Graco 17C930 G20 Lithium-ion PowerPack Battery for Handheld Sprayers 20V Sprays up to 1 gal (3.781) with each charge Efficient 2.0 ah battery delivers maximum spray performance 30% lighter then previous 20V battery packs Can be recharged 3X more cycles than the previous generation battery No memory and virtually no self-discharge for maximum productivity