u/AccomplishedKick4904

I just bought a 2010 international, drove it home, and after sitting for less than a week the battery voltage has dropped to about 11.8 and the engine will struggle to turn over but never start. I’m assuming it’s just a heavy parasitic load I need to address eventually, but my question today is could I install a trickle charger to get the batteries up to a workable charge to avoid having to jump the bus or do a quick charge? thank you in advance for any advice