XTAR L4 Pro 4 Channel AA/AAA lithium & NiMh Smart Charger

Key Features

• Universal AA/AAA Smart Charging: Supports all rechargeable AA and AAA batteries in 1.5V lithium-ion and 1.2V Ni-MH chemistry across four independent slots, with automatic battery type detection and optimal charging strategy selection for each cell.
• HD LCD Display: Built-in HD LCD screen visualizes charging and discharging status in real time with battery level bar indicators, providing clear and intuitive charge monitoring for all four slots simultaneously.
• Multi-Stage NiMH Refresh Mode: Dual-mode refresh system — Quick Refresh and Smart Deep Refresh — eliminates memory effect, restores effective capacity, and extends battery service life for 1.2V Ni-MH cells.
• Micro-Current Activation for Over-Discharged Batteries: Advanced micro-current activation at 200mA revives deeply over-discharged batteries at higher recovery rates than standard activation methods, recovering cells that conventional chargers may fail to detect.
• Seven Built-In Safety Protections: Comprehensive protection suite including over-discharged battery activation, auto-stop after full charge, reverse polarity protection, over-current protection, over-voltage protection, over-charge protection, and short-circuit protection.

Overview

The XTAR L4 Pro is a smart four-slot AA/AAA battery charger engineered for both 1.5V lithium-ion and 1.2V Ni-MH rechargeable batteries. Building on the capability of the standard L4, the L4 Pro adds an HD LCD display for real-time charge status visualization, a multi-stage NiMH refresh system for capacity restoration and memory effect elimination, and micro-current activation at 200mA for improved recovery of deeply over-discharged batteries. Powered via USB-C at DC 5V 2A, the L4 Pro delivers independent 0.5A charging per slot with CVSA technology and four additional full-charge detection methods to ensure complete, accurate charge termination with minimal heat generation. The unit is constructed with fireproof ABS+PC/V0 housing, weighs 87g, and is compact enough for home and travel use. Compatibility extends across a wide range of 1.2V NiMH and 1.5V li-ion brands including XTAR, Eneloop, Energizer, EBL, Duracell, and others. Package includes the L4 Pro charger and a USB-C cable.

Applications / Uses

• Charging XTAR 1.5V li-ion AA and AAA rechargeable batteries and compatible third-party 1.5V li-ion AA/AAA cells
• Charging and refreshing 1.2V Ni-MH AA and AAA batteries from XTAR, Eneloop, Energizer, EBL, Duracell, and other compatible brands
• Restoring degraded NiMH batteries via multi-stage Quick Refresh or Smart Deep Refresh to recover usable capacity and extend service life
• Recovering deeply over-discharged AA and AAA batteries using micro-current activation that standard chargers cannot perform
• Home, office, and travel use powered by any standard USB-C 5V 2A power source

Specifications