1978 SeaRay Want to install on board battery tender. need shore power hookup?

Hello everyone,
I have a 1978 sea Ray SRV240 cuddy. I do not have shore power and i need to instal a battery charger of some sorts while im at the dock. Not sure how to go about this, need to keep it as simple and cheap as possible. First year i am at a dock with power. had alot of trouble previous years with the battery drain. Please help Thanks

Re: 1978 SeaRay Want to install on board battery tender. need shore power hookup?

You don't install a "Battery Tender" you install a "battery charger" (there is a difference). Battery tenders are very low current output (1.5 amp or so) and are designed to keep a fully charged battery topped off. They are not intended to fully charge a discharged battery. Battery chargers (smart chargers) are available as a portable type or for your application you want an on-board smart charger such as a Guest, Pro-Mariner or any of the other gazillion brand names. They are available with one, two, three or even four outputs depending on how many batteries you have. There is no magic to the installation. Find a spot near the battery, mount the unit. Connect the two outputs to the battery and plug the cord into a shore power cord. If you don't like that configuration, install a shore power connector, wire the AC cord to that connector and then use the shore power cord to connect to the shore power outlet at the dock.