The new sodium-ion flashlight aims to solve a problem most winter adventurers know all too well flashlights dying in extreme cold.
Sodium-ion flashlight survives –40°C with nearly full runtime
Lithium batteries tend to give up once the mercury drops. Their voltage plummets in the cold, slashing battery life and reducing reliability. That’s where the sodium-ion flashlight steps in. According to the manufacturer, its custom battery retains 88% of its normal runtime at –40°C. For comparison, standard lithium batteries drop to around 15% in the same conditions.
This cold-weather resilience could make it a go-to choice for climbers, winter campers, or anyone who’s had to fumble with a dead flashlight in freezing air.
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A rugged flashlight that doubles as a power bank
Inside, there’s a proprietary 10,000mAh sodium-ion battery. It’s swappable, but the company says you won’t need to replace it for a while. They claim the cell can survive up to 3,000 charge cycles. Even storing it empty reportedly won’t cause damage.
The flashlight also works as a backup power source thanks to two ports:
- USB-C input charges the internal battery at 10 watts
- USB-A output provides 5 watts to other devices
This dual-purpose design adds real utility for outdoor use or emergency kits.
Sodium-ion flashlight offers serious brightness
The LED inside produces up to 2,500 lumens and consumes 25 watts. That’s strong enough for nighttime hiking, search efforts, or lighting up large areas.
It also features an adjustable beam and color temperature. You can shift between 6,000K and 8,000K, depending on the situation.
Size and build lean toward durability
At roughly 10.7 × 2.0 × 1.5 inches and 22.6 oz, the device isn’t small. Still, it’s built to handle rough conditions. An IP44 rating protects it from rain and splashes, though it’s not meant for full submersion.
Its large size is offset by better thermal performance, higher capacity, and better utility.
Crowdfunding begins with early backer discount
The sodium-ion flashlight is now live on Kickstarter. Super Early Bird pricing starts at $56, but that will rise to $85 later. Shipping and import fees aren’t included, and deliveries are scheduled for March 2026.
As with all crowdfunded tech, delays or changes are possible. Still, if it ships as promised, this might be one of the most cold-proof flashlights to hit the market.
