Battery charger Nitecore D2 — 2‑slot charger for AA/AAA/AAAA/C batteries, 100–240V input, 4.2V output, black

The Nitecore D2 is a compact 2-slot battery charger designed for home and travel use. It charges a range of common rechargeable cells including AA, AAA, AAAA and C sizes and supports multiple chemistries such as LiFePO4, Li‑ion, Ni‑Cd and Ni‑MH. The charger accepts 100–240V AC input (50/60Hz) and also supports DC input, delivering up to 4.2V output per slot. The device comes in a black housing and is intended for safe, straightforward charging of household rechargeable batteries.

Advantages

The Nitecore D2 offers a small footprint and two independent charging slots that accommodate different cell lengths simultaneously. Its multi-chemistry compatibility allows charging of LiFePO4, Li‑ion, Ni‑Cd and Ni‑MH cells, while the universal input voltage range (100–240V AC) and DC input support make it convenient for international travel or varied power sources. The fixed 4.2V output per slot provides the correct charging profile for compatible lithium-ion cells, and the simple black enclosure is durable and unobtrusive in domestic settings.

Suitable for

• Recharging AA and AAA rechargeable batteries used in remotes, toys and flashlights
• Charging AAAA and C batteries for small electronics and specialty devices
• Maintaining spare rechargeable cells for travel and everyday household use

Key specifications

• Number of slots: 2 independent charging slots
• Compatible battery sizes: AA, AAA, AAAA, C
• Supported chemistries: LiFePO4, Li‑ion, Ni‑Cd, Ni‑MH
• Input voltage: 100–240V AC, 50/60Hz; DC input supported
• Output per slot: 4.2V (suitable for compatible Li‑ion cells)
• Colour: Black

How to use

Insert batteries into the two slots observing correct polarity markings, making sure contacts are clean and cells are compatible with the stated chemistries and sizes. Connect the charger to an appropriate AC source within the 100–240V range or to a suitable DC power source. The charger delivers the specified output per slot and monitors charging according to the device's internal controls. Remove batteries once the charger indicates charging is complete or when cells reach their recommended voltage levels.

Recommendations

Use only rechargeable cells that match the charger’s supported chemistries and sizes. Avoid charging damaged or swollen batteries. Ensure the charging environment is dry and well ventilated and use the appropriate mains adapter or DC source for your region to match the 100–240V input range. For storage, remove batteries from the charger after charging completes.