Battery Indicator

[Guest kaminski]

Hello all...on the M1000,when I charge it on the cradle with the second battery charging as well,the meter reads 100% after charging,however,when I change one nearly flat battery for the second charged battery,when I recharge both again the phone installed battery will indicate whatever the level is,the second battery always shows fully charged even when its flat....is there a trick to get the meter working properly?

Thanks in advance

Mik in Malaysia