Sprayers Plus Electric Backpack Sprayer Spray Power per charge: 3 hours continuously; or 100 gallons stream spraying; or 38 gallons mist spraying - Samsung 20V Lithium lon battery Features high quality Viton seals & gaskets Key Components, including O-rings & seals, are manufactured with high-end proprietary formulations designed by Sprayers-Plus for the Professional 100-series Battery charger included