Battery Tender

/ Battery Tender #1  
Joined
Sep 5, 2016
Messages
42
Location
Virginia
Tractor
Mahindra
I'm contemplating using a battery tender (self regulating trickle charger) on a 26XL during the winter.

I'll likely install a fused pigtail with covered plug located outside the grill so I will not have to open the hood every time I want to attach/detach the charger.

Does anyone have experience with this? I've had problems in other applications where the battery needed to be isolated from the system during charging. Is there anything powered by the battery on that tractor when the key is off ?
 
/ Battery Tender #2  
On my tractor at least, there is nothing pulling from the battery when the key is in the off position, yours may not be the same, but I would bet it is.

I've got one Battery Tender and two of the Black and Decker models, all three work very well, though I prefer the Battery Tender simply because it came with the clamps and the eyelets for permanent mounting. Just bolt it on your battery, take a zip tie and secure it so that it's accessible and not in any danger of being damaged while using the tractor and drive on.
 
/ Battery Tender #3  
I have the pigtails on my tractor, both diesel Grasshoppers, and my BCS batteries. I use a BatteryMinder which is a smart charger/maintainer, and plug it in to each battery about once a month or so. I leave it on each one for 1 - 3 days just to keep things topped off when not in use, or after starting an engine to move something and not running it long enough for a good charge.
 
/ Battery Tender #4  
If I hadn't had one on my tractor I would have killed the battery by now. My Kubota was new to me and the key switch different than my Massy so I left the thing on once with the radio still on. These battery tenders have got to be one of the best things they have developed recently. Well worth the money and will save you even more by extending your present battery.

I first learned of them with my motorcycle. The most I ever got out of a battery was about 2 1/2 years. With them I had one battery go 7 years when I traded it and it was still strong.
 
/ Battery Tender #5  
I have a Battery Tender on my Kubota. The "capped pigtail" sticks out of the front corner by the grill. Easy to plug and unplug. I also use one on a built-up Jeep that only see 5-6K per year. I've also used them on other vehicles in the past...I swear by them!
 
/ Battery Tender #6  
I'm contemplating using a battery tender (self regulating trickle charger) on a 26XL during the winter.

I'll likely install a fused pigtail with covered plug located outside the grill so I will not have to open the hood every time I want to attach/detach the charger.

Does anyone have experience with this? I've had problems in other applications where the battery needed to be isolated from the system during charging. Is there anything powered by the battery on that tractor when the key is off ?

I installed a maintenance charger in the tractor next to the battery and ran the AC cord down and out the front of the grill. Now if I'm not going to use the tractor for a while, I plug an extension cord into the charger cord. Kinda like the way everyone did the tank heaters on their cars back when I lived in WY and CO.
 
/ Battery Tender #7  
I have a Battery Tender on my MAHINDRA. The "capped pigtail" sticks out of the front corner by the grill. Easy to plug and unplug. I also use one on a built-up Jeep that only see 5-6K per year. I've also used them on other vehicles in the past ...I swear by them!

this ^^^^^^^
 
/ Battery Tender
  • Thread Starter
#8  
Thanks to ALL. :thumbsup:

I've had very good experiences with most prior applications of battery tenders and just wanted a little feedback.

I Completely agree that a battery tender will extend the life of a battery. I've used both battery tenders and solar trickle chargers in the past and had generally good results.
 
/ Battery Tender #9  
P and P-

What was the application where the battery need to be isolated that cause you issues in the past? That's the most intriguing part of this post.....
 
/ Battery Tender #10  
Here is what I did. Wired direct to battery terminals. Connector on dash right side. Use the Deltran Battery Tender on my BX tractor, Z-turn, and generator. Expensive ($50) but worth it IMO.

IMG_7330.JPG
 
/ Battery Tender #11  
I use my Mahindra a couple times a week so I don't need one on it at this time. However, I have a Battery Tender Jr. and a Schumacher that I keep on my motorcycles. Both work just fine for about $20. If I ever get to the point that the tractor sits for several weeks at a time, I'll add a tender to it.
 
/ Battery Tender #12  
I have a Deltran battery tender on both my tractor & my motorcycle. Both have fused pig tails off the battery and are left on the vehicles year round. Never had a moments problems with either. Nice to have a topped up battery when you want to go.
 
