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ReaLoadREVIEWS
ReaLoad Engineering Benchmark

EcoFlow DELTA Pro Ultra (6kWh LiFePO4) vs. Pecron E3600LFP

Fuel Benchmark:
Elevation:

ReaLoad Technical Verdict & Engineering Dossier

Motor Surge & HVAC Starting

EcoFlow DELTA Pro Ultra (6kWh LiFePO4) delivers 10,800W surge, sufficient for a 3.5-Ton central A/C with soft-starter. Inverters under 7,500W surge will trip breaker overcurrent protection on direct compressor starts.

72-Hour Fuel Logistics

At 50% load over 72 hours, continuous gasoline generators consume ~56 gallons (11x 5-gallon cans). Direct utility Natural Gas hookup eliminates fuel storage degradation, winter freezing, and gas station queues.

NEC 250.20 Neutral Bonding

EcoFlow has factory floating neutral, safely compliant with 3-pole transfer switches and manual panel interlocks without ground loop faults.

Natural Gas Leader
EcoFlow DELTA Pro Ultra (6kWh LiFePO4)
7,200 W running on NG (+2200 W lead)
Acoustic Winner
EcoFlow DELTA Pro Ultra (6kWh LiFePO4)
30 dBA at 23ft (-5 dBA quieter)
Easiest Home Hookup
EcoFlow DELTA Pro Ultra (6kWh LiFePO4)
Floating Neutral (Home Interlock Ready)
Best $/Running Watt
Pecron E3600LFP
$0.34/W ($1,699)
Technical Specification
Enclosed Inverter
EcoFlow DELTA Pro Ultra (6kWh LiFePO4)
$5,799Read Review
Enclosed Inverter
Pecron E3600LFP
$1,699Read Review
Running Watts
Power Output
7,200 WBest
5,000 W
Peak Starting Surge
Power Output
10,800 WBest
6,250 W
240V Output Amps
Power Output
30 ABest
20.8 A
Sine Wave Purity
Power Quality
<1.2% THD (Pure Sine)Best
<1.5% THD (Pure Sine)
Fuel Burn (25%)
Fuel Consumption
0.00 GPH (Solar/Battery)Best
0.00 GPH (Solar/Battery)Best
Fuel Burn (50%)
Fuel Consumption
0.00 GPH (Solar/Battery)Best
0.00 GPH (Solar/Battery)Best
Runtime (25% Load)
Fuel Consumption
6 kWh CapacityBest
3.072 kWh Capacity
Fuel Tank Capacity
Fuel Consumption
No Tank (LiFePO4)Best
No Tank (LiFePO4)Best
14-50R 50A Outlet
Outlets & Receptacles
None (Use Adapter)Best
None (Use Adapter)Best
L14-30R 30A Outlet
Outlets & Receptacles
1x NEMA L14-30R (30A)Best
1x NEMA L14-30R (30A)Best
TT-30R RV Outlet
Outlets & Receptacles
1x NEMA TT-30R (RV)Best
1x NEMA TT-30R (RV)Best
5-20R Duplex Outlets
Outlets & Receptacles
4x NEMA 5-20R DuplexBest
4x NEMA 5-20R DuplexBest
Engine Start Method
Starting & Safety
Push-Button Instant UPS (0ms)
Push-Button Instant UPS (0ms)
Carbon Monoxide Sensor
Starting & Safety
Zero CO Emission (Safe Indoors)
Zero CO Emission (Safe Indoors)
Noise Level (23ft)
Acoustics & Physical
30 dBABest
35 dBA
Chassis Dimensions
Acoustics & Physical
27.2" L × 18.9" W × 25.6" H
22" L × 14.5" W × 16" H
Dry Weight
Acoustics & Physical
152.1 lbs
82 lbsBest
Neutral Bonding
NEC 2026 Hookup
Floating Neutral (Ready for Home Interlock)
Floating Neutral (Ready for Home Interlock)
Verified Street Price
Cost & Value
$5,799.00
$1,699.00Best