Ideal for long periods of use & larger DIY projects, this 1.5 Ah battery powers all Ryobi One+ tools & is part of Ryobis new Lithium Ion battery range. The RB18L15 has Intelli Cell technology which monitors & balances individual cells to maximise run times, storage life & safety. The protection electronics & enhanced secure build ensures durability from overheating, damage & overloading.