The Nitecore Digicharger D2 is a fully automatic digital charging solution, carefully engineered to take the hassle out of battery management while delivering top‑level safety and performance. Designed with versatility in mind, this dual‑slot charger removes the need for multiple separate charging devices by offering broad compatibility with nearly all cylindrical rechargeable batteries on the market today.

Whether you are charging Lithium‑Ion (Li‑ion), Ni‑MH, Ni‑Cd, IMR, or LiFePO₄ batteries, the D2 provides a smooth and effortless "insert, detect, and charge" experience. At the heart of the device is an intelligent microprocessor that automatically identifies the chemistry of any battery you place inside. Once identified, the charger instantly selects the most appropriate charging mode – whether Constant Current (CC), Constant Voltage (CV), or dV/dt – to ensure that every charge cycle is both efficient and safe.

Key Features – In‑Depth Look

Dual Independent Charging Slots
The D2 is capable of charging two batteries at the same time. Each of the two slots is controlled by its own independent microcomputer, which means you can charge batteries of different sizes, different chemistries, and different capacities simultaneously without any cross‑slot interference. This feature is especially useful for users who work with a variety of battery types on a regular basis.
Intelligent Automatic Detection
The charger automatically detects Li‑ion, Ni‑MH, and Ni‑Cd batteries as soon as they are inserted. It then assesses each battery's current power status – including remaining voltage and overall condition – and selects the correct voltage and charging mode accordingly. For specialized LiFePO₄ batteries, which require a manual adjustment due to their different voltage characteristics, the D2 offers manual override options. These manual settings also come in handy for very small‑capacity cells, ensuring they charge safely without risk of overheating.
High‑Resolution LCD Display
Staying informed is easy with the built‑in high‑definition LCD screen. The display shows real‑time charging parameters for each slot individually. You can see at a glance the battery type, current voltage, charging current, elapsed charging time, and the percentage of charge completed. This level of detail gives you complete visibility into the charging process.
Optimized for IMR Batteries
IMR (Lithium Manganese) batteries are known for their high‑drain capabilities, and the D2 includes a charging program specifically optimized for these cells. This dedicated program ensures that IMR batteries are charged safely and efficiently, reducing wear and extending their usable lifespan.
Comprehensive Safety Protections
Safety is a top priority in the design of the D2. The charger is housed in durable, flame‑retardant ABS material, which adds an extra layer of protection in the unlikely event of a fault. In addition, multiple electronic protection systems work together to keep your batteries and charger safe:
- Overcharge Protection – Automatically stops charging as soon as a battery reaches full capacity, preventing damage from overcharging.
- Reverse Polarity Protection – If a battery is inserted incorrectly (backwards), the charger immediately cuts current to that slot and displays an error message on the screen.
- Temperature Monitoring – Built‑in thermal protection keeps an eye on internal temperatures and prevents overheating during the charging cycle.
- Charging Time Protection – This feature prevents batteries from being damaged by excessively long charging durations, automatically shutting down the process if a charge takes too long.

Technical Specifications

Input: AC 100‑240V, 50/60Hz (0.25A Max) or DC 12V 1A – works with standard household outlets worldwide as well as 12V DC power sources
Output Voltage: 4.2V ±1% for Li‑ion / 3.7V ±1% for LiFePO₄ / 1.48V ±1% for Ni‑MH and Ni‑Cd
Output Current: 500mA per channel (500mA x 2)

Compatible Battery Sizes

Li‑ion / IMR / LiFePO₄: 26650, 22650, 18650, 17670, 18490, 17500, 18350, 16340 (RCR123), 14500, 10440
Ni‑MH / Ni‑Cd: AA, AAA, AAAA, C

Physical Dimensions and Weight

Dimensions: 143mm (length) x 74mm (width) x 36mm (height)
Weight: 168g – this measurement excludes batteries and the power cord, making the charger itself very lightweight and portable

What's in the Box

When you open the package, you will find everything you need to begin charging right away:

1 x Nitecore Digicharger D2 Unit – the main charger
1 x AC Power Cable (Standard Regional Plug) – the appropriate power cord for your region
1 x User Manual – clear instructions for safe and effective operation

Important Reminder

For best results and to ensure your safety, always follow the manufacturer's instructions when using the Nitecore Digicharger D2. Please note that batteries are not included with this charger and must be purchased separately.

Nitecore Digicharger Battery Charger D2 EU