XTAR VX4 V2 Smart Battery Charger — 4‑Slot USB‑C Charger for AA/AAA & 3.6–3.7V Li‑ion with LCD Diagnostics and 0V Revival

The XTAR VX4 V2 is a four-slot smart battery charger and analyzer that charges, activates and accurately tests 1.2V/1.5V and 3.2V–3.7V cells with a clear LCD readout.

This compact, USB-C powered charger combines multi-chemistry recognition, a precise capacity-test mode and 0V activation to revive and evaluate rechargeable AA/AAA and various lithium cells. It’s designed for hobbyists, prosumers and gear owners who need reliable charging, visible diagnostics and safe fast charging for single or mixed battery types.

How does the VX4 V2 handle different battery chemistries?

The VX4 V2 automatically identifies and adapts to common battery types including Ni-MH/Ni-Cd, LiFePO4 and multiple Li-ion voltages. You can insert mixed cells; the charger assigns the correct algorithm per slot so each battery receives the appropriate charge profile.

• Auto-detects 1.2V Ni-MH/Ni-Cd and 1.5V lithium formats
• Supports 3.2V LiFePO4 and 3.6/3.7V Li-ion chemistry
• Manages mixed-slot charging safely with per-slot control
• Package does not include batteries

What diagnostic and display information does the LCD provide?

The high-contrast LCD shows real-time current, voltage, elapsed time and charging progress for each slot, helping you spot weak or mismatched cells quickly. The display also communicates capacity test results and charging mode so you can grade and group batteries for high-drain use.

• Per-slot voltage, current and time readouts
• Capacity measurement and health grading mode
• Clear icons for charging, discharging and full status
• Useful for sorting batteries by true capacity

Can the charger revive dead or over-discharged batteries?

Yes — the VX4 V2 includes XTAR’s 0V activation to attempt revival of deeply discharged lithium and Ni-MH cells that standard chargers ignore. Revival is conditional on the cell’s internal condition, but this feature can often restore otherwise unusable batteries and extend service life.

• 0V activation targets over-discharged cells
• Automatic safety cutoffs if a cell is unsafe to revive
• Multi-layer protection: reverse polarity, overcharge, temperature
• Protects your devices by filtering degraded cells before use

How fast and flexible is charging with the VX4 V2?

The charger offers intelligent current allocation and can deliver up to 2A into a single slot for faster recharge when needed. It uses a USB-C input for wide compatibility with modern power banks and adapters, making it a practical desktop or travel solution.

• Dynamic current distribution across four slots
• Up to 2A fast charge on individual slots
• USB-C power input for convenient charging sources
• Compact footprint with included USB-C cable and adapter

Who this charger is for: the XTAR VX4 V2 is ideal for camera shooters, RC hobbyists, outdoor device users, and tech enthusiasts who need precise battery information and reliable charging for assorted cells. If you sort, test or rely on rechargeable AA/AAA and lithium packs for demanding gear, this unit offers the diagnostic detail and safety features to keep batteries performing and prevent surprise failures.

• Package includes: XTAR VX4 V2 charger, USB-C cable, adapter, and manual — batteries not included.