XTAR VX2 Pro Visible Mixer 1.5V/3.6V/3.7V Li-Ion& 3.2V LiFePO4& 1.2V Ni-MH Batteries Charger and Battery Capacity Tester
SKU: VX2 Pro KT
The VX2 Pro is a dual-slot smart charger with independent control Compatible with 10400-32650 3.6/3.7V Li-ion, AA/AAA 1.5V Li-ion, AA/AAA 1.2V Ni-MH, and 3.2V LiFePO₄ batteries. It supports PD, QC, and 5V input via Type-C, and offers charging, discharging, refreshing, capacity grading, and storage—delivering pro-level performance at an accessible price.
Q1: Can the charger charge and discharge simultaneously, and can different current settings be applied to different battery slots? A: Yes, the channels operate completely independently. You can set different charging currents for each slot based on the battery capacity, or assign different functions to each slot — for example, capacity testing in one slot and reconditioning in the other.
Q2: What is the suitable charging current for batteries with different capacities? A: When customizing the charging speed for different battery types and capacities, please follow the recommended C-rate guidelines: Charging Current = Capacity × C-rate
3.6V Li-ion batteries: 0.5C
3.2V LiFePO4 batteries: 0.2C–0.5C
Ni-MH batteries: 0.1C–0.3C (Note: VX2 Pro charges Ni-MH batteries at a fixed 0.5A, which is approximately 0.2C for AA batteries.) Q3: Which power adapter is recommended for fast charging? A: We recommend using a PD20 adapter (20W, with PD 12V protocol) to achieve the following maximum output: 3A × 1 channel or 2A × 2 channels or 1A × 2 channels
With an 18W adapter: 1.6A × 2 channels
With a 5V/2A adapter: 2A × 1 channel or 1A × 2 channels
Q4: What happens if the charger misidentifies a 3.6V Li-ion battery as a 3.2V LiFePO4 battery or vice versa? A: Ni-MH and 1.5V Li-ion batteries are not affected. However:
A 3.6V Li-ion battery charged in LiFePO4 mode will not be fully charged.
A 3.2V LiFePO4 battery charged in standard mode may be overcharged. Always double-check the charging mode when using LiFePO4 batteries.
Q5: What is the memory function of the charger? A: The charger has a built-in memory function that retains the selected mode even after power loss. For example, if you manually select LiFePO4 mode (with any additional function), the charger will still be in LiFePO4 mode after restarting. Be sure to adjust the mode when switching between 3.6V and 3.2V batteries.
Q6: What are the differences between Capacity Test, Storage, and Reconditioning modes? A:
Capacity Test: Involves three stages — charge, discharge, and recharge. This process takes a relatively long time.
Storage Mode: Charges or discharges the battery to a storage voltage (applies to 3.6V/3.2V/1.2V batteries). The closer the battery is to the storage voltage, the less time it takes. For 1.5V Li-ion batteries, the process includes discharge-charge-discharge and takes over 10 hours.
Reconditioning Mode: Involves discharge-charge cycles (up to 4 times, depending on battery condition). Older or weaker batteries may require more time.
