Battery: 9V 280mAh rechargeable Ni-MH batteries
Package: 8 pack rechargeable 9V Ni-MH (Nickel Metal Hydride) battery
Improved low self discharge makes it still maintain 75% of capacity after 3 year of non-use
Batteries come pre-charged and can be recharged up to 1200 times
Recommended for smoke alarms, professional audio and medical devices
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