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 3 Classic 1024Wh
The useful question is not which battery is bigger, but which power profile fits the way you plan to use it.
2026 specification snapshot
DELTA 3 Classic 1024Wh +400W Panel
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 3 Classic 1024Wh +400W Panel 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 3 Classic 1024Wh +400W Panel | Specification edge |
|---|---|---|---|
| Battery capacity | 2,048Wh | 2,048Wh | Tie |
| Listed weight | 54 lbs | 35.3 lbs | DELTA 3 Classic 1024Wh +400W Panel |
| Maximum solar input | 200W | 400W | DELTA 3 Classic 1024Wh +400W Panel |
| 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 3 Classic 1024Wh +400W Panel if:
- you prefer the smaller-capacity power profile for shorter sessions
- lower listed weight (35.3 lbs) matters
Runtime estimate by use case
DELTA2 + Extra Battery 2048Wh: 2,048Wh is positioned here for extended backup and higher-energy use.
DELTA 3 Classic 1024Wh +400W Panel: 2,048Wh is positioned here for extended backup and higher-energy use.
| Device scenario | DELTA2 + Extra Battery 2048Wh | DELTA 3 Classic 1024Wh +400W Panel |
|---|---|---|
| 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
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.
Can DELTA 3 Classic 1024Wh +400W Panel 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.
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.
Which model is the stronger fit for refrigerator and router support?
Tie has the larger published capacity. Confirm that its 1800W AC rating also covers the starting and continuous load of your appliance.
Which is better for a compact camp setup?
DELTA 3 Classic 1024Wh +400W Panel has the portability advantage by listed weight, while Tie provides more stored energy. Pick the constraint that matters most for this use case.