DELTA2 + Extra Battery 2048Wh
2,048Wh nameplate capacity
Check current availabilityPrice and stock are shown by the retailer.Specs-based comparison
DELTA2 + Extra Battery vs DELTA 2 Max 2048Wh
Start with your largest appliance and required runtime. The specification differences below show which unit is the closer fit.
2026 specification snapshot
DELTA 2 Max 2048Wh
2,048Wh nameplate capacity
Check current availabilityPrice and stock are shown by the retailer.Quick verdict
The decision in one minute
This is a close specification match. Let weight, port selection, and charging compatibility decide the better fit.
Capacity leader: Tie Portability leader: DELTA 2 Max 2048Wh AC output leader: Tie
Specs-based comparison
A side-by-side reading of published specifications, limited to specification fields and calculated estimates.
| Specification | DELTA2 + Extra Battery 2048Wh | DELTA 2 Max 2048Wh | Specification edge |
|---|---|---|---|
| Battery capacity | 2,048Wh | 2,048Wh | Tie |
| Listed weight | 54 lbs | 50.71 lbs | DELTA 2 Max 2048Wh |
| Maximum solar input | 200W | 220W | DELTA 2 Max 2048Wh |
| AC output | 1800W | 1800W | Tie |
| Battery chemistry | LiFePO4 | LiFePO4 | Tie |
Which one should you buy?
Buy DELTA2 + Extra Battery 2048Wh if:
- you prefer the smaller-capacity power profile for shorter sessions
- its 200W solar-input specification suits your charging setup
Buy DELTA 2 Max 2048Wh if:
- you prefer the smaller-capacity power profile for shorter sessions
- lower listed weight (50.71 lbs) matters
Runtime estimate by use case
DELTA2 + Extra Battery 2048Wh: 2,048Wh is positioned here for extended backup and higher-energy use.
DELTA 2 Max 2048Wh: 2,048Wh is positioned here for extended backup and higher-energy use.
| Device scenario | DELTA2 + Extra Battery 2048Wh | DELTA 2 Max 2048Wh |
|---|---|---|
| Full-size refrigerator120W average planning load | ~14 hours | ~14 hours |
| Home office180W combined load | ~9.7 hours | ~9.7 hours |
| CPAP + router55W combined load | ~31 hours | ~31 hours |
| Television + lights140W combined load | ~12 hours | ~12 hours |
| Portable cooler45W average planning load | ~38 hours | ~38 hours |
Method: nameplate capacity x 0.85 / device watts. The 15% allowance represents typical conversion and system overhead for planning. Actual duration depends on load behavior, temperature, battery state, and power mode.
FAQ
Which is better for weekend travel?
DELTA 2 Max 2048Wh has the portability advantage by listed weight, while Tie provides more stored energy. Pick the constraint that matters most for this use case.
Which model is the stronger fit for longer outage coverage?
Tie has the larger published capacity. Confirm that its 1800W AC rating also covers the starting and continuous load of your appliance.
Can DELTA2 + Extra Battery 2048Wh run a refrigerator?
Its listed AC output is 1800W. If the refrigerator's running and startup demand stay below that limit, the planning estimate at a 60W average load is ~29 hours.
Can DELTA 2 Max 2048Wh run a CPAP overnight?
At a 40W planning load with the humidifier off, the estimate is ~43 hours. Heated tubing or a humidifier can materially increase consumption.
How are the runtime estimates calculated?
Each estimate uses 85% of the nameplate watt-hour capacity, then divides by the stated device load. It is planning math based on specifications, not a measured result.