Check the listing for details. OFF-GRID INVERTER - BEACON POWER M5 - 48 V. Used - Working. Make Offer!. Condition: Used. Listed at 495.00 USD. The Beacon Power M5 is a 48V off-grid inverter designed for alternative energy systems. This charger/inverter is suitable for solar-powered systems and is based on battery technology. The wattage output range is 0 to 5000W with a continuous power output of 5000W, it can efficiently convert DC/AC power for off-grid applications. The M5 model from Beacon is used and was functioning as designed when we decommissioned it from our long time customer. This unit is used and was an excellent choice for off grid application for homeowners looking to improve their electrical supplies with alternative energy sources. We are a 16 year Solar veteran company and can offer technical information on this unit. It comes complete with an Installation and Operation Manual.