Silva USB Rechargable Bat 2,4Ah TRll is a lightweight rechargeable battery (2.4Ah). This water-resistant battery pack comes in a multi-attachment Velcro soft case that can be attached to the neck plate, belt or bike frame. The battery meets IPX5 standard: Water resistant; withstands heavy rain and water from any direction. The LED battery indicator ensures that you can keep track of how much power that remains in the battery while charging. The battery is easily charged via a micro USB cable and has a charging time of 4 hours.
Fits Trailrunner series 3 and 4 (even 2X).
Water resistant: IPX6