EcoFlow DELTA Pro Ultra X
12288 Wh, 12000 W
FranklinWH aPower 2
Home battery · aPower. Specs from the manufacturer page (checked ).
The aPower 2 is a 15 kWh AC-coupled LFP home battery with 10 kW continuous output and 15 kW peak for 10 seconds. It can store solar and grid energy and keep heavy loads such as air conditioners and water heaters running during grid outages. Up to 15 units can be combined per aGate, for up to 225 kWh.
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Capacity
15000Wh
Continuous
10000W
Peak / surge
15000W
Chemistry
LiFePO4
Expandable
Yes
Weight
162kg
Warranty
15yr
Key features
- 15 kWh AC per unit; up to 15 units (225 kWh) per aGate
- 10 kW continuous output, 15 kW peak for 10 s
- Max 8 kW charge power
- Parallel AC-coupled connection with FranklinWH aPower S batteries
- Off-grid ready; designed to operate independently from the main grid
- Battery pack and inverter rated IP67; wiring IP56; enclosure Type 3R; indoor/outdoor
- Work modes: Self-Consumption, Time of Use, Emergency Backup; controlled via FranklinWH App
- 15-year or 60 MWh throughput warranty
What it is for
- home backup during grid outages
- storing solar power for homes
Specifications
| Capacity | 15000 Wh |
|---|---|
| Continuous output | 10000 W |
| Peak / surge | 15000 W |
| Expandable | Yes |
| Battery chemistry | LiFePO4 |
| AC output voltage | 120 / 240 V, 120 / 208 V, 60 Hz |
| Weight | 162 kg (357.1 lb) |
| Dimensions | 75.0 × 30.0 × 114.9 cm (29.5 × 11.8 × 45.2 in) |
| Warranty | 15 years |
From the FranklinWH page. Values the manufacturer does not publish are left out.
How long it runs common appliances
| Appliance | Watts | Runs? | Hours |
|---|---|---|---|
| Refrigerator (with freezer) | 120 W (600 start) | yes | 11.8 days |
| Chest freezer | 100 W (500 start) | yes | 16.5 days |
| CPAP (no humidifier) | 35 W (40 start) | yes | 14.1 days |
| Gas boiler (pump + controls) | 120 W (300 start) | yes | 8.3 days |
| Wi-Fi router + modem/ONU | 12 W | yes | 41.3 days |
| Starlink (standard dish) | 60 W (100 start) | yes | 8.3 days |
| TV 50" | 75 W | yes | 6.6 days |
| Sump pump 1/2 HP | 920 W (2150 start) | yes | 13 h |
| Well pump 1/2 HP | 880 W (2000 start) | yes | 14 h |
| Space heater 1500 W | 1500 W | yes | 11 h |
Assumes 88 % inverter efficiency, 90 % usable capacity and typical duty cycles. Build your own list in the calculator.
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On our lists
Connection and wiring
Follow the diagrams in the FranklinWH manual. Connecting to a home panel needs a transfer switch or interlock and a licensed electrician.
Error codes and troubleshooting
We found no error-code table in this manual. Its troubleshooting section is the reference.
FAQ
How long will the FranklinWH aPower 2 run a refrigerator?
About 283 hours for a typical 120 W refrigerator that runs 35 % of the time, after inverter and depth-of-discharge losses.
Can the FranklinWH aPower 2 start a sump pump or well pump?
Starting surge matters more than running watts: this unit is rated 15000 W peak. That covers a typical 1/2 HP sump pump (about 2150 W to start). Use the calculator with your exact pump.