As part of the Ryobi 18V ONE+™ system of over 200 cordless tools for the home, garden, automotive, crafting and much more, the Ryobi 18V ONE+™ RC18240-2C40L Dual Port Charger Kit (2x4ah) is ideal for charging any two Ryobi 18V ONE+™ Lithium batteries simultaneously.Designed to be compact and compatible with all Ryobi 18V ONE+™ lithium batteries whilst also being fast and intelligent. Ensuring convenience, it is compatible with all Ryobi 18V ONE+™ Lithium batteries and even allows users to charge two batteries at the same time. This battery charger is capable of charging a single battery at a rate of 4Amps/hour or two batteries simultaneously at 2Amps/hour each. Featuring LED indicator lights, users can easily identify battery charge status. Incorporating an Energy Save Mode which conserves energy when not charging or maintaining batteries. To maximize workspace, the wall mount capability ensures organisation in any working environment. The innovative Ryobi Lithium+ battery technology gives more power, longer run-times and better durability than previous lithium batteries. Featuring IntelliCell™ technology which monitors and balances individual cells to maximise run-times, storage life and safety. Incorporating a 4-stage fuel gauge which displays the remaining power (100%, 75%, 50%, 25%). The tough pack design with built in impact protection ensures long term durability.This battery charger is compatible with all Ryobi 18V ONE+™ lithium battery packs and is supplied with 2x RB1840X 18V ONE+™ 4ah Lithium+ Compact Batteries. Both batteries can be charged simultaneously in 120mins or singly in 60mins.