Letter Re: Small Scale Alternative Energy in Suburbia
Sir: I had purchased two Schumacher brand Portable Power packs-essentially a [gel cell] battery with [just] an inverter without the extra buzzers and bells from a company that makes quality battery chargers. It has a 400w inverter with a modified sine wave output. During Hurricane Irene the only thing that I could get it to power was a standard lamp with an incandescent light bulb! It wouldn’t run tools or electronics. After some Internet research, I found that most units used the modified sine wave because it is a less expensive design. Unfortunately, it may or may not supply power to the unit that …