above are a couple of sites for Schumacher chargers. I have one that no longer is shown on the site, nor is its capabilities: 15/2/100 amp. Both regular and deep cycle, for 6 and 12 volt. The 100 amp is for quick starting a car or truck. The 15 amp is for quick charge, and the 2 amp is for trickle charging.
If you leave your key on over night and deep dis charge your battery, a battery tender will only keep it warm...it will Never get it to a full charge. That's where a versatile charger like the above comes in handy. With a 10-15 amp charge for only as much as five minutes, you can bring the battery back to life, then get your start and ride or put it on the tender.
If you have a diesel, that 100 amp (3 second max) will make that motor hummmmm! If you have a boat or RV, the deep cycle feature is nice.
There are a jillion pure tenders, just make sure they work for the gell cells.
If you have more than one toy in the box, I'd consider a multiple outlet tender.
For a battery, I'd get an Odyssey gell cell PC80....can't remember all the numbers for an LT, but that battery will give you long life and no problems.
Search here for reference, and Goggle the hell out of it for the best price. Have it shipped to your door and save half of local pick up price.