Electric car maker Tesla has released a power bank that can charge Android phone or iPhone on the go. The device, priced at $45, comes with USB, micro USB and Apple lightning connections. It uses a single 18650 cell with 3,350mAh capacity that's also found in its Model S and X electric vehicles, Engadget.com reported on Saturday. Watch: India's 1st Tech And Auto Show Awards 2017 | Vote And Win a Smartphone It was designed after Tesla Design Studio's Supercharger monument and wouldn't look out of place inside one of the EV-maker's cars, Engadget.com reported. The portable battery is currently listed as sold out on the company's website. The company has recently launched an electric semi truck and a new Roadster.