Dead battery

[flying belgian]

2 year old Napa battery. I had left the baler monitor on for a month. Came to use farmall 65 today and no start. Dead battery. So I put the charger on it and it would not show a charge. Next I jumped the battery with other tractor an lights would come on but starter just click, click, click. As I had to get baling I put the JD on baler.

2 hours later I look and charger is charging dead battery 12 amps. Tried starting and it popped right off.

Question... if I leave charger on overnight will it fully charge that battery or is that battery shot?

 

[flying belgian]

2 year old Napa battery. I had left the baler monitor on for a month. Came to use farmall 65 today and no start. Dead battery. So I put the charger on it and it would not show a charge. Next I jumped the battery with other tractor an lights would come on but starter just click, click, click. As I had to get baling I put the JD on baler.

2 hours later I look and charger is charging dead battery 12 amps. Tried starting and it popped right off.

Question... if I leave charger on overnight will it fully charge that battery or is that battery shot?

Dammit,, I don't know how to rotate my photos.

 

[ss55]

Dammit,, I don't know how to rotate my photos.

At least you know the battery did not freeze, that is really hard on batteries. At this point you do not have anything to loose by trying to save it. I would not leave a regular charger on overnight as it might boil the battery, some automatic chargers can do that too. I would put the charger on during the daytime or sometime when I could check on it every few hours until it is fully charged, and see how it goes from there.

 

[Dingo3]

I have brought a few batteries back using a trickle charger. Mine shut off automatically so it won’t over charge.
A 1amp charger may take a couple days. 2 amp 24 hours.

 

[Hobo,NC]

As a general rule

Typical Charging Times​

For a standard 12V car battery (around 50Ah):

• Slow Charge (2A charger): Approximately 25 hours.
• Medium Charge (10A charger): Approximately 5 hours.
• Fast Charge (20A charger): Approximately 2.5 hours.

However, these are general estimates. The actual time can vary based on the factors mentioned above.

I can not tell much about your charger, I don't trust the timer on a old charger.

 

[da.bees]

Get a smart charger, it will pay for itself in extended battery life while assuring battery never overcharges. It's ok to use 6 to 10 amp charger for first 50-75% then finish with smart charger.

As for your question, just try it and see what happens.

 

[a49deere]

2 year old Napa battery. I had left the baler monitor on for a month. Came to use farmall 65 today and no start. Dead battery. So I put the charger on it and it would not show a charge. Next I jumped the battery with other tractor an lights would come on but starter just click, click, click. As I had to get baling I put the JD on baler.

2 hours later I look and charger is charging dead battery 12 amps. Tried starting and it popped right off.

Question... if I leave charger on overnight will it fully charge that battery or is that battery shot?

I just did something similar! Left the ignition switch on a JD 60, Killed battery, dead as a door nail! I learned something new a year or so ago, most modern battery chargers including smart or trickle chargers WILL NOT start to charge a battery if it senses low or no voltage on the "dead" Battery. You need to "Trick" the battery charger with a set of jumper cables, hooked up to "dead" battery so as it sees voltage and will begin to charge. I've used this trick a few times in the last year. I'm thinking you jumped battery just enough that your charger saw voltage and started to charge. This last time it took three days to charge the "deader than a door nail battery" with a trickle charger, but all is well now and battery works fine.

 

[flying belgian]

I just did something similar! Left the ignition switch on a JD 60, Killed battery, dead as a door nail! I learned something new a year or so ago, most modern battery chargers including smart or trickle chargers WILL NOT start to charge a battery if it senses low or no voltage on the "dead" Battery. You need to "Trick" the battery charger with a set of jumper cables, hooked up to "dead" battery so as it sees voltage and will begin to charge. I've used this trick a few times in the last year. I'm thinking you jumped battery just enough that your charger saw voltage and started to charge. This last time it took three days to charge the "deader than a door nail battery" with a trickle charger, but all is well now and battery works fine.

That's exactly the way it went for me. "tricking" with jumpers. I did it by accident. Hope my end result is the same as yours.

 

[buickanddeere]

When a lead acid battery is deep cycled or worse yet run flat. They may take a charge but they will have lost some capacity.

 

[Blackhole49]

What Hobo said about charging times. Also, if maintainable, hydrogen peroxide is your friend.

 

[matthies]

Get a smart charger, it will pay for itself in extended battery life while assuring battery never overcharges. It's ok to use 6 to 10 amp charger for first 50-75% then finish with smart charger.

As for your question, just try it and see what happens.

Most of the smart chargers WON'T do a thing to a completely dead battery, so yes it will charge a weak battery but not in this case.

 

[flying belgian]

2 year old Napa battery. I had left the baler monitor on for a month. Came to use farmall 65 today and no start. Dead battery. So I put the charger on it and it would not show a charge. Next I jumped the battery with other tractor an lights would come on but starter just click, click, click. As I had to get baling I put the JD on baler.

2 hours later I look and charger is charging dead battery 12 amps. Tried starting and it popped right off.

Question... if I leave charger on overnight will it fully charge that battery or is that battery shot?

Battery showed full charge this morning so everything seems okay. Hope I didn't shorten life to much.

 

[Phill Tibbetts]

Do yourself a favor and go to HF and get one of the $39.99 battery charger maintainers. I have several of them ans they have saved several completely dead batteries. You can leave them on forever like I do with my tractor batteries in the winter when I remove them and take them in the garage or cellar. Next spring they are 100%. They have the pulse technology. IMHO

 

[37chief]

My 2 year old RV battery was completely dead. I put a 2 amp charge on it for three days. It came up enough to start the engine fine. Time will tell if it stays up. Stan

 

[miangus]

Only time will tell, sounds like it may be ok.

 

[moresmoke]

I had similar happen to my semi when the battery maintainer died, and it sat longer than expecting. (That truck has a whole bunch of parasitic load as a standard feature) Juiced the batteries with an old fashioned charger and the gave them a good charge with a little electronic Schumacher that has done me well reviving batteries. That was about 7 years ago. Batteries were a couple years old at the time.