Is there a special model Battery Tender used for a 6 volt system ??? or can the Battery Tender Jr. which is 12 volt be used without complications ??? I tried to get through at Battery Tender customer support with no luck, was on hold for over a hour an still no answer when I finally hung up !!!
Plenty of 6 volt ones listed on Ebey.
They are listed on Amazon also. I keep a battery tender on every battery that will not be used for over a month whether on a auto, tractor or riding lawn mower. They are a good investment considering battery prices these days and help the batteries last longer.
I bought a nice one from Lowe's lawn and garden dept that will do 12 or 6 volts. It works on an automatic switch and was able to verify so with a voltmeter.
I have not had an issue with it.
But battery tender does make a 'smart' charger
http://www.batterymart.com/p-022-0202-dl-wh-battery-tender-6-12v-3a.html?gclid=C j0KEQjwlNy8BRC676-W0JezxbwBEiQA4Ydg0fdd51twSaQTgD-7rHnaqatadxEIjB6E6YwaB_DPZLIaA ms28P8HAQ
Auto-Zone sells Schumacher Battery tenders for around $30.00. I have 2 of them and they work fine. They are for 6 or 12 Volt. These are not a cheapo type of charger. They are well made and will last.
For any vehicle that's not driven all the time they are a good investment for saving batteries.
I have one of these and love it. Works for whatever battery I have that needs charged or maintained.
There are smaller versions made by the same company as well
NAPA Auto Parts sells one that is both 6 volts and/or 12 volts and switches automatically. Sells for forty-something,.....works so well that I have purchased several for use on several antique as well as modern vehicles.
I bought a cheapo from Harbor Freight 10 years ago for $2, they are $5.95 now, it gave up the ghost this week. Harbor Freight here I come.
Have 6 volt battery tenders on all 5 T's and the Model A and have 12 volt tenders on Tractor, Road grader, bobcat and excavator. Never park any of them without them being connected. Haven't bought a battery in 10 plus years except for the F150 driver. Best investment there is other than oil and dinner for your wife.
Battery Tender makes a 6v charger, recently bought one from the local battery shop for #30. Call around , you'll find one, Don.
Eight years after a six volt from our area I pulled the post cables off checked the water and cleaned the posted stuck it on a three volt charger yesterday----all day until the charge went to one volt. Checked with a draw down it said fare condition it would not draw down. Today I fired up the T after two years. The battery was long past its guarantee.
I use a John Regan design "float charger". Easy and cheap to make and is dependable.
Several of my battery chargers automatically switch between 6 & 12 volts, but my favorites are small solar panel chargers.
Man, this is all good information guys, sure appreciate everyone's input. Like Larry from TN, I keep all my 12V batteries plugged in when sitting idle, but just couldn't find a decent 6V.