XTAR L4 Pro charger: recharged AA and AAA batteries for your vintage handhelds

A Game Gear eats six AA batteries, a Game Boy four. Instead of buying disposable batteries again and again, this charger recharges one to four AA or AAA batteries at a time, Ni-MH 1.2 V as well as Li-ion 1.5 V. It recognises the battery type on its own, shows progress on an LCD screen and runs from a simple USB-C charger.

What it does

• 4 independent slots: charge 1, 2, 3 or 4 batteries, AA or AAA, and mix sizes and types.
• Automatic detection: the charger recognises Ni-MH 1.2 V and Li-ion 1.5 V batteries and applies the right charging method.
• Backlit LCD screen: battery type, charging progress, end of charge and error messages, slot by slot.
• Discharge and refresh modes: a long press on the button discharges a Ni-MH battery, or runs several cycles to revive a tired one.
• Rejects non-rechargeable batteries: an alkaline or incompatible battery triggers an error message instead of being charged.
• Protections: stops at end of charge, protection against overcharge, overvoltage, overcurrent, short circuit and reverse polarity.

What it does not do

• No wall adapter and no batteries are included: you need a USB charger of at least 5 V and 2 A; a phone charger will do.
• It does not charge alkaline batteries, 3.7 V Li-ion cells (14500, 18650) or LiFePO4: only AA and AAA Ni-MH 1.2 V and Li-ion 1.5 V.
• It is not a fast charger: 0.5 A per slot, not adjustable. Allow four to eight hours for Ni-MH batteries, depending on their capacity.
• Discharge and refresh only work with Ni-MH batteries, and a full refresh can take more than a day.
• It does not measure battery capacity: it is not a tester.
• Four slots only: the six batteries of a Game Gear take two charges.

Compatibility

Rechargeable AA and AAA batteries, Ni-MH 1.2 V or Li-ion 1.5 V. For consoles: Game Gear (6 AA batteries), Game Boy (4 AA), Game Boy Color and Game Boy Advance (2 AA), Game Boy Pocket (2 AAA), and any device running on AA or AAA batteries. See our Game Gear accessories and parts and our Game Boy accessories.

Getting started

Plug the USB-C cable into a 5 V 2 A USB charger, then insert the batteries the right way round: the charger recognises their type and starts charging. A long press on the button switches to discharge mode, then to refresh mode. No settings, no software.

In the box

• 1 XTAR L4 Pro charger (76 × 76.5 × 27.6 mm, 51 g)
• 1 USB-C to USB-A cable
• 1 multilingual manual

Wall adapter and batteries not included.

Delivery in 10 to 18 days · dispatched within 3 to 5 days · 2-year legal guarantee · 14-day returns.