How to build a Li-Ion charger myself (windmill, generator, solar cells)??

I have a crazy idea:

  1. On my self suppored bicycle trips around the world I want to use a digital camera.
  2. I have faced reality and accepted that most digital cameras use Li-Ion batteries, which makes them very small and handy.
  3. Currently I'm interested in a Sony DSC-T7 which uses a Li-Ion battery. The battery specs can be found here:
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  4. I don't want to carry a regular charger but I want to use either a regular bike generator (the ones powering for front and rear light on a bicycle), solar cells or a home-built mini wind mill which can be mounted on the bicycle and produce electricity during the night.

So the question is: Is it possible to build my own Li-ion charger if I have a varying power source such as a wind mill? I know that Li-ion batteries are difficult to charge and that they may be damaged if treated wrongly. I have seen in some other threads that companies such as Texas Instruments are offering special ICs. What about the small motor/generator for such a mini wind mill application - does anybody have recommendations? Are there some published circuits on the internet which I could use?

Regards, Lucas Jensen

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I thought Li-Ion battery requires very careful management to charge and discharging? Because the battery cannot be sensed for end of discharge?

Cheers, Wizard

Reply to
Jason D.

It would be far easier to get a cammera that uses AA batterys . I have seen a few that take 2 AA and some that take 4 AA then get one or 2 of those solar yard lights that take ordinary AA batterys and remove the cells & battery holder & mount them in someting small and light and keep some batterys charging in daylight

Reply to
Ken G.

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