Key Features
- Universal AA/AAA Compatibility: One charger for all of your AA and AAA rechargeables — 1.5V li-ion and 1.2V NiMH cells in any combination across four independent slots, from multiple brands.
- 4 x 0.5A Independent Channel Charging: Four slots, each with its own 0.5A charging circuit — four XTAR 1.5V AA 4150mWh batteries fully charged in 2.9 hours, four 1.2V NiMH AA 2500mAh in about 6 hours.
- Auto Battery Detection with Smart Charging: Drop a battery in and the L4 figures out what it is and how to charge it best — TC-CC-CV for 1.5V li-ion, XTAR's proprietary method for NiMH — resulting in faster charges, lower temperatures, and cleaner cut-off.
- Six Built-In Safety Protections: Reverse polarity, over-current, over-voltage, over-charge, short-circuit, dry battery detection, and overtime charging protection are all built in — so you can plug in and walk away with confidence.
- Over-Discharged Battery Revival & LED Status Indicators: Brings over-discharged batteries back to life that other chargers would skip, with per-slot LED indicators keeping you informed throughout the entire charge cycle.
Overview
The XTAR L4 is the one charger you need if your household runs on AA and AAA rechargeables. It handles 1.5V li-ion and 1.2V NiMH cells across all four slots simultaneously — mix and match brands and chemistries without a second thought. Powered by USB-C at 5V 2A, it delivers independent 0.5A charging to each slot and automatically identifies the battery type upon insertion, selecting the right charging method for each cell. The TC-CC-CV approach for li-ion cells and XTAR's NiMH control technology both prioritize speed, precise termination, and lower heat compared to standard charging methods. It can also wake up over-discharged batteries that most chargers would refuse to touch. The hollow-out design helps dissipate heat and makes loading and unloading batteries quick and easy. Comes with a USB-A to USB-C cable and user manual.
Applications / Uses
- Charging XTAR 1.5V li-ion AA and AAA rechargeable batteries — compatible with the full XTAR 1.5V li-ion AA/AAA lineup
- Charging 1.2V Ni-MH AA and AAA rechargeable batteries from XTAR and other major brands
- Mixed chemistry charging — run 1.5V li-ion and 1.2V NiMH cells side by side in the same charge session
- Reviving over-discharged AA and AAA batteries back to usable capacity
- Home, travel, and field use from any USB-C 5V 2A power source — wall adapter, power bank, laptop, or car charger
Specifications
| Brand: | XTAR |
| Model: | L4 |
| Supported Battery Types: | 1.5V Li-ion AA/AAA and 1.2V Ni-MH AA/AAA |
| Number of Slots: | 4 |
| Power Input: | 5V 2A, USB-C port |
| Charging Current: | 0.5A x 4 (independent per slot) |
| Termination Current: | 100mA or less |
| Charging Time (Li-ion): | ~2.9 hrs for 4 x XTAR 1.5V AA 4150mWh |
| Charging Time (NiMH): | ~6 hrs for 4 x XTAR 1.2V AA 2500mAh |
| Charging Method (Li-ion): | TC-CC-CV |
| Charging Method (NiMH): | XTAR unique control technology |
| Auto Battery Detection: | Yes |
| Over-Discharged Battery Revival: | Yes |
| LED Indicators: | Yes — per slot charge status |
| Safety Features: | Reverse polarity, over-current, over-voltage, over-charge, short-circuit, dry battery detection, overtime charging protection |
| Operating Temperature: | 0°C to 40°C |
| Dimensions: | 76mm (L) x 76.5mm (W) x 27.6mm (H) |
| Weight: | 51g |
| Package Contents: | L4 charger, USB-A to USB-C cable, user manual |
| User Manual: | View User Manual |
⚠ Important Safety Warnings
Improper use of a battery charger can result in overcharging, short circuits, or damage to the battery, causing FIRE, EXPLOSION, or ELECTRICAL SHOCK. Users must follow all safety guidelines to ensure proper operation. Click here to review the full safety guidelines.
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Device Compatibility:
- Use the charger only for compatible battery types and sizes as specified by the charger manufacturer. Ensure the charger is appropriate for the battery chemistry, size, and protection status (e.g., unprotected or protected cells).
- Do not charge non-rechargeable batteries (e.g., alkaline or primary cells).
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Proper Use:
- Only charge batteries in a fireproof or non-flammable area. Avoid charging on beds, couches, or other flammable surfaces.
- Do not force a battery into the charger slot if it does not fit properly. This can damage the charger or battery and may result in unsafe charging conditions.
- Inspect batteries before charging: Do not charge if the battery casing, wrapper, or terminals are damaged, dented, leaking, or bulging.
- Never leave batteries unattended while charging. Monitor the charging process, and unplug the charger when charging is complete.
- Avoid exposing the charger to liquids, high heat, or direct sunlight.
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Inspection:
- Do not use the charger if the power cord, plug, or device is damaged.
- Inspect both the charger and the battery for any signs of damage before use.
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Storage & Handling:
- Keep the charger away from children and pets.
- When not in use, unplug the charger and store it in a cool, dry place.
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Prohibited Activities:
- Do not modify or disassemble the charger.
- Do not attempt to repair a damaged charger—replace it with a new one.
- Avoid using extension cords or adapters that exceed the manufacturer’s recommendations.
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Emergency Response:
- If the charger or battery emits smoke, sparks, or a burning smell, disconnect the power immediately and move the battery and charger to a safe area.
- In case of fire, use a Class D fire extinguisher or sand to extinguish the flames.
Disclaimer
IMR Batteries is not responsible for any damages, injuries, or claims arising from improper use, handling, or failure to follow these safety guidelines. Battery chargers must only be used with compatible battery types and operated in accordance with manufacturer instructions. It is the reseller's responsibility to ensure all safety warnings and product guidelines are effectively communicated to their customers. Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.