The next generation 21700 rechargeable battery from NITECORE, the NL2150DW has an amazing 5000mAh capacity. This powerful battery has improved performance, and superior energy density compared to previous 18650 batteries. Specifically designed for the R40 v2, the "DW" series batteries can work only with the NITECORE R40 v2 flashlight. An extra 21700 is a great back-up battery to have on hand, for those extra long patrols. The NL2150DW can only be charged via the mechanisms included with the R40 v2. Fortunately the NL2150DW can be charged directly via the USB-C slot on the R40 v2 or using the two charging docks included with the flashlight.
The NITECORE NL2150DW comes with all of the safety features, quality engineering, and more that has made NITECORE a trusted brand for rechargeable Li-ion batteries. Your expensive electronics are safe paired with an NL2150DW that features a built-in pressure relief valve, high temperature resistant design, and built-in safeguards to prevent surges. This protects you from overcharging, over-discharging, as well as short-circuits. The NL2150DW is built with premium materials, such as nickel-plated stainless steel connectors for impact resistance, good conductivity, and resistance against oxidation. Safe and reliable, the NL2150DW is globally insured and has multiple certifications for electronic use.