For 16340 battery Features:

Voltage: 3.7V
Capacity: 2800mAh

Size:16mm*34mm
 
No memory effect ,can be recharged up to 1200 times when fully or partially drained.
Improved low self discharge makes it still maintain 75% of capacity after 3 year of non-use
The 16340 battery Can replace for CR123, CR17345, K123A, VL123A,, DL123A,5018LC, SF123A and EL123AP
3.7 Volt, rechargeable Li-ion 2800mAh
LSD (Low Self Discharge) function makes the battery could maintain 75% of capacity after 3 year of non-use.
The battery can be recharged up to 1200 times when fully or partially drained.

Application:  for flashlight torch and headlamp, For Netgear Arlo Security Camera.etc...

For 2 Slot Battery Charger:

Charger Description:

High Quality 2 Slots Charger for rechargeable Li-ion Battery Different type.

Quick charge with automatic constant current control prevents battery from overcharging,

short circuit, and electronic shock. This Battery Charger can charge battery quickly

and safely. It is with high efficiency and reliability.

Input Voltage: AC 100V - 240V

Output Voltage: DC 3.7V-4.2V 500mA

Charger Suitable Battery Type: Suitable rechargeable li-ion battery 26650/22650/18500/186'50/18350/16340/14500 ECT

Color: Black

Compatible with:

16340/16650/14500/18500/20700/21700/26650/17650/17670/18350/18490  Li-ion Rechargeable Battery.

For 4 Slot Battery Charger:

Intelligent Smart 4 Slots Charger
Charger Description:
* LED indicator shows current charging status.
* Connect power indicator light: Red light
* Charging indicator light: Red light
* Full charge indicator light: Green light
* Plug type: US plug
* Suitable for: 16340/16650/14500/18500/20700/21700/26650/17650/17670/18350/18490 Li-ion rechargeable battery
* Automatically stops when charging is complete.
* Can charge four batteries at the same time.
* Color: Black 

Compatible with:

16340/16650/14500/18500/20700/21700/26650/17650/17670/18350/18490  Li-ion Rechargeable Battery.