Smartphone battery in a HP winter

Overview

Cold cuts lithium range. Keep the phone inside a jacket on Rohtang or Jalori, not on the dash.

• Inside the jacket
• Power bank
• No cafe USB

How to

20–80% charging is kinder. A 10,000 mAh pack in the bag beats a dead map at dusk.

Safety

Do not charge from unknown USB ports in cafes.