Keeppower batteries are very well known in the Flashlight community and are extremely well made.

Review - http://lygte-info.dk/review/batteries2012/Keeppower%2026650%205200mAh%20%28Black%29%202014%20UK.html

Specification:

• Brand: Keeppower
• Model: 26650
• Part No.: P2652C
• Battery Type: Li-ion Battery
• Min.Capacity: 5100mAh
• Standard Capacity: 5200mAh
• Voltage: 3.7V
• Protective Board: Yes
• Recommended Charge Current: 1-2A
• Max Constant Discharge Current: 9.50A
• Size: (L)69.50mm*(D)26.40mm
• Weight: 98g

Features:

• In Built Safety Circuitry
• Protection Circuit (Against overcharge, over discharge, over current and short-circuit.)
• Quality Lithium Ion rechargeable cell, Maximum Capacity and Reliability;
• 4.2 volts max voltage and 3.7 volts nominal voltage;
• Over 2000 charge-discharge cycles.

Package included:

1 x Keeppower 26650 5200mAh Battery

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NOTE** All flashlights, chargers have been tested and battery voltage measured.

Please allow up to two business days for orders to be posted, after your order date.