Battery charger

I need a new battery charger. I need one to charge my truck (4x4) battery and my boat batteries, both starting and deep cycle. I'd appreciate any recommendations about what's good and reliable. Mr. Moderator, if this query should be placed somewhere else, feel free to.
Thanks.

If there is a northern tool store close to ya, go look at the BatteryMinder, I have two, one for my boat and one for the Road King. can google it as well, don't know if any other retailer sells the BM or not, but I like it, works well for me.

I have a Schumacher automatic charger that I will use on the cars and as a backup charger for the boats if the onboard charger goes down. It also has a starting mode that has saved my but more than once on cars and tractors around the house that I found with a dead battery.

I'd go with either a Schumacher Ship&Shore or a Black and Decker like this one

You want a charger that says "Smart Charger", "Multi-Stage", or "3-Stage". Chargers labelled Automatic can still overcharge a battery.