Not compatible
OutBack Power FX2012MT + SimpliPhi Power AmpliPHI 3.8
- Voltage doesn't match: the 51.2 V battery won't work with this 12 V inverter.
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 | OutBack Power FX2012MT | SimpliPhi Power AmpliPHI 3.8 |
|---|---|---|
| Voltage | 12 V accepts 10.5–17 V | 51.2 V |
| Current | Max battery current Not published | Max charge 37.5 A Max output 37.5 A Peak output 100 A |
| Communication | None listed | Sol-Ark closed loop |
| Cable connection | Stud size Not published | Terminal 3/8'' (10 mm) threaded stud |
Values come from each maker's documents. "Not published" means the maker doesn't state it.
Confirm with the makers before you buy
- Each product's current limits. One or both aren't published, so ask both makers.
- 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 (3/8'' (10 mm) threaded stud).
- 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
OutBack Power FX2012MT
- No store links yet. The maker's site is below.
- OutBack Power (maker)
SimpliPhi Power AmpliPHI 3.8
- No store links yet. The maker's site is below.
- SimpliPhi Power (maker)
Spot a mistake? Email errata@offgridstacks.com with this page's link.