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The DELTA 3 Max range is built around higher continuous output and expandable storage, with the Max Plus stepping up power delivery further than the standard Max. Depending on which model you choose, output, charging speed, and available accessories will differ. The features below cover what to weigh up between the two models in this range.
The DELTA 3 Max delivers 2.4kW of continuous AC output, while the DELTA 3 Max Plus increases this to 3kW, both from the same 2048Wh battery capacity. This gives you a choice between a lower output model suited to typical home appliances and a higher output option built for running several demanding devices at once. Deciding between the two comes down to whether your household or worksite regularly needs more than 2.4kW at a time.
The DELTA 3 Max range supports several charging methods, including AC, solar, an alternator charger and a compatible smart generator, alongside the option to combine sources for faster charging. This range of methods means the unit can recharge whether you are at home, travelling or set up off-grid with solar panels. Charging speed will vary depending on which method and input wattage you use at the time.
Both models start at 2048Wh, with the option to expand capacity up to 10kWh using compatible extra batteries. This expandable design lets you begin with a single unit and add storage later as your power needs grow, rather than needing to replace the system outright. It suits households planning for longer outages or wanting extended runtime for equipment used over several days.
Through the EcoFlow app, selected models support features such as Storm Guard Mode, which monitors severe weather alerts and automatically begins charging ahead of a storm. The app also allows you to set output priorities, so essential appliances stay powered while less critical loads are reduced during an outage. This level of app-based control suits anyone treating the DELTA 3 Max as part of a planned home backup strategy rather than an occasional power source.
The DELTA 3 Max range uses full-tab LFP battery cells, built to automotive-grade standards and rated for around 10 years of reliable use. Quiet operation, with noise levels as low as 25 decibels at moderate output, means the unit can run as backup power without becoming disruptive indoors. A protective internal structure also helps guard against condensation and knocks during transport, which matters if the unit moves between home, vehicle and worksite regularly.
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