Partly checked
Fortress Power ENVY 12kW + BigBattery 48V Eagle 2 32Ah
- Voltage matches: the 51.2 V battery suits this 48 V inverter.
- Can't check battery communication yet: the inverter's communication links aren't on file and the battery's communication links aren't on file.
Checked automatically against spec sheets. Not yet confirmed in a real install. Last checked 2026-10-14. We don't track firmware versions.
Size the battery cable and fuse for this pair in the build tool, from your run length.
Published limits, side by side
| Spec | Fortress Power ENVY 12kW | BigBattery 48V Eagle 2 32Ah |
|---|---|---|
| Voltage | 48 V accepts 40–60 V | 51.2 V |
| Current | Max battery current 250 A | Max charge 30 A Max output 60 A Peak output 200 A |
| Communication | None listed | None listed |
| Cable connection | Stud size Not published | Terminal M8 terminal |
Values come from each maker's documents. "Not published" means the maker doesn't state it.
Confirm with the makers before you buy
- Whether one battery can take the inverter's full current. The inverter's max battery current is 250 A. This battery is rated for 30 A charging and 60 A output. Ask how many batteries to run in parallel.
- Which firmware versions support this pairing. We don't track firmware.
- That your cable lugs fit the inverter's battery studs (Not published) and the battery's terminals (M8 terminal).
- How to install both safely, from each maker's manual and your local code.
This result checks two things: the battery's voltage suits the inverter, and the inverter maker lists this battery for closed-loop communication (the battery tells the inverter how to charge it). It doesn't check current limits, charge settings, firmware, cable sizes, or safe installation. Confirm those with both makers before you buy.
Sources
This result comes from the documents below. We haven't yet found an outside source that confirms it, such as a forum report or a video of a real install.
Where to buy
Fortress Power ENVY 12kW
- No store links yet. The maker's site is below.
- Fortress Power (maker)
BigBattery 48V Eagle 2 32Ah
- No store links yet. The maker's site is below.
- BigBattery (maker)
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