My rechargable batteries always prompt 'low batt'?

Question

i have indeed charged them already. I use them on my digital camera btw.

Answer 1

They may get old and not really charge, or

Your camera may not support re-charchable batteries to begin with. Recharchable batteries provide less volts than say alcaline batteries (2.4 volts for two "1.5V" vs "2.8"), so check the user manual, they may actually NOT recommend recharchables.