NP40 battery for Fujifilm camera

Feature:

It's a high energy density, 3.7 V battery that is widely used in the portable
equipment market. High voltage of 3.7 V lets you cut down on the number of
batteries you use. High energy density minimizes battery size and weight,
perfect for use in small portable equipment. No metallic lithium is used so
charging and discharging are very safe. No memory accumulation so it provides
a full charge every time. The outer casing in square type batteries is an
aluminum alloy, so overall battery weight is lower.
100% new high quality generic (non-OEM) Brand New in Retail Package
Quantity: 1
This is a high capacity, rechargeable Li-ion battery with premium Japanese
cell.
Voltage: 3.7V
Weight: ~0.8 oz