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Victron Energy
Victron SmartSolar MPPT 250/70-Tr — 70A Solar Charge Controller with Bluetooth (12V/24V/36V/48V)
Victron SmartSolar MPPT 250/70-Tr — 70A Solar Charge Controller with Bluetooth (12V/24V/36V/48V)
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$502.35
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$502.35
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The Victron SmartSolar MPPT 250/70-Tr is the bigger sibling of the 250/60 — same 250V max PV input, but 70A of charge current instead of 60A. Sized for large 48V off-grid installations with residential panels in long series strings. Terminal-block ("Tr") connections for direct hard-wiring of heavy gauge cable. Built-in Bluetooth via VictronConnect.
Solar array sizing
| Battery bank | Maximum solar array | Typical setup |
|---|---|---|
| 12V | ~1000W | 3–4× 300W panels (rare config at 12V) |
| 24V | ~2000W | 6× 350W residential panels |
| 48V | ~4000W | 12× residential panels in 3 strings of 4 |
Maximum PV open-circuit voltage: 250V.
When to choose the 250/70 over the 250/60
- 4kW vs 3.4kW at 48V — about 17% more solar headroom at the same input voltage
- Future expansion — oversize the controller now and add panels later without replacing it
- Hot climate derate — controllers derate output above 40°C; a larger controller running cooler is more reliable
- Higher peak harvest — on perfect cold-clear days, more current capacity captures more energy
Why the SmartSolar 250/70-Tr
- 70A charge current — high output for large battery banks
- 250V max PV — long series strings of residential panels
- Terminal-block connections — thick cable, combiner-box installs
- Ultra-fast MPPT tracking — millisecond response to changing conditions
- Built-in Bluetooth — VictronConnect app on iPhone or Android
- 98% conversion efficiency — active fan cooling for sustained high output
- VE.Direct port — Cerbo GX integration, VRM Portal remote monitoring
- Automatic battery voltage detection — 12V, 24V, 36V, 48V
- Optional remote temp sensor — sold separately
Specifications
| Nominal battery voltage | 12V, 24V, 36V, or 48V (auto-detect) |
|---|---|
| Rated charge current | 70A |
| Maximum PV open-circuit voltage | 250V (absolute max) |
| Maximum PV input power, 12V | 1000W |
| Maximum PV input power, 24V | 2000W |
| Maximum PV input power, 48V | 4000W |
| Peak efficiency | 98% |
| Bluetooth | Built-in (VictronConnect app) |
| VE.Direct port | Yes |
| Connection style | Terminal block (Tr) |
| Cooling | Active fan |
| Operating temperature | -30°C to +60°C (full power up to 40°C) |
| Manufacturer SKU | SCC125070221 |
| Warranty | 5 years (manufacturer) |
Recommended applications
- Large off-grid homestead — 48V system with 3–4kW residential solar
- Commercial backup power — telecom shelter, server room, light industrial
- Marine megayacht — large house bank, comprehensive solar coverage
- Cold-climate solar — high-latitude installs with seasonal Voc variation
- Multi-controller installations — paralleled with other 250V controllers for 8kW+ arrays
Every Jonsson Tech order ships within 5 days nationwide from our Houston, Texas warehouse. Free pre-purchase string-sizing and array layout consultation — send us your panel datasheet and intended layout to support@jonssontech.net or call 346-574-9652.
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