How to Diagnose and Fix a Non-Charging Lawn Mower Battery. There can be many reasons why your lawn mower battery is not charging. It could be the Stator, the Voltage Regulator, the Ignition Switch, the Wiring or something else.
In this video I will walk you through the step-by-step process so you can diagnose and repair a no charge issue with your small engine equipment. It could be your riding lawn mower, zero turn mower, snow blower or any other small engine equipment that has a battery.
This could be a very simple fix and can save you time and hundreds of dollars doing it yourself.
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Disclaimer:
Although I have been following these procedures for many years; I assume no liability for any damage that may occur to any person or property as a result of the information provided in this video. I take necessary precautions (that I am aware of) when working on these projects but that in no way implies or creates any expressed or implied warranty or guarantee of any kind of particular result. Any injury, damage or loss of any kind to anyone or their property or anything related to information in this video is the sole responsibility of the user and not Helping U Online (this video).
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you were a big help fixed my mower for 20 dollars if i would went to the shop well over 250 thank you
Wow GREAT VIDEO !!
This is a great video to learn how to check the wiring after checking stator and regulator outputs. Thanks!
If I came upon a fuse block that dirty I’d do something to protect it in the future, even if it was only cleaning up the surrounding area and covering with duct tape and using a sharpie to write “FUSES!” on the tape. Bad design – should have had a removable cover built in from the factory.
Thanks for the video my fuse was actually blown working now I’ll have to keep an eye on it to see if it blows again
Very informative video! Thanks! Going to use this information to try and figure out why my battery isn't charging. Thanks again.
Thank you! Awesome video!
Very helpful..❤ it great work!!!
Thank you for this great video…. You allowed me to diagnose my whole machine and learn to use a meter
My amps on the voltage regulator was 12.5 and 12.3 with pto engaged
Is that too low?. My engine keeps stalling out randomly mowing
Excellent video with all the details as to how to diagnose issues regarding battery not charging. Hopefully this will allow me to remedy issue with JD zero turn battery drain.
Kohler 5400 series has 3 prongs but 6 wires coming out. Same thing?
my simplicity does not read more than 12.65 while running, but i just mowed and it still says 12.65. Could the charging system be working fine?
Very helpful video. Good tutorial. 😮
Very interesting. I'm pretty sure my battery is shot because it's ancient (7.5 years, original on a 36hp Vanguard Hustler Hyperdrive) but I never knew a dirty fuse could cause issues like that. Makes sense, just wouldn't have occurred to me to check.
Great Im learning a lot on video I have a small problem in put 28v and out 7v I wonder the regulator is bad thanks
So even though you have 13.5 volts at the battery terminal, like at the first of the video, there was still a problem? I figured if you got 13 volts at the battery while it was at full throttle, you were good.
this was great. slow and to the point. VR is bad and new one ordered
Great video. You are a great teacher. Helped me repair mine. Thank You
how did you start the engine with a dead battery? I have a jump starter
Great video !!
Your video is like going to school brother. Thank you for this great lesson!
Great video! It is very detailed and will help anyone who watches it understand how the charging system works and how to diagnose it. Keep up the great work!
Very very helpful
Thanks for posting
Video was helpful. I do understand electricity and the basics of charging systems, but I did not consider fuses or ignition switches when my Husqvarna PZ72 was not charging. I discovered another tip that you might consider, using your multi meter check the resistance between positive battery terminal and the disconnected charging lead from the voltage regulator. There should be no continuity with the ignition switch off, and very low resistance with it on. Mine was registering around 200 ohms when I started this test, after cleaning the ignition switch, it went down to about 50, but it’s obvious that it’s faulty and needs to be replaced.
Seems like an easier way to diagnose the wire instead of the alligator clips would be to measure the voltage drop between the positive terminal of the battery and the output of a voltage regulator. Should be minimal, I’m currently troubleshooting a situation where I have 1.5 V between the positive terminal battery and the output of the voltage regulator. I haven’t sold it yet, but that seems high, I’m in the 13+ range at the regulator but less than 12 at the battery.
Great video! Thanks for sharing be safe have fun
The video was very thorough.
Thank you