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What kind of battery does the KFX W5540 use?
It is highly recommended that you only use replacement batteries from Power Wheels for safe operation of your Power Wheels vehicle. Power Wheels uses a color coded system to help you easily identify the proper replacement battery.
The KFX W5540 uses the gray Power Wheels 12V 12Ah battery, model 00801-1869.
Other compatible battery models also include: 00801-0638, 00801-1460, 00801-1048, 74777, and more.
Search Amazon for more KFX W5540 replacement batteries
How long do I need to charge the gray 12 Volt Power Wheels battery for?
It is important to note that prior to first use, you must charge your new Power Wheels battery for at least 18 hours. Otherwise, an undercharged battery can result in a short run time or the vehicle doesn’t operate at all.
After the battery’s first use, recharge the battery for at least 14 hours but never leave the battery charging for longer than 30 hours.
How long does the gray 12 Volt Power Wheels battery last?
The average battery life is from 1 to 3 years depending on the frequency of use and maintenance of the battery.
The product manual for the KFX W5540 recommends that you charge the battery immediately after each use, regardless of how long it was used for.
It also recommends that you charge the battery once a month even if you are not actively using the vehicle. Leaving the battery in a discharged state may diminish its performance.
Also, do not store the battery in temperatures above 75° F (24° C) or below -10° F (-23° C).
If you need a new replacement charger, there may be some battery/charger combos available.