In article , Noel
Hegan writes
Picked up a battery charger for my digital camera recently and the
scant instructions suggested that the charging time can be worked out
via the information on the front of the charger. Minor problem - canny
understand the info:

Model - Hama UNI 3AS1
Info- Sec: AA-2 x (2.8V = 170-190mA 0,48 - 0.53VA)

AAA-2x(2.8V=75-85mA 0.21 - 0.24VA)

9V/E-2 x (9.0V=14-17mA 0.13-0.15VA)

Ok, understand the 3 types of cell but how do I work out the charging
time when using Ni-MH???

AA size NiMH have a capacity of between 1500mAh and 1800mAh so
charging at 170-190mA will take about 10hours, add a bit for losses in
charging and 12hours will see them tippy toppy. Best not to leave them on
charge at this rate continuously, my (slow) charger has a cutout at
16hours to stop overcharging.

HTH
--
fred