FlexTail Power Bank Review 2026: Worth Buying?
Power banks rarely excite anyone. Most feel like bricks you resent carrying. Then FlexTail dropped the Zero Power 10,000C and started calling it the lightest and thinnest 10,000mAh battery on the planet. That claim deserves a real test. I carried this thing on day hikes, a two night backpacking trip, one long airport day, and…