The Bosch 4A Standard Charger gets your eBike battery up and running in a matter of hours. It takes about 4.5 hours to charge the PowerPack or PowerTube 500 and is compatible with other PowerPack and PowerTube models. This charger has a ventless hosing unit which keeps dirt and dust away. Get your eBike to full charge with the Bosch 4A Charger.