Item specifics
Torch Battery NCR18650B 3400mAh Panasonic Li-ion 3.7V BUTTON TOP (Genuine)
Ideal for Flashlight / Torch / Doorbell
+Free Carry Case
What’s the best 18650 battery and what type to choose?
Panasonic 18650 Batteries are available in THREE following models/sizes:
Flat Top (65mm~ Long | Button Top (67mm~ Long) | PROTECTED Button Top (70mm~ Long)
 
Three Types of Panasonic NCR 18650 B 3400mAh Li-ion Torch Battery
Please carefully measure your device’s battery compartment and choose the correct version. (e.g., Most Doorbells and Solar Cameras ONLY work with Button Top ( 67mm~ version). Another factor that needs to be considered is an 18650 Lithium Battery Discharge Rate, as some devices (e.g., Power Tools) require High Discharge or High Drain batteries to supply a high amperage in a shorter time on demand.
Note: Unlike several generic products in the market claiming unrealistic high capacities, we ONLY supply GENUINE and fresh batteries. Each cell is tested before dispatch.
Product Features: 
Capacity (Ah): 3.4 Ah Max (3400 mAh) Min (3250 mAh)
Nominal Voltage (V): 3.6 ~ 3.7 V
Charging Voltage (V): 4.2 V 
Charging Current (Ah): 1 Ah (1000 mAh)
Cut-off Voltage (V): 2.5 V 
Energy (Wh): 12.2 Wh
Energy Density (Wh/L): 730 Wh/L
Max. Discharge rate (C): 2C (Recommended Max current 6.8 A)
Pulse current (Ah): (5-6 sec.): 12 Ah 
Weight (g): 48 g (+/- 0.5 g)
Model: NCR18650B (Button Top) 
Made in Japan
Package Includes: 
3x Genuine Panasonic NCR18650B (Button Top) Rechargeable Battery for Torch / Flashlight
Battery Carry Case
 
Warning: 
Never wholly discharge a Li-ion battery (below 2.5V under load).
Charge fully to 4.2V before first use.
Never use force to install (insert) a Li-ion battery.
Do not use old and new battery cells together.
Use only a high-quality battery charger.
Do not remove the heat shrink/wrapping cover (it must be used as it is).
Do not expose to heat, NOT penetrate or modify.
Do not short (connect) positive (top), and negative (bottom) battery terminals (contacts).
Keep a battery, not in use in a plastic holder (or any insulating [plastic] container).
Never charge the battery over 4.25V (another reason to use a high-quality battery charger).
Do not charge unattended nor overcharge unprotected cells.
 
Looking for Top Quality 18650 Chargers? Check out our chargers
To learn more visit: https://batteryuniversity.com/