If you want unlimited power for your Flow PRO, a replacement battery is the right choice for you. Our battery is equipped with 2,600 mAh and six lithium-ion cells and is one of the best batteries you can currently get on the market. It provides you with another 4-5 hours of treatment time. Premium lithium-ion battery 6 2,600 mAh battery cells Provides 4-5 hours of battery life Charging time only approx. 4 hours from 0-full One of the best batteries on the market Delivery time 2-3 days, plus shipping costs