John Deere Lawn Mower Battery Keeps Dying

John Deere Lawn Mower Battery Keeps Dying. They are usually equipped with a 12-volt battery that is similar to the one you would find in an everyday automobile. However, some brands may also have six-volt batteries.

Typically, they are 12-volt systems, though, because most lawn mowers require exceptional amounts of energy to crank their engines.

The recharging system of your lawn equipment keeps powering the battery once the battery has been depleted following multiple uses throughout its lifetime.

John Deere Lawn Mower Battery Keeps Dying

One issue is loose cables where they connect to the battery posts. A loose connection makes it hard for a battery to give its all to the charger, thus draining it of power more quickly. Cleaning the posts and tightening the connections should renew your battery’s ability to hold a charge. A larger problem is a cracked battery case.

This article discusses some problems with a John Deere lawnmower whose battery keeps dying.

Issue With Alternator

issue with alternator

The alternator provides voltage to your lawnmower and it even recharges the battery when the engine is running.

However, by testing the alternator’s voltage output in accordance with your wiring diagram, you can determine if there is something wrong with the alternator or not.

Problem With Voltage Regulator

While the engine is running, a voltage regulator checks voltage regularly and then maintains its preset amount on the alternator to keep the lawnmower battery charged.

In some mowers, there are built-in regulators in the alternator or a separate “voltage regulator” motor that is an original part of the alternator setup.

If any of these parts break down, then it usually isn’t possible to charge or run your mowers at all.

Defective Charger

defective charger

To help determine if the charger is defective, you should use either a multimeter or continuity tester to verify that there’s both voltage and grounding from the item in question.

In addition, make sure that the outlet used by the charger is not tripped and is capable of providing enough power for it consistently.

Battery Fault

One or more cells in the battery may be dead. Try plugging your battery into a charger for about two minutes to see if it is holding on to a charge.

If the battery still does not charge, we recommend having this test done by a professional at your local electronics store.

This indicates that you have either a faulty charging cord, a fault in the charge port/battery contacts, or that your device is simply broken and needs to be replaced.

FAQs

What causes my John Deere mower battery to keep dying?

One problem could be loose cables where they connect to the battery posts. A loose connection makes your battery work harder, thereby draining it of power more quickly.

Cleaning the posts and tightening the connections should renew your battery’s ability to hold correctly.

Another more serious issue is a crack in your battery case, which will render it vulnerable to leaking and require an entirely new one.

How come my lawn mower battery won’t hold a charge?

If your lawnmower battery won’t hold a charge, connect it to the charger. If it’s fully charged within 8 hours, your battery is dead and you’ll need to replace it.

Now if you test your battery with a voltmeter and get 0 volts out of it this could mean that there’s an issue with the alternator or alternator cables. That’s something to look into and research further.

John Deere Lawn Mower Battery Keeps Dying

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