01 — Best overall for a van
EcoFlow DELTA 3
1,024Wh that expands to 5kWh, with a published full AC recharge in 56 minutes and 500W of solar input.
A van build goes wrong in one of two ways: you buy too little and live rationing, or you buy a fixed system you cannot change. An expandable station avoids both — start at 1,024Wh, and add batteries to 5kWh when you know what you actually use.
The charge figures are what make it viable without shore power. 500W of solar input is more than most van roofs can physically carry, and the 56-minute AC recharge means a two-hour stop at a cafe with an outlet is a full battery.
The honest catch: X-Boost gets you 2,200W for resistive loads only, so the headline figure does not apply to a motor. And 27.6 lb per unit adds up quickly when you expand.
Skip it ifyou want a fixed 12V system with a lithium house bank. This is the modular answer.

#ad how this is funded · price as of November 7, 2026 · $699.00 17% off
| Specification | Published figure |
|---|---|
| Capacity | 1,024 Wh, expandable to 5 kWh |
| AC output | 1,800 W rated / 3,600 W surge |
| X-Boost | 2,400 W |
| Max solar input | 500 W |
| AC charge | 0-100% in 56 minutes |
| Cycle life | 4,000 cycles to 80%+ |
| UPS | Under 10 ms |
| Weight | 12.5 kg (27.6 lb) |
Source: EcoFlow — DELTA 3 series buying guide (model comparison table). These are the manufacturer's published figures, not ours — we have not tested this unit.





