This kit is perfect for any of our Nitecore flashlights that utilize the 18650 Li-Ion battery. This kit comes with the popular
Nitecore D2 Charger and a quantity of TWO Nitecore 2300mAh capacity 18650 batteries. This is the perfect add-on to Nitecore's EC20, MH20, or EC4S flashlights.
Nitecore NL1830 Battery:
If you have a device and are looking for a battery powerful enough to maximize your devices performance, look no further. Nitecore is one of the worlds leading manufacturers of rechargeable Li-Ion batteries. The NL183 Li-Ion 18650 battery offers both internal and external safety features to protect from overcharging, short circuiting, over discharging, and more!
If you are looking for an 18650 battery for your flashlight, Nitecore will ensure your flashlight gets the maximum light output available. If you are unfamiliar with the ratings on an 18650 battery, as a rule of thumb, the higher the mAh value the longer your flashlight will run. A battery's man rating refers to the capacity of the battery's cell, i.e. a 3400mAh battery will operate your flashlight longer than a 2300mAh battery.
Features:
18650 Li-ion Rechargeable Battery
2300mAh 3.7V 8.5Wh
Integrated battery overcharge / discharge protection circuits
High discharge performance Li-ion Rechargeable Battery
More than 500 charge-discharge cycles.
Nitecore D2 Charger:
Throw out all of your old battery chargers! Nitecore's D2 Digi-Charger is an all-in-one battery charger with brains. In addition to being smart, it is extremely versatile! Nitecore's D2 Digi-Charger works with almost all types of batteries including IMR, Li-Ion. Ni-MH, Ni-Cd, and LiFePO4. Like everything Nitecore makes, this charger is extremely high quality!
Crystalline Display Nitecore's D2 features a sleek crystalline LCD which displays charging progress, battery type, voltage and more! The high contrast white on black LCD makes reading battery data very easy.
Compatible: The D2 is even smart enough to recognize when there are different battery chemistry and sizes, and adjusts accordingly. That means you can charge a Li-Ion 18650 battery, and a Ni-MH AA battery at the same time!
Intelligence: The D2's integrated micro-controller automatically identifies battery types and selects the appropriate charging voltage and current. Then, it detects the battery's status and initiates the appropriate charging mode (CC, CV, or -dN/df).
IMR Safe Circuitry: Nitecore's D2 incorporates an optimized IMR charging system that is able to monitor the entire charging process ensuring the end voltage is always within safe limits, ultimately extending the battery's longevity.
Features:
Capable of charging 2 batteries simultaneously
Each of the two battery slots monitors and charges independently
Compatible with and identifies Li-ion (26650, 22650, 18650, 17670, 18490, 17500, 18350, 16340(RCR123), 14500, 10440), Ni-MH and Ni-Cd (AA, AAA, AAAA, C) rechargeable batteries
Optimized charging design for IMR batteries
Integrated LCD panel clearly displays charging parameters and progress
Two conveniently located side buttons allow easy selection of specific battery types and charging parameters
Intelligent circuitry detects the battery type and status before entering automatic charge mode (CC, CV, dV/dt)
Automatically detects battery power status and selects the appropriate voltage and charge mode (with the exception of LiFePO4 batteries which require manual selection)
Compatible with LiFePO4 batteries
Compatible with small capacity batteries
Automatically stops charging when complete
Features over-charge prevention to protect batteries
Features temperature monitoring to prevent overheating
Made from durable ABS (fire retardant / flame resistant)
Features reverse polarity protection
Designed for optimal heat dissipation
Certified by RoHS, CE, FCC and CEC
Insured worldwide by Ping An Insurance (Group) Company of China, Ltd.
Specifications:
Li-Ion / IMR / LiFePO4 Compatible Batteries: 26650, 22650, 18650, 18490, 18350, 17670, 17500, 16340(RCR123), 14500, 10440
Ni-MH / Ni-Cd Compatible Batteries: AA, AAA, AAAA, C
AC Voltage Input: 100-240V 50 / 60Hz
AC Current Input: 0.25A(MAX) 8W
DC Voltage Input: 12VDC
DC Current Input: 1A
Output Voltage: 4.2V _ 1% / 3.7V _ 1% / 1.48V _ 1%
Output Current: 0.5A*2
Please Note: No Batteries are included with this charger
the D2 Operation Manual
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Nitecore flash light and charger. 
