What voltage do they supply? Is there any difference with various models? I have quite an old model and wish to replace it with either the
3000 or 4000. I know they come complete with charger but no longer make wall mounted ones. As my current model is wall mounted, and this is almost a necessity can I use my old charger for the new model? I've Googled until my fingers are sore and my brain numb, but am unable to find the answer.- posted
9 years ago