Magnum Energy MS4448PAE 48V Pure Sine Wave Inverter 4400 Watts

• Pure Sine Wave Inverter
• Up to four MS-PAE Series inverters can be connected together
• 48V
• Power Factor Corrected Charger
• 2 year manufacturer warranty

I bought one of these a couple years ago, and it's been working perfectly ever since!!! last I knew Expressbatteries.com has them for $1,800.00 bucks with a coupon code you type in at checkout. "LESS20PERCENT" or something similar to that. This unit puts out 120/240 so it works great for backup power in a house and 4800W is plenty of capacity for most homes.