Specs-based comparison

DELTA Pro 3072Wh vs Apex 300 2764.8Wh

These two models serve different priorities. The comparison below turns their published numbers into practical buying choices.

2026 specification snapshot

Quick verdict

The decision in one minute

The capacities are relatively close, so AC output is the sharper separator: Apex 300 2764.8Wh supports the larger published load.

Capacity leader: DELTA Pro 3072Wh   Portability leader: Apex 300 2764.8Wh   AC output leader: Apex 300 2764.8Wh

Specs-based comparison

A side-by-side reading of published specifications, limited to specification fields and calculated estimates.

Core specifications that affect fit and runtime
SpecificationDELTA Pro 3072WhApex 300 2764.8WhSpecification edge
Battery capacity3,072Wh2764.8WhDELTA Pro 3072Wh
Listed weight99 lbs83.8 lbsApex 300 2764.8Wh
Maximum solar input400W100WDELTA Pro 3072Wh
AC output3600W3840WApex 300 2764.8Wh
Battery chemistryLiFePO4LiFePO4Tie

Which one should you buy?

Buy DELTA Pro 3072Wh if:

  • you want the larger 3,072Wh capacity
  • its 400W solar-input specification suits your charging setup
View DELTA Pro 3072Wh

Buy Apex 300 2764.8Wh if:

  • you prefer the smaller-capacity power profile for shorter sessions
  • lower listed weight (83.8 lbs) matters
  • you need the higher listed AC output (3840W)
View Apex 300 2764.8Wh

Runtime estimate by use case

DELTA Pro 3072Wh: 3,072Wh is positioned here for extended backup and higher-energy use.
Apex 300 2764.8Wh: 2764.8Wh is positioned here for extended backup and higher-energy use.
Calculated planning estimates
Device scenarioDELTA Pro 3072WhApex 300 2764.8Wh
Full-size refrigerator120W average planning load~21 hours~19 hours
Home office180W combined load~14 hours~13 hours
CPAP + router55W combined load~47 hours~42 hours
Television + lights140W combined load~18 hours~16 hours
Portable cooler45W average planning load~58 hours~52 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 Apex 300 2764.8Wh run a CPAP overnight?

At a 40W planning load with the humidifier off, the estimate is ~58 hours. Heated tubing or a humidifier can materially increase consumption.

Can DELTA Pro 3072Wh run a refrigerator?

Its listed AC output is 3600W. If the refrigerator's running and startup demand stay below that limit, the planning estimate at a 60W average load is ~43 hours.

Which model is the stronger fit for multi-device camp use?

DELTA Pro 3072Wh has the larger published capacity. Confirm that its 3600W AC rating also covers the starting and continuous load of your appliance.

Which is better for short outage essentials?

Apex 300 2764.8Wh has the portability advantage by listed weight, while DELTA Pro 3072Wh provides more stored energy. Pick the constraint that matters most for this use case.

Editorial basis: Published product specifications and transparent arithmetic. Verify ports, bundled accessories, charging limits, and appliance startup requirements on the current retailer or manufacturer listing before purchase.