HohmTech RunXL 21700 4007mAh max. *38.6A Lithium-ion battery NMC, 3.6V - 3.7V

Item number: 100837


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The underlying safety properties of an NMC (lithium-nickel-manganese-cobalt-oxide) cell and its characteristics led to the decision at HohmTech to release the battery for further applications such as battery carriers for e-cigarettes, where safety at high loads is a prerequisite.

The 21700 RunXL battery cell has a *max. output of 111W (Watt) and can be loaded up to a max. of *38.6A (Ampere).

Several years of development of the cell originally developed for the automotive industry with Li-NMC chemistry. The charging and discharging characteristics of the manganese-based cell achieve values that are well above the requirements of the automotive industry.

21700 Hohm Tech RunXL battery for safe use in the battery carrier.

The precisely stated key figures have become a trademark in the meantime. High popularity and breakthrough on the market reached the batteries in the USA where the headquarters of the company is located. In a survey conducted by the most respected E-zig. Forum on popularity and confidence in the market, HohmTech batteries took first place.

Information on the safety of Hohm Tech batteries:

Hohmtech works with a number of industry companies, certification bodies and industry regulators to ensure that customers are consistently provided safe and reliable high performance cells that meet all safety and transportation regulations.

Technical data on the HohmTech RunXL 21700 rechargeable batteries:

Capacity 4007mAh 14,42 Wh
Minimum capacity 3915mAh
Nominal voltage 3.6V - 3.7V
Charging end voltage 4,2V ± 0,05
Final discharge voltage 2,5V
Max. discharge current (constant) 30A (30000mA)
max. discharge current (temperature monitored 80°)* 38.6A (38600mA)
recommended charging current 0.xx - 2.0A (2000mA)
max. charging current 6.01A (6010mA)
Protection electronics PCB/BMS none
Positive pole flat (Flat Top)
Diameter 21.55 mm ± 0.15 mm
Height 70.45 mm ± 0.2 mm
Weight 74.9g ± 1 g
Charging method CC-CV


Comparisons, discharge curves and test runs:

https://www.e-cigarette-forum.com "This is a good performance 21700 cell"

Data sheets on the HΩ RunXL:

HΩ RunXL 18650 (Datasheet)

IEC (62133) (international standards organisation).

UN (UN38.3)

MSDS (safety data sheet)

CE (European Conformity)

ROHS (Restriction of the use of certain hazardous substances in electrical and electronic equipment).

Safety instructions:

Lithium cells may only be operated with protective electronics!
Please note that lithium cells may only be used by authorised specialist personnel.
Incorrect handling or short-circuiting may result in fire or explosion.

Further characteristics:

Lithium-ion batteries are thermally stable and are not subject to any memory effect.
They work on the basis of lithium and are characterised by a high energy density.

Scope of delivery:

1x HΩ RunXL - 4007mAh, lithium-ion battery.


*Hohm Tech gives these cells a "temperature-limited" output of 38.6A. This means you can run this cell at 38.6A as long as you don t let it get hotter than 80°C. However, we d recommend not going that high as it increases the risks, reduces the performance and accelerates the ageing of the cell.

Charging current Normal (recommended) 0.xx - 2.00A (2000mA )
max. charging current up to *6.01A
Operating temperature Charging 0 °C - 60 °C
Operating temperature discharging -40 °C - 80 °C


A special charger is required for charging lithium-ion batteries, which charges the batteries according to a special charging procedure. (CCCV = constant current, constant voltage.) The batteries must not be charged above a voltage of 4.2 volts, otherwise there is a risk of fire and explosion. It is advantageous to charge the batteries only up to approx. 4.1 volts, as this significantly increases the service life or the number of charging cycles (possibly up to double). Only lithium ion chargers may be used for charging. However, the cheap chargers sometimes have the disadvantage that they do not switch off safely at the end of the charging process, but continue to charge the batteries with a small charging current, which can be dangerous.

Furthermore, rechargeable batteries and batteries do not belong in household waste! Please dispose of them as prescribed by law at the municipal collection points or in the [usually green] containers provided by retailers.


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Für die Länder Schweiz und Liechtenstein fallen lediglich die Nettopreise der jeweiligen Artikel an, ohne deutsche MwSt. Die Verzollungskosten werden separat berechnet. Bei Einfuhr müssen die Steuern des jeweiligen Landes beglichen werden.

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