Ideal for DIYers and hobbyists who want to power their first Ryobi ONE+™ tool or add more batteries to their system with increased runtimes. 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.