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I need to use Li-ion as a power supply for my PCB. I will use solar power (converted by solar cells with light from the nearest sun) for charging it (or them if I need 2 cells). But the problem is, I've never design or use a circuit like this before. This is not new, so I think you can help me to do this. After finding out for a while, I find that I can buy a CORTEX device of ARM easily in my village. If you've worked with this device, plz help me. Thanks.
But, why not just use a dedicated Li-Ion charger chip?
Rather: why not avoid fires, explosions and whatnot by using a dedicated Li-Ion charger chip
Erik
Indeed - Li-Ion charging is really not something for novices!
See: www.youtube.com/watch