We all want better battery life for our smartphones, but until handset manufacturers begin adopting new energy technologies, we simply have to accept the boundaries that are imposed by today’s lithium-ion batteries. We can make our lives a little easier, however, by ensuring we always have a cable at the ready when our smartphones give up on us.

And what better way to do that than with the ChargeKey, a handy, pocket-sized micro USB cable that hangs off your keychain. For a limited time only, it’s just $24.99 thanks to Cult of Android Deals.

The ChargeKey is just like a regular micro USB cable, only it has been downsized so that it’s an ideal fit for your keychain. It has a regular USB connector at one end and a regular micro USB connector at the other, so it fits any Android-powered smartphone and any power adapter or PC.

By carrying your ChargeKey on your keychain, you ensure you always have a cable with you — wherever you go — without having to remember to pack one before you leave the house. It also ensures that you don’t have to dig around for wires in the bottom of your bag and then spend time untangling them before they can be used.

The ChargeKey is a must-have for anyone who needs a micro USB cable at all times, and thanks to Cult of Android Deals, it’s just $24.99 (13% off) for the next 7 days only. To get yours, just click the button below.