4 modelsRiiO Sun II off-grid inverter
A transformer-based off-grid inverter with battery charger, MPPT solar controller and 4ms transfer switch, from 3kVA to 8kVA.

High-voltage MPPT controllers for 48V battery banks, with 600V or 900V solar input and up to 200A charging.
The SP600 and SP900 add high-voltage solar to a 48V system. They suit large arrays and DC-coupled systems built around TBB inverters such as the RiiO II, as well as earlier Tyrann and Matrix II systems.
| SP600-120 | 600V, 120A |
|---|---|
| SP900-200 | 900V, 200A |
| Model | Charge current | Max charge power | Max PV voltage | Max PV per tracker | Cooling | Protection | Weight |
|---|---|---|---|---|---|---|---|
| SP600-120 | 120A | 7000W | 600V | 8000W | Fan | IP21 | 7.8kg |
| SP900-200 | 200A | 11500W | 900V | 10000W | Natural | IP41 | 12kg |
| Battery voltage | 48V |
|---|---|
| Absorption / float (default) | 57.6V / 54.0V |
| Battery types | AGM, GEL, OPzV, lead-carbon, lithium |
| Battery temperature sensor | Included |
| Max efficiency | 97% (SP600), 98% (SP900) |
| MPPT trackers | 2 |
|---|---|
| MPPT range | 80–525V (SP600), 80–720V (SP900) |
| MPPT efficiency | Over 99.9% |
| Earth fault detection | PV array insulation resistance detection |
| Parallel | Up to 15 units |
|---|---|
| Communication | RS485 (SP600); RS485 and CAN (SP900) |
| Programmable relay | 1 |
| Standards | EN-IEC 62109-1, EN-IEC 62109-2 |
4 modelsA transformer-based off-grid inverter with battery charger, MPPT solar controller and 4ms transfer switch, from 3kVA to 8kVA.
5 modelsThe RiiO Sun II without the built-in solar charger: a transformer-based inverter charger for backup and off-grid systems, from 1kVA to 8kVA.
2 modelsA transformer-based 10kW or 15kW off-grid inverter with a built-in 600V or 900V MPPT solar controller, two AC inputs and two outputs.