The EcoFlow Delta Pro Ultra Extra Battery is a powerful and rechargeable extra battery specially developed for the EcoFlow Delta Pro Ultra Power Station. With a capacity of 6 kWh, it provides a reliable energy source for various devices and applications, ideal for use in emergencies or to reduce energy costs. This battery allows the power supply to be flexible and can be expanded to up to 30 kWh if required by connecting up to five units together. The modular design ensures easy installation and customisation without the need for special tools. The Delta Pro Ultra Extra Battery is therefore an excellent choice for anyone looking for a sustainable and independent energy supply. Expandable capacity from 6 kWh up to 30 kWh by connecting multiple units. Modular design for easy installation and customisation. Versatile charging options, including fast charging. Designed for use with the EcoFlow Delta Pro Power Station.