Battery charger XTAR BC4 for AA/AAA NiMH and Li-ion, 4-slot, DC/USB input, black

The XTAR BC4 Battery Charger for R03 AAA R6 AA Li-ion NiMH USB is a compact, four‑slot charger designed for household and portable use. Compatible with standard AA (R6) and AAA (R03) rechargeable cells in NiMH and Li‑ion chemistries, it accepts USB power input for versatile charging from power banks, USB adapters or computers. Its compact footprint (80 mm × 75 mm × 27 mm) and black finish make it suitable for storage in toolboxes, backpacks, or drawers while providing straightforward charging of up to four batteries simultaneously.

Advantages

The charger supports four batteries at once, reducing wait time when multiple cells need charging. USB power compatibility increases flexibility: connect to common USB ports or portable power sources without requiring a dedicated mains adapter. The compact dimensions allow easy transport and discreet storage. Compatibility with both AA and AAA sizes and with NiMH and Li‑ion chemistries covers most consumer rechargeable battery needs, simplifying battery management for household devices, remotes, toys, and flashlights.

Suitable for

• Charging AA rechargeable batteries used in toys, game controllers and remote controls
• Charging AAA rechargeable batteries for small electronics, remote controls and sensors
• Maintaining a set of spare batteries for household and outdoor equipment
• Using with USB power banks or laptop USB ports when mains power is unavailable

Key specifications

• Supported battery count: 4 slots
• Compatible battery sizes: AA (R6) and AAA (R03)
• Supported chemistries: NiMH and Li‑ion rechargeable cells
• Power input: USB (standard USB power source required)
• Product colour: Black
• Dimensions (W × D × H): 80 mm × 75 mm × 27 mm

How to use

Insert batteries into the four slots following the polarity markings on the charger. Connect the charger to a suitable USB power source using an appropriate USB cable. Charging status indicators (if present) will show progress; leave batteries in place until fully charged. After charging completes, disconnect the USB cable and remove the batteries. Do not force cells into slots and ensure correct orientation to avoid improper charging.

Recommendations

Use a stable USB power source that provides sufficient output for multi‑slot charging, avoid unreliable or damaged cables, and charge batteries at room temperature. Store the charger in a dry place when not in use and inspect batteries for damage before charging. For long battery life, follow manufacturer guidance for the specific rechargeable cells in use and avoid deep discharges when possible.