What does the Carbine do in A Dark Room and how do I use it?

I picked two up at a fallen battlefield but can't seem to work out what they do and how to work them.

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Solution 1:

Timmy is correct. Carbine is a ranged weapon.

From the wiki

Carbine
type: ranged
damage: 8
cooldown: 1 seconds
use cost: 1 battery
creation cost: Cannot be created

Batteries are used as ammo for carbine.

Battery
weight: 0.1
trade cost: 10 Scales
production by armourer cost: 1 steel + 1 sulphur (per 10 sec)