so can I use this circuit for charging these two 18650 batteries in series
Two = 2it says "2-cell Li-Ion " what does it mean ?
also the input voltage is 13-20v , can I use 9-12v adapter?
While charging the battery you must switch the input of the buck converter away from the output of the charging battery and connect it to the output of the adapter that feeds the charger.
The charger circuit from Texas Instruments is missing important safety features that are included in a Lithium battery charger IC:
1) Detection of a battery voltage that is too low and either refusal to charge (to prevent setting the battery on fire) or attempt charging at a reduced safe current.
2) An input for a thermal sensor to detect a battery that is getting too hot.
3) Balanced charging circuit to prevent one cell from becoming over-charged which might set nit on fire.
I think Maxim has good Lithium battery charger ICs.
Shouldn't it be :usually charged at 0.5 to 1.0 of its mAh rating which might be 2600mAh so it would be charged at 130mA to 260mA
Yep. My arithmateek was wrong.Hi,
Shouldn't it be :
1300mA to 2600mA ?
Klaus
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