Partly checked
Victron Energy MultiPlus-II 48/8000/110-100 230V + BigBattery 48V ETHOS FETHS-48051-G1
- 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.
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 | Victron Energy MultiPlus-II 48/8000/110-100 230V | BigBattery 48V ETHOS FETHS-48051-G1 |
|---|---|---|
| Voltage | 48 V accepts 38–66 V | 51.2 V |
| Current | Max battery current Not published | Max charge 200 A Max output 100 A Peak output 300 A |
| Communication | None listed | EG4 hybrid closed loopGrowatt SPF/SPE closed loopOpen loop (no comms) |
| Cable connection | Stud size M8 | Terminal Not published |
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 (M8) and the battery's terminals (Not published).
- 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
Victron Energy MultiPlus-II 48/8000/110-100 230V
- No store links yet. The maker's site is below.
- Victron Energy (maker)
BigBattery 48V ETHOS FETHS-48051-G1
- No store links yet. The maker's site is below.
- BigBattery (maker)
Spot a mistake? Email errata@offgridstacks.com with this page's link.