Are they the Rayovac I-C3 2000mAh 15 minute batteries ? ......if you have the correct charger they take 15 minutes...Which charger do you have ? ...If you have different batteries or charger, I will take much longer.....I also have a Maha charger and agree with china regarding the times......Did you fully charge them when you got them ? ........NiMH have a tendency to "bleed" power when they are left just sitting around, unlike alkaline.......Post a picture so we can see what battery and charger you have....Hope this helps....
Peace,
jk