Description Next-Generation 4000mAh Battery From Nitecore’s latest battery lineup, the Nitecore NL1840 battery stands out with a high-capacity 4000mAh design. It is delivering extended run-times for flashlights, headlamps, and other high-performance devices. Built as a premium rechargeable battery, the NL1840 offers improved energy density compared to standard similar battery cells. That is making it a dependable choice for users who need longer-lasting power in demanding applications. Backed by NITECORE’s precision engineering and strict safety standards, the NL1840 reinforces the brand’s reputation for reliable, high-quality rechargeable batteries. One of the chargers suitable for this battery is the UMS4 Charger. Premium Build with Safety Features The NL1840 features a built-in intelligent protective circuit. Plus an integrated pressure relief valve to safeguard against overcharging, over-discharging, and short circuits. Constructed with nickel-plated stainless steel protectors on both ends, it delivers enhanced impact resistance, efficient conductivity, and protection against oxidation. Finished with a durable metallic coating for added abrasion resistance, the Nitecore NL1840 is built for longevity and can withstand over 500 full recharge cycles, making it a cost-effective and environmentally friendly power solution. Specifications Capacity: 4,000mAh Voltage: 3.6V (14.4Wh) Continuous Discharge Current: 5A Length: 69.8mm±0.3mm / 2.75″±0.01″ Diameter: 18.6mm±0.3mm / 0.73″±0.01″ Warranty This product carries a 1 year free component replacement warranty. We do not offer further support after 1 year.
