EcoFlow DELTA Max Smart Extra Battery (2016 Wh):- Even more capacity - Pair 2x Smart Batteries with the DELTA Max and reach a staggering 6048Wh capacity, giving you the option of more power for longer.Intelligent charging - Looking to recharge your Smart Battery? Connect your additional battery to DELTA Max whilst it´s charging and add juice to your Smart Battery simultaneously.Be two steps ahead - The front of the device is equipped with a smart LCD screen. This gives you real-time data on output and input levels, remaining battery life and the time left before recharge is needed.Specifications: - Net Weight: Approx. 18 kg - Dimension: 46,4 x 23,5 x 28,3 cm- Charge Temperature: 0 to 45°C ± 3°C- Discharge Temperature: -20 to 45°C ± 3°C- Capacity: 2016 Wh- Cycle Life: 800 Cycles to 80%+ capacity- Management Systems: BMS, Over Voltage Protection, Overload Protection, Over Temperature Protection, Short Circuit Protection, Low Temperature Protection, Low Voltage Protection, Overcurrent Protection- Extra Battery Port Input: 50.4V, 1800W Max (X-Stream and solar dual charging)- Extra Battery Port Output: 43V-58.4V 3200W MaxTechnical Data:- Battery Type: Lithium-Ion- Charging Indicator: YesEnergy Supply:- Charging via solar cells: Optional- Charging via 12V connection: Yes