100% brand new and high qualityMade of high quality material, durable and practical to useElectric Bicycle Ebike Dual Battery Connection Adapter Switcher Module Increase Battery CapacityThe Dual batteries connected in parallel for additional capacity and range, and the switcher can manage the two batteries on your bike. It will detect the voltage of the two batteries in real time. When one battery is exhausted during riding, it will automatically switch from one battery to the other, again for you Powered by the electric bicycle, or support two batteries to simultaneously supply power to your electric bicycle intelligently and balancedly.Do not confuse the positive and negative connectors on the dual battery switch. Make sure that the power of both batteries is turned off before connecting. The two battery's voltage need to be the same, and the battery's capacity can be differentType:20A version:5 x 4.5 x 1.9cm, 100gVoltage: 20V-72VConnector: XT60Wire length: 10cm 14AWG Silicone WireModel: Dual Battery Connection Adaptercolor:As shownMaterial:Aluminum alloyPackage Contents:1 x Dual Battery Connection Adapter(20A)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.