Features:
Type: NL166
Capacity: 650mAh
Voltage: 3.7V
Charging Current: Maximum 650mA
Weight: 17.8g
Size: Diameter 16.6mm, Length 34.8mm

Postive end is a standard button size allowing maximum equipment compatibility. Compatible with most brands of flashlights

High capacity and high performance
Actual measured capacity is approximately 650mAh
A high output current of up to
4A makes NLI66 compatible with various kinds of high-drain devices.

Purpose-designed high-performance protected circuit
1. Automatically protects against overcharge, over discharge and short-circuiting
2. Utilizes a high-quality battery protection IC from Seiko Instruments Japan
3. Utilizes high-power MOS-FEE in the current regulation module for better efficiency and superior output.

External Safety Features
1. Equipped at both ends with a nickel-plated S.S protector ensuring high impact resistance, good electrical conductivity and oxidation resistance
2. Tough plastic circuit board protector
3. Coated with durable metallic film to guard against abrasion

Internal Safety Features
1. Microporous barrier protects delicate internal components
2. Pressure relief valve activates in the event of a rapid temperature increase
3. Built-in PTC to inhibit high current surges
4. Innovative anode design with high temperature resistance