Enjoy up to four charging ports when using the Battery Charging Hub with the Car Charger or Battery Charger.
The Battery Charging Hub enhances efficiency by charging batteries in sequence according to their remaining power level, with more fully-charged batteries receiving power first. 
The foldable design makes it easy to take the Battery Charging Hub along wherever you go.

Charge up to four batteries at once
Foldable and portable design

The Charging Hub serves as an extended accessory, which can only be used with designated charging devices.

Battery Charging Hub × 1

Operating Temperature: 5℃-40℃
Input: 17.6 V, 0-5.7 A
Output: 17.6 V，3.41 A or 17.0 V，3.53 A
Charging Time: About 1.5 hours for each battery (depending on temperature).