Anybody ever connect an external battery?

jmcgsd wrote:
The Lancer 880 only has room for one battery. I'm thinking of connecting a second one and using jumper cables to the main battery. Has anybody ever done this?

Here is an idea that I am toying with
A second series 27 batt in a batt box and connecting with a 7 pi connector when camped.I made my owm 7 pti connector several years ago,but got a new factory made when I got the new camper.
I will cut the old one in half and only use the the 12v hot and gtound
when drycamping unhook the 7 pin connector and plug in the extra batt
Will post pics when I get the new batt and holder