What battery charger do you use?

[Turbogus]

Just to clarify, it wasn't a parasitic drain that prompted me to purchase a new, more powerful battery charger. Truth be known I had a brief 'donkey ear' moment when after rerouting the wiring for my radiator fans, I left the ignition on overnight. While I was able to recover the primary battery with this old NAPA charger

using the jumper battery method I could not get it to charge this battery over 10.8 volts despite the distilled water full up in the cells. This battery is only two years old and a Johnson Controls one at that.

 

[Lumpy Grits]

Welcome to the 'Battery Killer Club'.
Sounds like the electrolyte's gravity was to diluted. BTDT
LG

 

[HackFabrication]

Like Lumpy, I've got a really old Craftsman 2/10 charger. The auto setting has taken a dump, so I just use it for timed charging.

But.... For maintaining batteries, I have several Battery Tenders. I've got a Harley, a pontoon, and a speedboat. In addition to the CJ5 . All get the batteries pulled and hooked up to the Battery Tenders over the winter. Never had a single issue with any of them. Unlike the Schumacher battery chargers, which I have gone through a couple of, before giving up on them. Even on the 'float' setting, they aren't as good as the Battery Tenders, IMHO.

 

[Neuner]

I use 3 of these and very pleased.
They are not 'chargers' per say. They will maintain a charged battery.
If your other chargers will not take you to 12+ vdc. You have a drain somewhere(alternator maybe). These maintainers chg with 1.5A, at most.

https://www.walmart.com/ip/Schumacher-Automotive-SpeedCharge-Battery-Maintainer-and-Charger/13005742

LG

I use one of these for my boat battery. Been working great.