DESCRIPTION
The next generation of 21700 rechargeable battery from Keanos ® , the KN 2150 has an amazing 5,000mAh capacity . This powerful battery has improved performance and superior energy density compared to previous 18650 batteries. An ideal companion for Keanos ® Diving and Operational Flashlights, an extra 21700 is a great backup battery to have on hand, as more Keanos ® electronics and flashlights will use this battery.
The KN 2150 has a built-in USB-C port and can be charged directly with a USB-C cable or using a traditional charger. The Keanos ® KN 2150 has all the safety features, quality engineering and more that have made Keanos ® a trusted brand for rechargeable Li-ion batteries.
Your expensive electronics are safe in combination with a KN 2150 that features a built-in pressure relief valve, high-temperature resistant design, and built-in safeguards to prevent overvoltages.
Therefore, by using a Keanos ® 21700 rechargeable battery you have complete protection against overcharging, overdischarging, as well as short circuit. The KN 2150 is made with high-quality materials, such as nickel-plated stainless steel connectors for impact resistance, good conductivity and oxidation resistance.
The Keanos ® 21700 rechargeable battery has an LED charging indicator. When we charge the battery and it is not fully charged, then the charging indicator light is red . When we charge the battery and it is not charged, then the charging indicator light is green.
The most impressive technical advantage of the Keanos ® 21700 rechargeable battery is that if it is properly recharged (i.e. we never let the battery discharge completely, except up to 10% of its total capacity) then it can reach its maximum lifespan of 500 charging cycles .
TECHNICAL SPECIFICATIONS / FEATURES
Type: KN 2150 Capacity: 5,000 mAh Voltage: 3.6 V
Pulse discharge current intensity: 18 A Max Continuous discharge current intensity: 15 A Max Continuous discharge duration: 3 minutes
Energy Density: 240mWh/g (11% higher than 18650 Batteries)
Weight: Approx 75.5gr / 2.66oz
Length: 76.5 +/- 0.3mm / 3.02” +/- 0.01”
Diameter: 21.0 +/- 0.3mm / 0.83” +/- 0.01”
The actual measured capacity is about 5,000mAh, which is ~15% larger than a common 21700 lithium rechargeable battery. The KN2150 is compatible with most brands of flashlights that are compatible with the 21700 rechargeable battery.
PACKING
1 x Keanos® KN2150 21700 Type – C Rechargeable Lithium Battery 5,000mAh
1 x User Manual in Greek and English
INTERNAL SECURITY
- Microporous barrier protects sensitive internal components
- The pressure relief valve is activated in the event of a rapid increase in temperature
- Made of PTC to inhibit high current surges.
EXTERNAL SECURITY
- Equipped at both ends with nickel-plated SS protector ensuring high impact resistance, good electrical conductivity and oxidation resistance
- Hard plastic circuit board protector
- Coated with a durable metal film for protection against abrasion.
HIGH PERFORMANCE CIRCUIT
- Automatically protects against overcharging, overdischarging and short circuit
- Uses high-quality battery protection IC
- Uses two high-power MOS FETs in the current regulation unit for better efficiency and superior performance
The Keanos® KN2150 is the best rechargeable battery choice. Its powerful capabilities and so many additional features ensure the best performance and long-lasting experience of LED flashlights.

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