Datasheet

Important Note! When charging batteries you must make sure that the charger voltage is less than or equal

to the battery voltage. For the best battery performance/life you should have them matched. For example:

3.7/4.2V battery and 3.7/4.2V charger: OK - 3.7/4.2V battery and 3.6/4.1V charger: OK (but not ideal) - 3.6/4.1V

battery and 3.6/4.1V charger: OK - 3.6/4.1V battery and 3.7/4.2V charger NOT OK!