Out of stock

Magnum Energy MS2812 Sine-Wave Off-Grid Inverter/Chargers

price as of July 23
All Magnum Energy products


Input Voltage DC9 - 17
Output Voltage AC120
TypeGrid-Tie Inverters
Rated Efficiency88%
Dimensions LxWxH13.75 x 12.65 x 8.0 in
Weight55 lbs
ManufacturerMagnum Energy
Manufacturer Part #MS2812
Operating Temperatures -4° F to 140° F
Warranty3 years Warranty
Delivery Time 5-7 business days

About product

Magnum Energy True Sine-Wave Off-Grid Inverter/Chargers, MS2812, 2800W

These American pure sine wave off-grid inverter/chargers are made specifically for small residential systems, boats and RV. The MS2812 model from Magnum Energy offers 2800 W power output with input battery voltage ranging from 9 to 17 VDC.

As the charger, this model provides continuous output of 125 ADC with 85% efficiency. This product line is known for using 25-30% less energy from the generator (solar array) than standard chargers.

The inverter is very small and light, making the installation of it easier. You can mount it on a shelf, bulkhead or even upside down. Powder coating is applied on the chassis and top for corrosion protection. The inverter is made in America and is backed up with a 3 year standard warranty.


  • Continuous power output at 25°C: 2800W
  • Input battery voltage range: 9-17 VDC
  • Inverter efficiency: 88%
  • Dimensions: 13.75 x 12.65 x 8.0 inches
  • Weight: 55 lbs
  • Warranty: 3 years

Reviews & Questions

  • Reviews (3)
  • Questions (2)
just received my order. thanks guys,you’re the best!!
08/06/2021 09:25 am
It is definitely small so it’s quite easy to find an empty spot for it on a boat or an RV. and it looks nice. just wish the output was a bit bigger..The efficiency is kinda meh, but for this money it’s a great deal.
07/23/2021 03:24 pm
Bought this for my van half a year ago. It was super easy to install. Haven’t thought of it since then so i guess it does a very good job.
06/18/2021 03:24 pm

Leave a review

Good day. How long is the delivery going to take?
08/04/2021, 15:30
Good day. Between 5-7 working days.
i kinda doubt..how are you supposed to install it and wire it together with panels in a van??
07/10/2021, 09:29
Good day. You can check out our Guides & Articles section, there is a detailed guide about DIY RV solar installation.