SRNE MD1250 Dual DC to DC & MPPT Controller
Product Description
SRNE MD1250 50A Dual DC to DC Charger & MPPT Controller
Dual-Input Campervan & Marine Battery Charger UK
The SRNE MD1250 (MD1250N05) is a high-efficiency 50A dual-input DC-DC charger and MPPT solar charge controller engineered for 12V auxiliary/leisure battery systems. Designed for campervans, motorhomes, commercial vehicles, and marine vessels, it intelligently combines charging power from both your vehicle's alternator and solar panels. Fully compatible with Euro 6 smart alternators and all major battery chemistries (including LiFePO4 Lithium), it delivers up to 50A continuous charging current to keep your leisure battery bank topped up while driving or parked off-grid.
Why choose the SRNE MD1250 Dual DC-DC & MPPT Controller?
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Dual-Input Smart Charging: Simultaneously or independently charges your 12V leisure battery using vehicle alternator power while driving and solar energy when parked.
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High-Efficiency 50A Output: Delivers up to 50A maximum charging current to rapidly replenish high-capacity leisure battery banks.
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Euro 6 Smart Alternator Compatible: Integrated ignition sensing (IGN terminal) supports traditional alternators as well as modern Euro 5 and Euro 6 smart alternators without undercharging.
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Advanced MPPT Solar Technology: Integrated MPPT solar regulator achieves over 99% tracking efficiency to maximize energy harvest from connected solar panels.
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Multi-Chemistry & LiFePO4 Lithium Support: Pre-programmed multi-stage charging profiles for Lithium (LiFePO4), AGM, Gel, and flooded lead-acid batteries with 0V lithium wake-up activation.
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Starter Battery Maintenance Trickle Charging: Automatically trickle-charges the 12V starter battery from excess solar power once the leisure battery is fully charged.
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Built-In Bluetooth & App Connectivity: Integrated Bluetooth alongside RS485, CAN, and TTL ports for real-time monitoring and parameter adjustment via the SRNE mobile app.
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Ultra-Low Standby Draw & Fanless Cooling: Passive cooling design operates silently with ultra-low standby power consumption ($<0.6\text{W}$).
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Dedicated UK Support & National RMA Coverage: Direct access to Get Green Energy's UK-based technical support team with streamlined warranty backup and national RMA exchange services.
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Fast UK Delivery: Dispatched directly from Get Green Energy.
Technical Specifications & Dimensions
SRNE MD1250 Dual DC-DC & MPPT Controller (MD1250N05)
| Feature | Specification |
| Model / Part Number | SRNE MD1250 / MD1250N05 |
| Nominal Auxiliary/Leisure Battery Voltage | 12 V DC |
| Max. Charging Current | 50 A DC |
| Max. Recommended PV Input Power | 700 W (12V System) |
| Max. Solar PV Open Circuit Voltage (Voc) | 50 V DC |
| MPPT Tracking Efficiency | $>99\%$ |
| Alternator Input Voltage Range | Conventional: 13.2V–16V DC / Euro 6 Smart: 12V–16V DC |
| Charging Mode | Multi-stage (Buck / Boost) |
| Supported Battery Chemistries | Lithium (LiFePO4), AGM, Gel, Sealed/Flooded Lead-Acid |
| Standby Power Consumption | $<0.6\text{ W}$ |
| Operating Temperature Range | -35°C to +65°C |
| Ingress Protection Rating | IP32 |
| Communication Protocols | Built-in Bluetooth, TTL, RS485, CANbus |
| Unit Dimensions (L × W × H) | 221 mm × 175.8 mm × 92.4 mm |
| Unit Net Weight | 2.34 kg |
| Manufacturer Warranty | 2 Years |
Need Help Sizing or Installing Your Off-Grid Power Setup?
If you have questions about cable gauge selection, fusing, solar panel matching, or leisure battery setup, give us a call on 01684 642370 and our technical team will help you configure the perfect system.