Who can recommend a good Trickle Charger

[Roci]

We have a 2006 Thomas Saf T Liner with a Cat C7 engine and an Allison automatic transmission.
Everything runs great so far except we keep killing the batteries. We turn the power off, don’t worry. We figure it’s probably that we don’t run the engine long enough after using the wheelchair lift to get our daughter into the bus So we’d like to invest in a trickle charger to keep in the garage. Any recommendations?
Thanks!

[Rucker]

I bought a Cen-Tech for about fifty bucks, but it is a piece of junk. Just bought a second one, Schumacher 12 volt 80 amp start, 20 amp charger/maintainer ($80). I like this Schumacher because it has LED displays of status visible from twenty feet away. It charges all types of 12 volt batteries. To your point it also does the trickle/maintainer. Home Depot has them in stock.