This mini jerry-can could be the savior to your poor smartphone battery with the capacity to provide enough power to last a 30-minute phone call.
Firebox, a retail site for tech and gadgets, has recently listed the handy smartphone charger called Fuel.
Measuring only 3.3cm x 2.3cm x 1.3cm it fits easily into your pocket for desperate times when you need more battery power.
Fuel can hold power for well over a month providing 20 to 30 minutes extra of talk time or a couple of hours standby time.
A USB cable is also not included, even though the battery itself charges via USB so you’ll have to purchase one separately.
In addition, there’s an on/off switch so you can reserve Fuel’s power.
Fuel is available now on the Firebox website for $41.59 (£25).