If you've ever owned or wished you owned a Swiss Army knife, you know that more utility is always better. This Smart Battery can be used as a universal charger OR as an extended battery for a phone with a Third Rail case on it! First, the 1250 mAh rechargeable lithium polymer battery has a micro USB port, which allows charging when a data/charging cable is plugged in to a phone. The battery pack can also be attached to any Third Rail case and with the conducting metal tabs, act as an extra power source for your phone! Additionally, these Smart Batteries can be stacked which creates a more powerful energy hub! This stackable hub can charge multiple devices at the same time, so if you and your friends get the Smart Battery, you can charge your phones all at the same time, leaving the wall outlets open!

• 1250 mAh output
• Thin and light design (1.4 ounces) so you can take it anywhere
• Works with any Thrid Rail Case (not included)
• Powers devices via micro USB charging cable (included)
• Share the power with friends
• Check your power capacity with the push of a button
• Stack two or more to create a power hub or charge multiple devices at once
• Compatible with existing and future Third Rail products, eliminating the need to purchase new accessories with each new phone purchase
• Brand: Third Rail
• Color: Black