Of all the cop-outs for not returning a call, “My cell phone died” is perhaps the most overused.

Legit, sure. But that excuse doesn’t cut it — at least, not anymore.

SideWinder, a tiny, retro-looking windup device, charges cell phones without a power outlet. Instead, energy is produced by cranking a handle that’s attached to your cell phone. As far as portable chargers go, the SideWinder is light (2.5 ounces), reasonably priced ($25), and user-friendly (the various models fit most cell phones).

So next time you’re looking for an out, we suggest you find a better excuse. Or do yourself a favor. Try the truth. It can be rather liberating.

Available online at tkny.com.