Knog PWR Charging Dock with Medium Battery, 2 Year Warranty The PWR Dock is the perfect way to keep your PWR bank(s) fully charged and ready to go Its also compatible with every Knog PWR battery, so you can shop the full range with confidence from flashlights to bike lights The PWR Dock can charge our smaller batteries at the same time (PWR Seeker, PWR Commuter, PWR Rider & the small PWR Bank) However, when charging medium or large PWR Banks simultaneously, PWR Dock will charge the battery in the RH socket first (logo and LED at the front of the dock looking from above) before moving on to charge the PWR Bank in the LH socket This option comes supplied with a medium (5,000 mAh) PWR bank