Svenirven 2 Packs 3.7V 18650 Flat top Battery 18650 Rechargeable Batteries for Headlamp, LED Flashli...

Our Experience

Upgraded from my old ones and these Svenirven batteries have been a solid choice. They're not the cheapest out there but they're definitely worth it - I've had them powering my daily driver headlamp for almost three weeks now with no signs of losing juice quickly.

What I really like about them is their flat top design, makes swapping batteries a breeze compared to button tops. They've been running consistently even after being exposed to chilly nights on camping trips.

One minor critique though, they're a tad larger in diameter than my old ones so they don't fit perfectly into some of my older devices. But hey, you can't have it all, right?