Uploaded April 2019 | Updated September 2026, 2 weeks ago

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In this video, I review and fully disassemble the NITECORE UM2 and UMS2 universal USB battery chargers, two of the most advanced and reliable options for charging Li-ion, IMR, NiMH, and NiCd batteries. Compatibility with popular battery types: Li-ion / IMR / LiFePO4: 10440, 14500, 16340 (RCR123), 18650, 21700, 26650, and more. NiMH / NiCd: AA, AAA, AAAA, C, D
Ideal for flashlight users, modders, hobbyists, and anyone needing a reliable dual-slot USB charger with advanced safety features.

Affiliate links:
Best chargers Genuine NITECORE UM2/UMS2:
Amazon:
UMS2: amzn.to/4jlVwQs
UMS4: amzn.to/3FQoVnt
UMS4 with AC adapter: amzn.to/4loKOun
Aliexpress:
UMS2/UMS4: https://alii.pub/7bn60a
Best Batteries:
eneloop AA: amzn.to/3YiGoLr
eneloop AAA: amzn.to/4cta8va
Amazon Basics AA: amzn.to/4i6mDOq
High quality Samsung 18650 Cells: https://alii.pub/7bn61n

Support my project:
via Amazon: amzn.to/3Kw6OFt
via PATREON: patreon.com/2013ElectronicsComputers

Monetize your Clicks and Downloads: publisher.linkvertise.com/ac/18339
youtu.be/MLxm3Sm8ZFg

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