4020 charging

[JoeMartin]

A family friend lives on a farm, her husband passed away a few years ago. She let the 4020 sit all winter and the batteries are dead as a doornail. Can I stick my charger on one side and let it charge, or do I have to disconnect the two batteries first? Joe.

 

[tim s]

Charge one side at a time hook up positive to positive neg to neg...

 

[John T]

You can charge a battery with the correct voltage battery charger + to + and - to - without unhooking it !!!!!!!


If its a 4020 Diesel it has batteries connected in series BUT STILL YOU CAN CHARGE ONE BATTERY ON ONE SIDE + to + and - to - from correct voltage charger to that one battery and not unhook the other. I would charge them BOTH to as near equal charge state as you can so ones not stronger then the other.


John T

 

[JoeMartin]

(quoted from post at 17:52:59 04/18/18)
You can charge a battery with the correct voltage battery charger + to + and - to - without unhooking it !!!!!!!


If its a 4020 Diesel it has batteries connected in series BUT STILL YOU CAN CHARGE ONE BATTERY ON ONE SIDE + to + and - to - from correct voltage charger to that one battery and not unhook the other. I would charge them BOTH to as near equal charge state as you can so ones not stronger then the other.

Thanks, yes it's a diesel with two batteries. Just needed to know if I had to disconnect them while charging. Heading over shortly to get them going, Joe.
John T

 

[Dan in North Houston]

In addition to what the others said:
on my 4020, I sometimes have to put the battery charger on to get it to start. But you never know which side is causing the problem. Sometimes when I put the charger on, it still won't start. If I then put the charger on the battery on the other side, it will start.

 

[Roger in Iowa]

What is the vintage of the tractor? Is it Diesel or gas or lp. Is it 12 volt or 24 volt set up. Need more info.

 

[Roger in Iowa]

Could be two 6 volt batteries???