Originally Posted by Duster_360

Maximum safe voltage for a 2S lipo is 8.4v.

A 2S lipo should charge to 8.4volts since cell maximum voltage is 4.2v/cell. Don't confuse the "nominal" lipo voltage of 3.7v/cell (7.4v for a 2S) with the max voltage. Nominal voltage is jsupposed to be the voltage under load, it has nothing to do with what the charged voltage.

The charge routine for lipo is 2 steps - CC/CV. Lipo charges at constant current (usually 1C, but sometimes its higher, depends on the lipo) until teh max cell voltage of 4.2v/cell is reached. Then the charger switches to constant voltage, holding the max voltage on teh lipo as it tops off. In this stage you can watch current fall off to zero or close to zero as the charge finishes.

Sounds like charger is doing exactly what its supposed to and everything is fine.