Features:
No "memory" effect， long life battery.  
Over current， over charge and discharge protection.
Rechargeable， eco-friendly and energy-saving.
With a plastic box to keep the battery.   
Provide excellent continuous power sources to your devices.  
 
Specifications:
Color: Black
Type: Rechargeable li-ion battery
Model: AA
Voltage: 3.7V
Capacity: 800mAh  
Charge: standard 160mA， rapid 800mA to 4.2V
Max continuous discharge: 2A， cut-off 2.8V
Quantity: 4pcs
Product size: Approx. 5 * 1.4cm / 2 * 0.6in (Height * diameter)
Product weight: 19g / 0.7oz (1pcs)
Package size: 17.5 * 8.5 * 2.5cm / 6.9 * 3.3 * 1in
Package weight: 106g / 3.8oz

Package List:
4 * 3.7V AA Rechargeable Li-ion Battery
1 * Battery Box