Description
The Magnum Energy MS2812 is a 2,800W 12V pure sine wave inverter/charger built for mobile, backup, off-grid, RV, marine, and emergency vehicle applications requiring reliable utility-grade power and an integrated Power Factor Corrected battery charger in a single rugged unit.
Key Features
- Pure Sine Wave Output Delivers utility-grade 120Vac pure sine wave power at 60Hz ±0.1Hz with less than 5% THD, suitable for sensitive electronics, medical equipment, and variable-speed motor loads.
- Power Factor Corrected Charger Integrated PFC charger draws 25–30% less AC current from a generator than conventional chargers, with 125A continuous DC output at 25°C and a power factor above 0.95.
- Five-Stage Battery Charging Bulk, Absorb, Float, Equalize (via remote), and Battery Saver stages maximize battery life and health, with support for LFP, Gel, Flooded, AGM1, and AGM2 battery profile presets.
- 60A Transfer Relay Dual-input 60A transfer relay capability allows seamless switching between shore power or generator and inverter output, with a minimum 16ms AC relay transfer time.
- Versatile Mounting & Wiring Shelf, bulkhead, or inverted mounting options combined with an extra-large AC terminal block and 360° DC connection terminals with covers simplify installation in tight spaces.
The MS2812 delivers 2,800W continuous output from a 12V battery bank (9–16.8Vdc range) with a peak inverter efficiency of 90%, a 5-second surge capacity of 3,900W, and a maximum continuous input current of 373ADC. No-load power consumption is just 30W while inverting and under 8W in search mode.
Certified ETL Listed to UL/cUL 458 for mobile use and meeting KKK-A-1822E emergency vehicle standards, the MS2812 is built for demanding field deployment. Corrosion protection includes conformal-coated PCBs, powder-coated chassis, and stainless steel fasteners throughout, with dual 92mm variable-speed brushless DC fans providing 0–120 cfm of internal cooling.
RS485 communication port, remote port, and battery temperature compensation are all standard, with optional accessories including ME-RC, ME-ARC, and ME-MR remote controls, MagWeb, AGS automatic generator start, and RV-C Bridge. A three-year parts and labor warranty covers all MS Series models.
Technical Specifications
| Specification | Details |
|---|---|
| Model | MS2812 |
| Continuous Output Power | 2,800W |
| Input Battery Voltage Range | 9–16.8Vdc |
| AC Output Voltage / Accuracy | 120Vac ± 5% |
| Output Frequency / Accuracy | 60Hz ± 0.1Hz |
| Total Harmonic Distortion (THD) | <5% |
| Output Waveform | Pure Sine Wave |
| Peak Inverter Efficiency | 90% |
| 1ms Surge Current | 70A AC |
| 100ms Surge Current | 40A AC |
| 5-Second Surge Power | 3,900W |
| 30-Second Surge Power | 3,800W |
| 5-Minute Surge Power | 3,200W |
| 30-Minute Surge Power | 3,000W |
| Max Continuous Input Current | 373 ADC |
| AC Relay Transfer Time (minimum) | 16ms |
| Power Consumption — Searching | <8W |
| Power Consumption — Inverting (no load) | 30W |
| Charger Continuous Output (25°C) | 125 ADC |
| Charger Efficiency | 85% |
| Charger Power Factor | >0.95 |
| AC Input Current (rated charger output) | 18 AAC |
| Transfer Relay Capability | 60A ACC total |
| Charging Stages | 5 — Bulk, Absorb, Float, Equalize, Battery Saver |
| Battery Profiles | LFP, Gel, Flooded, AGM1, AGM2 |
| Internal Cooling | Dual 92mm variable-speed brushless DC fans (0–120 cfm) |
| Operating Temperature Range | -20°C to +60°C (-4°F to +140°F) |
| Max Operating Altitude | 15,000 ft (4,570m) |
| Operating Humidity | 0–95% RH non-condensing |
| Dimensions (L x W x H) | 13.75 x 12.65 x 8.0 in |
| Weight | 55 lbs (24.9 kg) |
| Certifications | ETL Listed UL/cUL 458, UL 1741, CSA C22.2 #107.1-01, KKK-A-1822E |
| Standard Warranty | 3 Years parts and labor |
Specs & Info