Battery charge indicator seems faulty.

Battery indicator (on Pocket Loox 410) shows that the battery charge depletes rapidly. Replaced the battery. Charged the battery overnight. Battery charge led flashed continuosly. Removed charger and checked battery charge in system-> power. Battery 95% charged. Left it to charge for a while longer. Checked the battery charge again . Now down to 10 % ?!. It seems to get above 95% charge and then indicate that the battery is flat. Measured the battery voltage at different stages ogf the charge cycle . Measured 4.2V under no load even though the charge indicater shows anywhere from 2% to over 80%. Convinced that the battery is fully charged but that the charge indicator is faulty. Did a hard reset and tried again. same result. The unit goes into suspend mode when it indicates low and is not on charge -as per the manual - even though the battery is at 4.2v. When it indicated 95% I could use it ok.