We are using the LTC4120 in out sport prototype device. As power transmitter we are using the basic example shows at the datasheet.
Generally we have a successed battery charging, but in some cases it fails:
- Some times a given Rx won't work with a given Tx, but the charge works if we try with another tx. It occurs specially when the battery voltage is bellow than 3.5V (Vfloat is selected to 4.1V).
- In other cases, when the battery voltage is bellow than 3V, the charge fails. The charging led indicator is on (with a diffuse color), but the battery voltage never growup.
Could you give me any clue of what could be failing?