power bank - / paʊə bæŋk / -
noun
A safety fall back allowing you to recharge or replenish electronic devices when you're out on the mountain. These can be traditional batteries or rechargeable USB devices. Either way, super handy to have in cold conditions where battery life can be diminished. Good for transceivers, mobile phones, torches, cameras and the like.
\\ My GoPro is dead, any chance you're carrying a power bank?
Also known as:
power bar
additional power
