This NiMH battery may have a similar capacity with Alkaline battery but it can be recharged over 500 times, definitely a very environmentally friendly and cost-effective choice
Features:
9V NiMH Rechargeable batteries
Batteries can be recharged more than 500 times
Battery life 1h 30min of continuous speech
Charging time with original Amplicord charger 8/10 hours
Rated voltage:8.4V
Capacity: 250mAh
Standard Charge Current: 25mA, around 15 hours
Rapid Charge Current: 100mA, around 3 hours
Great to power: Digital camera,portable video,game,flashlight,remote control,toy,MP3/MP4 player,electric,razor
Dimension: Length:17.0(mm) x Wide:15.6(mm) x Height:48.5(mm)
Note: Do use proper charger for 9V NiMH Battery to charge it