This battery pack has 2 outputs: 1x 5V USB output for phone charging and 1x 12V DC output which is also a 12V charging input. It comes built in with a 3P2S 18650 battery setup. Comes with a 12V battery charger.
12V power for lighting, horn and bluetooth speakers and, 5V USB output for charging cell phones. Fits all types of bicycles, ebikes and e-scooter handlebars.