As part of the Ryobi 36V MAX POWER system of outdoor cordless tools for the garden, the Ryobi RY36BK17B-120 36V 2.0ah Lithium+ Battery & 1.7A Charger is perfect for Gardeners who demand more power and runtime to complete gardening tasks. Ideal for home owners with larger gardens or who need a Ryobi cordless solution with the power of petrol yet emission-free, less noise, no maintence or messy mixing. The innovative Ryobi MAX POWER Lithium+ battery technology gives more power, longer run-times and better durability for heavy-duty gardening and all with the convenience of cordless. 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.Using a 36V 2.0ah battery (included) with the Ryobi RY36LT33A-0, you can trim grass for up to 20 minutes on a single charge. Using the included charger, the Ryobi 36V MAX POWER™ 2.0ah Lithium + battery will charge from flat in 70 minutes.