Knowledge Base › External MPPT Controllers
Victron Energy SmartSolar MPPT 250/70
Official manufacturer global verified Sept. 2, 2026
Unresolved safety-relevant conflict
Two sources give different figures for a value on this product and nobody has resolved it. The specifications below are shown as recorded, but this product must not be treated as verified for engineering purposes until the conflict is closed.
Two sources give different figures for a value on this product and nobody has resolved it. The specifications below are shown as recorded, but this product must not be treated as verified for engineering purposes until the conflict is closed.
Identity
| category | external_mppt_controllers |
| ean | UNKNOWN |
| generation | UNKNOWN |
| manufacturer | Victron Energy B.V. |
| market_version | UNKNOWN |
| model | SmartSolar MPPT 250/70 |
| mpn | UNKNOWN |
| product_family | SmartSolar MPPT 150/60 up to 250/70 |
| product_status | active |
| region | global |
| release_year | UNKNOWN |
| sku | UNKNOWN |
| variant_note | Sold as -Tr (screw terminal) and -MC4 variants; they differ in PV terminal type, depth/height and part number but share the electrical specification. |
Electrical
| battery_voltage_auto_select | 12 / 24 / 48 V auto select; 36 V manual select |
| battery_voltage_options_v | [12, 24, 36, 48] |
| charge_algorithm | Multi-stage adaptive (eight pre-programmed algorithms) or user defined |
| charge_voltage_absorption_v | 14.4 / 28.8 / 43.2 / 57.6 V (adjustable) |
| charge_voltage_equalization_v | 16.2 / 32.4 / 48.6 / 64.8 V (adjustable); disabled by default |
| charge_voltage_float_v | 13.8 / 27.6 / 41.4 / 55.2 V (adjustable) |
| load_output_continuous_current_a | none - this model has no load output |
| max_charge_current_a | 70 |
| max_charge_current_locator | Datasheet 'Rated charge current'; manual 'Maximum battery current' |
| max_pv_current_per_mc4_connector_a | 30 |
| max_pv_current_per_mc4_connector_locator | 'max 30 A per MC4 conn.' - this is a per-connector limit, NOT the array short-circuit rating |
| max_pv_open_circuit_voltage_locator | Manual 'Max PV voltage (absolute)' = 250 V |
| max_pv_open_circuit_voltage_v | 250 |
| max_pv_power_locator | 'Nominal PV power, 12 V / 24 V / 36 V / 48 V' |
| max_pv_power_w_by_battery_voltage | {'12': 1000, '24': 2000, '36': 3000, '48': 4000} |
| max_pv_short_circuit_current_a | CONFLICT - see data_conflicts |
| max_pv_short_circuit_current_datasheet_a | 35 |
| max_pv_short_circuit_current_manual_a | 70 |
| mppt_operating_voltage_max_locator | Manual 'Max PV voltage (start-up/operating)' = 245 V |
| mppt_operating_voltage_max_v | 245 |
| mppt_operating_voltage_min_note | Manual footnote: minimum PV voltage is Vbat + 1 V after start; PV must exceed Vbat + 5 V to start |
| num_trackers | 1 |
| num_trackers_locator | Manual footnote 5: MC4 models may need splitter pairs; the MC4 connector pairs are internally parallel-connected to a single MPPT tracker |
| parallel_operation | Datasheet: 'Parallel operation: up to 10 units via Bluetooth'. Manual: 'Yes, but not synchronized'. |
| peak_efficiency_pct | 99 |
| self_consumption | less than 35 mA @ 12 V / less than 20 mA @ 48 V |
| temperature_compensation | -16 mV/degC / -32 mV/degC / -64 mV/degC |
Physical / mechanical
| bracket_dimensions_mm | UNKNOWN |
| depth_mm | 95 |
| dimensions_locator | 'Dimensions (h x w x d)': Tr 185 x 250 x 95 mm; MC4 215 x 250 x 95 mm |
| enclosure_material | UNKNOWN |
| height_mm | {'Tr': 185, 'MC4': 215} |
| housing_color | Blue (RAL 5012) |
| mounting_hole_diameter_mm | UNKNOWN |
| mounting_hole_spacing_mm | UNKNOWN |
| mounting_type | ['wall'] |
| power_terminals | PV: 35 mm2 / AWG2 (Tr) or 2 pairs of MC4 connectors (MC4). Battery: 35 mm2 / AWG2 |
| shipping_weight_kg | UNKNOWN |
| weight_kg | 3 |
| width_mm | 250 |
| wire_cross_section_mm2 | 35 mm2 / AWG2 (PV, Tr version, and battery) |
Installation
| altitude_derating_note | 5000m (full rated output up to 2000m) |
| indoor_outdoor | Indoor type 1, unconditioned |
| max_installation_altitude_m | 5000 |
| mounting_orientation | UNKNOWN |
Environment
| cooling_method | UNKNOWN (natural / passive convection per the product page: 'operates at 98% efficiency with natural cooling') |
| ip_rating | IP43 (electronic), IP22 (connection area) |
| max_altitude_m | 5000 |
| nema_rating | UNKNOWN |
| operating_temperature_c | -30 to +60 (full rated output up to 40) |
| pollution_degree | PD3 |
| relative_humidity | 95 %, non-condensing |
| storage_temperature_c | UNKNOWN |
Interfaces & connectors
| battery_terminal_type | screw terminal, 35 mm2 / AWG2 |
| bluetooth | Yes - built in. Manual: 'Data communication: VE.Direct port, Bluetooth via VictronConnect app' |
| ethernet | UNKNOWN |
| load_output | False |
| programmable_relay | True |
| pv_connector_type | Tr: screw terminal 35 mm2 / AWG2. MC4: 2 pairs of MC4 connectors |
| relay_outputs | 1 programmable relay - '4A up to 240Vac / 4A up to 35Vdc, 1A up to 60Vdc' (DPST) |
| remote_on_off | Yes, 2-pole terminal |
| rs485 | UNKNOWN |
| ve_can | False |
| ve_direct | Yes - VE.Direct port |
| wifi | UNKNOWN |
Protection
| over_temperature | Yes |
| over_voltage | UNKNOWN |
| pv_reverse_polarity | Yes |
| short_circuit | Output short circuit |
| under_voltage | UNKNOWN |
Certifications
| standards | ['EN/IEC 62109-1', 'UL 1741', 'CSA C22.2 NO.107.1-16'] |
Warranty & service
| summary | UNKNOWN (not quoted on the product page fetched this session) |
Documents
Recorded conflicts
electrical.max_pv_short_circuit_current_a Review required
35 — document[0]
70 — document[1]
Additional documented parameters
Recorded verbatim from the source; no schema field exists for these yet.
| 5) | MC4 models may require splitter pairs; maximum 30A per connector |
| Environmental condition | Indoor type 1, unconditioned |
| Parallel operation | Yes, but not synchronized (manual) / up to 10 units via Bluetooth (datasheet) |
| Pollution degree | PD3 |
| Stored trends | 46 days of voltage, current, temperature data |