charging batteries while plugged into shore power

[TerryH]

Using the search function here will give you a myriad of info on various converters, each rated by the individual user. One common denominator you will find is that the best for sourcing, supply, suggestions for your needs, follow up, and both quick and overall amazing support comes from Randy at Best Convertors:

http://www.bestconverter.com/

My personal opinion of the Magnatek 4300 and 4500 series is that they may have been a good choice 30 years ago. Today they are both dangerous and best used as a boat anchor.

Read through, completely, Best's site, email Randy and then decide.
Regardless of whom you buy from and who's equipment you use, it will be a valuable learning experience.

Good luck.

[M & J]

Search Boondocker brand. Many have installed them.

[Rickf1985]

Look here, Talk to Randy. A lot of us on here have purchased from him. Very good guy and very knowledgeable.

http://www.bestconverter.com/

[Jerry]

Thanks for the input all, after posting I did do a little research and had pretty much decided on the boondocker and it seems most of you agree so thats what I will go with.