LG - H E 2 18650 20A/35A, 2,500 mah, Flat

18650 Hybrid IMR High Drain rechargeable 18650 battery - Capacity 2500mAh.

18650 battery specs:

• High Drain- Hybrid IMR
• Nominal Capacity: 2500mAh
• Max Pulse discharge rate: 35A
• Max continuous discharge: 20A 
• Nominal Voltage: 3.6V
• Full charge Voltage: 4.2V
• Operating Temperature (cell surface): Charge 0 ~ 50 C , Discharge -20 ~ 75 C
• Diameter : 18.3 + 0.2/-0.3 mm ( Max. 18.5 mm )
• Height : 65.0 ± 0.2 mm ( Max. 65.2 mm )
• Weight Max. 48.0 g
• Positive terminal: Flat top
• Battery size | shape: 18650 | cylindrical

Important:

• Never completely discharge li-ion battery ( below 2.5V under load ).
• Charge fully to 4.2V before first use.
• Never attach any metal moving part |magnet| to the top-positive, or the bottom-negative battery contact.
• Never use force to install (insert) li-ion battery.
• Do not use old and new battery cells together. 
• Use only high quality battery charger.
• Do not expose to heat. 
• Do not short (connect) positive (top), and negative (bottom) battery terminals (contacts). 
• Keep battery that is not in use in plastic holder (or any insulating [plastic] container).
• Do not charge battery over 4.27V (another reason to use high quality battery charger).
• Do not charge unattended.
• Do not store your li-ion batteries fully charged (for extended period of time).
• Store in cold and dry place at approximately 3.7V (storage charge).
• After battery is discharged-don't leave it discharged=>charge it as soon as possible.