will a 6 volt system charge a 8 volt battery?

oldoloverlover · Sep 9, 2009

Have Oliver 77 with 6 volt system (new wiring). Will it charge 8 volt battery or am I better off just buying a 6 volt battery? Don't want to convert to 12 volts. Thanks

old · Sep 9, 2009

Well if you adjust the V.R yes it will charge an 8 volt battery but at best an 8 volt battery is a band aid fix for other problems so BUY a 6 volt battery and fix your problems. I sold an Oliver 77 that had a 6 volt battery in it and it would start 12 months out of the year and that was letting it sit for 2 plus months at times with out starting it

RayP(MI) · Sep 9, 2009

A compitent generator man can probably tweak your voltage regulator for 8v service. We have a JD B with a 6 volt generator, and a 12v regulator. Almost keeps 12v battery happy!

Ken-Pa · Sep 9, 2009

Hi , I've been running 8 v batteries in my 2 Ford tractors since 2000 . I was told by a battery shop & by the auto electric repair shop to put my charger on 6 v let it trickle chsrge for a few hours , then hit it with 12 v for a couple minutes to agitate the water more but no longer . I've had good service so far . But be sure you keep all connection points shiny & brite . Also use heavy battery & starter cables . Also I smear dielectric grease on all my connections to prevent corrosion . HTH ! God bless

Ken-Pa · Sep 9, 2009

Ooops , I forgot to tell you to take your generator, & VR to a repair shop & have them matched up ( VR needs to be tweaked ) . Then after installing them , be sure to polorize the VR before starting it . Your repair shop should be able to tell you how . HTH ! God bless

buickanddeere · Sep 9, 2009

How about a large 6V battery and 00 copper cables with swagged ends. Then make the chassis return connection directly to a starter mounting stud. Set the voltage regulator with a voltmeter to 7.2V.

Dave 2N · Sep 10, 2009

Bingo!!

Anonymous-0 · Sep 10, 2009

A 6 volt generator will explode a 12 volt battery.I worked on a 55 chevy that blew up 2 12v batteries.55 was the first 12 volt year for chevy.I put an ammeter in the line and found 60 amps at idle.Someone had put a 6v generator on and didnt take volt or current readings.Doubling the field voltage made the generator put out twice the current.What does the JD ammeter say?

gene bender · Sep 10, 2009

It must because i replaced t[some tranny parts in a C that had 8v system said they just added the battery and didnt change anything else and it had been that way several yrs. I know of another C thats been running that way for a long time. I would just add the batt and go.

gene bender · Sep 10, 2009

Is that what you did to your tractor. What tractor are you running an 8v system on and does it work or are you just telling a story someone told you.

Ken-Pa · Sep 10, 2009

I was sharing my experiences since 2000 with my Old Ford tractors with 8 v batteries . No regrets at all .I have much briter lites at night & faster startups . I wasn't having any problems with the oroginal 6 v so it isn't a band aid as guys think . I just wanted to try it out for myself .Plus , since 2000 , I've only had to replace 1 lite bulb . My first battery lasted 5 yrs , so I feel I got great service from it .HTH ! God bless

old · Sep 10, 2009

Wasn't that the name of a dog????? LOL

RN · Sep 10, 2009

Most of the old 6v regulators were adjustable- were stock set to put out about 7.5 volts to charge 6volt batteries close to discharged, run at about 6.2-6.8 volts charged battery. IHC and VWs needing cold weather start would get a 8volt battery and the voltage regulator reset to peak about 8.5/9.2 volts and run about nominal 7.8/8.2 volts. Unset regulators that had been peaking at 7.5 volts usually maintained at about the 7.5 to 8.0 voltage- battery could 1/2 discharge over time but usually started vehicle. A 12volt trickle charger-2amp or so- once a month in winter could maintain full battery charge a long time. Old VW bus got the battery only one winter, 2 trickles over winter and VR reset the next spring to run fine (or as good as a 1200 engine could run) the next winter. Shop that readjusted regulator said they did a few tractors a year same way, were aware of procedure to help tractors start in Wisconsin winters. RN.

buickanddeere · Sep 11, 2009

(quoted from post at 22:04:32 09/09/09) Have Oliver 77 with 6 volt system (new wiring). Will it charge 8 volt battery or am I better off just buying a 6 volt battery? Don't want to convert to 12 volts. Thanks

Ideal charging voltage for a 6V battery is 6.9 summer and 7.2 winter. An 8V battery's ideals are 9.2 summer and 9.5 winter.
Those 6.5V lights are going to shine bright but only for a short period of time with an 8V battery.
An 1/2 charged medium sized 8V battery with Walmart battery cables isn't going to shove any more current and voltage through the starter/ignition coil. Than a large 6V with high CCA and two 00 cables with properly made connections.

will a 6 volt system charge a 8 volt battery?

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