Uploaded July 2024 | Updated September 2026, 2 weeks ago

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In this video, I reviewed XTAR's VX4 charger, which is capable of charging and testing the capacities of Lithium Ion/LiFePo4 and 1.5V Lithium ion batteries. I also tested out XTAR's new 4Ah 18650 and 1.5V AAA Lithium Ion rechargeable batteries. Product links: XTAR VX4 charger: xtar.cc/product/xtar-visible-mixer-vx4-charger.html
XTAR 18650 4000mAh 10A Battery: xtar.cc/product/xtar-18650-4000mah-10a-battery.html
XTAR 1.5V AAA Lithium 1620mWh Battery: xtar.cc/product/xtar-aaa-lithium-1620mwh-battery.html

VX4 teardown: youtu.be/0jvun_yksnY
youtu.be/YBswjjv5Nqk
youtu.be/63dp6FEEwvg

00:00 Overview
03:04 Demonstration
06:45 Charging/capacity testing modes
09:22 Capacities of a few XTAR batteries
11:05 Maximum charging current
12:35 XTAR 4Ah battery high discharge rate testing
14:27 XTAR 1.5V AAA lithium iron battery thermal profile
17:44 Final thoughts