"Cold doesn't kill batteries. It puts them to sleep."

Hey !

Most people find out their gear has a temperature rating the hard way, somewhere very cold and very far from home.
 

The aurora finally shows at 11pm outside Tromsø. You pull out your phone at 38%, open the camera, and the screen goes black. The battery isn't empty, it's frozen. Below 0°C, lithium cells can't move energy fast enough, so the voltage crashes and the phone shuts itself down.
 

Winter regulars know the trick of keeping the phone in an inner pocket, close to body heat.

But here's what almost everyone misses: your power bank is lithium too. Flip yours over and read the fine print.

The operating range on nearly every power bank starts at 0°C. On a ridge in Hokkaido at -15°C, it's a very expensive paperweight.
 

That's the exact problem the NITECORE Summit series was built for.

A thin heating film inside switches on automatically below 0°C and warms the cells from within, so it keeps working all the way down to -40°C. Even at -20°C you still get about 70% of the capacity, in conditions where an ordinary bank gives you nothing.
 

It comes in two sizes, both carbon fiber, both rain and snow sealed, and both under the 100Wh cabin limit so they fly with you:
 

• Summit 10000 ($229): 175g, about 2.3 full iPhone charges. Ski trips and day summits.
• Summit 20000 ($289): 315g, double the tank. Multi-day treks and aurora weeks.
   

Is $229 steep for a power bank? For Singapore use, honestly, yes. But nothing else out there heats itself, so at -20°C this isn't the premium option, it's the only one.

The math is simple: an aurora trip runs $3,000 and up in flights and tours, and the sky might only cooperate for 20 minutes all week.

A frozen phone means zero photos of the one thing you flew there for. $229 protects the entire point of the trip.
 

Heading below zero this year?

Grab the Summit 10000 or the Summit 20000 before you fly.

Code NC10 takes 10% off either one.
 

As promised, value in under a minute.

Sincerely,
Ming Jie
Nitecore Singapore
 

P.S. Me waiting for my phone to thaw on the cable car.

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