BlinkingLeds
- Feb 23, 2013
- 180
- Joined
- Feb 23, 2013
- Messages
- 180
Hi got 4 18650 batteries (4.5Ah) and i want to connect them in series to make a flashlight with a 10w led. The problem is how to charge them.
I don't trust those "quick chargers" that one can buy from ebay because they reduce the life expectancy of batteries.
That's why i want to make my own among other reasons. I need to charge them at 5A. I've been going through the datasheets on digikey for bat charger ICs and the most i could find is 3A for a linear charger. I have found some switch mode charger chips but i'm not sure if the circuit in the datasheet is correct.
http://cds.linear.com/docs/en/datasheet/1510fc.pdf
http://cds.linear.com/docs/en/datasheet/4006fa.pdf
http://www.ti.com/lit/ds/symlink/ucc3956.pdf
Thanks
I don't trust those "quick chargers" that one can buy from ebay because they reduce the life expectancy of batteries.
That's why i want to make my own among other reasons. I need to charge them at 5A. I've been going through the datasheets on digikey for bat charger ICs and the most i could find is 3A for a linear charger. I have found some switch mode charger chips but i'm not sure if the circuit in the datasheet is correct.
http://cds.linear.com/docs/en/datasheet/1510fc.pdf
http://cds.linear.com/docs/en/datasheet/4006fa.pdf
http://www.ti.com/lit/ds/symlink/ucc3956.pdf
Thanks