/ Battery Tender
  • Thread Starter
#13  
P and P-

What was the application where the battery need to be isolated that cause you issues in the past? That's the most intriguing part of this post.....

A home generator with an internal battery charger that failed - it was easier (and cheaper) to isolate the battery and add an external charger than to repair the control board that included the charging system.

And - a solar trickle charger used via a cigarette lighter socket that cooked an old electro-mechanical voltage regulator. That one was probably a bad set of points in the regulator and not directly a result of the charger. I did trace it back to the regulator before I replaced it with a newer solid state unit and couldn't duplicate the issue after that so I'm not sure if that one was a combination of the charger and a bad regulator or if the charger caused the points to attempt to close just enough to kill it.
 
/ Battery Tender #14  
Ok thanks for sharing. I assume with the generator battery isolated you lost the ability to automatically start it? Or am I thinking about "isolate" in a different sense?
I have used the battery tender for years and couldn't figure a need where the "system" could see battery voltage but not get occasional input, through the battery, from the battery tender.
Since this is your thread and I don't want to hijack without you- what brand of home gen? I'm in the market for a stand-by.
 
/ Battery Tender
  • Thread Starter
#15  
DSCN1734.JPG

These are the two styles of plugs that I have available. I'm leaning towards the round style (used on some JD tractors and BMW motorcycles)

It's just a bit easier to use when it's cold.
 
/ Battery Tender
  • Thread Starter
#16  
Ok thanks for sharing. I assume with the generator battery isolated you lost the ability to automatically start it? Or am I thinking about "isolate" in a different sense?
I have used the battery tender for years and couldn't figure a need where the "system" could see battery voltage but not get occasional input, through the battery, from the battery tender.
Since this is your thread and I don't want to hijack without you- what brand of home gen? I'm in the market for a stand-by.

The generator is an old Generac and it will still start automatically as long as the battery in on-line. I have to use a battery switch to isolate the battery when I charge the unit but I can revert back to automatic start-up if I need to. I just exercise it manually now and charge the battery every few weeks.

I could fix it but the unit is too old to invest the money into it at this point. If it was newer I would just buy another control board.
 
/ Battery Tender #18  
View attachment 491469

These are the two styles of plugs that I have available. I'm leaning towards the round style (used on some JD tractors and BMW motorcycles)

It's just a bit easier to use when it's cold.
I use the SAE plug on the right. It's fairly universal and used with Battery Tender and BatteryMinder brands, so additional cords, pigtails, etc are easy to find. The SAE style is also used on many 12v accessories like pumps or sprayers. I'm not familiar with the one on the left, but I can see that it would be easy to use.
 
/ Battery Tender #19  
The generator is an old Generac and it will still start automatically as long as the battery in on-line. I have to use a battery switch to isolate the battery when I charge the unit but I can revert back to automatic start-up if I need to. I just exercise it manually now and charge the battery every few weeks.

I could fix it but the unit is too old to invest the money into it at this point. If it was newer I would just buy another control board.

You could likely just hook the tender up to the battery and leave it connected as the internal charger was so you don't have to fiddle with switches etc and have full auto. Most tender/maintenance chargers are made to operate this way with isolation diodes to keep the alternator from doing any damage to the charger.
My Generac was hacked by the previous owner. He went through all kinds of pain to make the generator not start automatically. DUH you just need to flip the rocker switch to manual or off fer pity sake. He'd hacked out the built in charger and wired in an external maintenance charger. He even ran an extra AC power circuit to the charger. I removed his hacks, removed and installed the maintenance charger in my tractor. Then I installed the auto switching panel that came with the generator and redid all of his bogus AC wiring. The guy was a real idiot when it came to stuff like this. The truly scary part is he is a retired airline mechanic for United and I used to fly United a lot. It sends shivers up my spine.
 
/ Battery Tender
  • Thread Starter
#20  
I hear you reference the Generac internal charger. The problem is the internal charger, which is basically a battery tender itself, doesn't charge the battery anymore but it does seem to confuse an external charger. I suspect the diodes that prevent that back feeding may actually be defective. I don't know for sure because it's just not worth my time to trouble shoot that control board and not worth the money to replace it.

I installed a battery disconnect and I just open it when I charge the battery. Everything works as it should and it's a cheap solution for now. I installed the generator myself about 15 years ago and I'll likely try to get a few more years out of it before I replace it.
 

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