As usual with all 4000mAh batteries of this quality standard, the Fenix ARB-L18-4000U also uses a high-quality battery cell. Protection PCB with short circuit, overcharge and deep discharge protection. Recommended for torches, LEDs and mech. battery carriers.
The battery is longer than standard L18 batteries and therefore compatible with the following Fenix flashlights:
TK11 TAC, TK11R, TK26R, HM61R v2.0, HM65-T, HM65R, HM65R-T, HM65R-DT, HM65R-T V2.0, HM75R, HM75R SE, CL30R, E28R V2.0, LD30R, PD32R
Please note the dimensions of the cell before buying! Due to the built-in electronics, the cell is not suitable for every application!
Height and diameter are larger than a standard 18650 cell without PCB.
Please note that removing or damaging the protective electronics (PCB) may result in a short circuit, fire or explosion.
High-quality cell with long service life and high cycle stability.
Lithium-ion batteries are thermally stable and are not subject to memory effect.
They work on the basis of lithium and are characterised by a high energy density.
Technical Data
| Cell | Fenix |
| Capacity | 4000mAh |
| Min. capacity | 3800mAh |
| Nominal voltage | 3.6V – 3.7V |
| Charging end voltage | 4.2V ± 0.05V |
| Final discharge voltage | 2,75V |
| Positive terminal | raised (button top) USB-C |
| Max. Discharge current (cell) | 3C = 10A |
| Chemistry | LiCoAlO2 (ICR) |
| Protective circuit PCB | over 4A |
| Charging method | CC-CV |
| Diameter | 18.75 mm ± 0.15 mm |
| Height | 72,00 mm ± 0.15 mm |
| Weight | 55 g ± 1 g |
| Charging current normal/charging time | 1000mA/4h |
| Charging current fast/charge time | 2000mA/2,5h |
| Charging operating temperature | 0 °C – 45 °C |
| Operating temperature discharging | -20 °C – 60 °C |
Notes:
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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