3200mAh Rechargeable Li-ion battery with long-span life for 3nh colorimeter spectrophotometer.3nh colorimeter and spectrophotometer instruments all use the same 3200mAh Rechargeable Li-ion battery with long-span life. This Li-ion battery can be used for 2800 times within 8 hours and charged by powder adapter or USB and charged by powder adapter or USB cable with instrument.