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Lawn mower battery charging help needed

#1

B

bt-77

Hi, I posted this topic on a different forum but wanted more opinions. My lawn mower battery is dead on my lawn mower and I have no clue what amp to charge my 12 volt lead acid battery on my lawn mower. My charger has 50,10, and 2 amp settings on it. What setting is appropriate to charge a lawn mower battery on? Thanks


#2

ILENGINE

ILENGINE

2 or 10 would be fine. The issue to be away of is most of the modern chargers won't charge a completely dead battery. You have to have a certain voltage in the battery for the charger to turn on the charge function.


#3

StarTech

StarTech

This why I wouldn't give up my 1970 era charger. Another option is a 12v solar panel to bring a surface charge of 7 volts or higher so the electronic controlled chargers will recognize the battery. I have that does both 6 and 12 volt batteries and this what I have to do to get it to charge dead 12 v batteries; otherwise it just charges to 6 volt.


#4

N

Normando

Noco has a battery charger that will "repair" a battery with little to no voltage. I used it on a tractor battery that my newer chargers wouldn't charge. It worked well on that battery and got me another year or two of life.


#5

S

slomo

bt-77 said:
Hi, I posted this topic on a different forum but wanted more opinions. My lawn mower battery is dead on my lawn mower and I have no clue what amp to charge my 12 volt lead acid battery on my lawn mower. My charger has 50,10, and 2 amp settings on it. What setting is appropriate to charge a lawn mower battery on? Thanks
Click to expand...
2 is plenty for such a small battery. Lower rate the better. Might have to jump it to get some voltage into her so it will charge as others have said.

Below will handle what you need.

1747409893758.jpeg


#6

M

MParr

Are you able to check the electrolyte level? If so, add the appropriate amount of distilled water to the cells and then charge it.


#7

S

slomo

MParr said:
Are you able to check the electrolyte level? If so, add the appropriate amount of distilled water to the cells and then charge it.
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Once the plates get uncovered, she is toast. Never had any luck with distilled water or hose water. She died in short fashion once the water evaps. My luck anyway.


#8

Tiger Small Engine

Tiger Small Engine

slomo said:
Once the plates get uncovered, she is toast. Never had any luck with distilled water or hose water. She died in short fashion once the water evaps. My luck anyway.
Click to expand...
I have been able to bring back several dead batteries with my Noco charger. Will charge down to 1 volt. Remember, you can always hook up a set of jumper cables from a good bad to the battery needing to be charged, and bring it up to 12.0 volts, and then begin charging to get it to 12.75 volts.

Yeah once the plates don’t have water on them, it is over for bringing back that battery.


#9

B

bt-77

Tiger Small Engine said:
I have been able to bring back several dead batteries with my Noco charger. Will charge down to 1 volt. Remember, you can always hook up a set of jumper cables from a good bad to the battery needing to be charged, and bring it up to 12.0 volts, and then begin charging to get it to 12.75 volts.

Yeah once the plates don’t have water on them, it is over for bringing back that battery.
Click to expand...
What amp is that noco charger?


#10

M

MParr

slomo said:
Once the plates get uncovered, she is toast. Never had any luck with distilled water or hose water. She died in short fashion once the water evaps. My luck anyway.
Click to expand...
I've experienced the U1 batteries being a little low. I check mine on a regular basis. There is usually electrolyte covering the lead. Those little YUASA batteries in motorcycles and ATVs are a different story.


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