
> Harold
>
>   
Actually, there are a few NiMH charging chips (LT makes a couple). But 
you CAN charge NiMH with a PIC.
I just pulse the battery with 0.1C to 0.2C and let it rise slowly until 
it reaches the 'dip'.

--Bob
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