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Wolf King GT Fuse + Charger Replacement Set

Announcement: August 01 2022

Since its release, some Kaabo Wolf King GT electric scooters have experienced serious battery-related incidents. Considering more recent cases resulting in fires, the manufacturer conducted a study. For a batch of 300 units of Wolf King GT scooters, Kaabo concluded that short circuits in the motor controllers cause the battery to fail, and installing additional fuses, replacing the stock chargers and discontinuing use of fast chargers would prevent these incidents from occurring.

NOTE: Customers that purchased scooters from the affected batch will receive formal notifications and will receive this set for free when ordered.

The fuses support the battery management system (BMS) – the battery’s control center – by providing additional overcurrent protection, and help prevent a short circuit originating in the motor controllers from negatively impacting the battery. The updated chargers have fail-safe surge protection technology, ensuring that if a defect with the battery is detected the unit will not deliver power (safeguarding the battery against fire).

Together with Kaabo, we offer this replacement set as a free solution to prevent electrical emergencies from occurring in units that have already been delivered to customers. We also have a response to this issue for units that have not yet left our warehouse or the manufacturer.

For the customers of the 300 affected units, we offer a fuse and charger replacement set that we will ship for free (no cost for parts or shipping fees). You can reserve a set directly on this page: use the same email account as your Wolf King GT purchase, and add the code "WKGTSet" at checkout. The installation is not very involved, but you can bring/send your unit to our service centers in Los Angeles and Brooklyn to have the replacement done for you (service and shipping fees apply).

For customers that have ordered but not yet received a Wolf King GT, we are installing fuses and replacing chargers in units that are affected but have not yet left the warehouse. For incoming units, Kaabo has preemptively pre-installed additional fuses and included updated chargers.

This is a safety precaution provided by the manufacturer and distributed by us, not a product recall. This does not affect other Kaabo scooters in our stock, and only applies to select Wolf King GT units with the Viken battery/BMS. As with all electronics equipped with a li-ion battery, there is a risk of combustion. This risk increases if there is damage to the battery, improper response from the BMS, or pairing an incompatible charger with an electronic device.

Who Needs One?

It has been reported that this issue is only affecting a small group of Wolf King GTs. You are not required but strongly encouraged to perform this replacement, as it helps safeguards you, your property and your unit from suffering from known issues.

If you’ve experienced any of the following symptoms, you should immediately discontinue use of the scooter, ensure it is in a safe location (preferably outdoors and away from flammable items), and contact us directly for assistance.

  • Scooter turning on/off unexpectedly
  • Scooter shutting down at 50% charge
  • Scooter does not hold charge
  • Scooter does not power on
  • Scooter battery makes thudding, clicking or popping sounds when charging

In addition to providing the replacement set, we’re offering customers of affected units that do not wish to keep the unit the option to exchange their unit for a comparable model or to receive a refund. Please contact us directly to discuss these alternatives.

What's Causing It?

The BMS is designed to regulate the performance of rechargeable li-ion batteries, specifically monitoring temperature, protecting the battery from reaching unsafe operating limits, and responding to user input to optimize the battery’s performance. The BMS is responsible for shutting down the system when the battery is overheated or overloaded, and this function is not working properly.

Kaabo discovered that the motor controllers short circuit, causing the BMS to fail, and allowing the battery and/or electrical wiring to carry too heavy a load – resulting in the battery pack catching fire. The BMS should be able to respond to these short circuits by protecting the battery against them, and turning the system on/off when conditions are safe.The defect affects 300 units in which Kaabo installed batteries provided by a different supplier than the rest of the lot (Viken).The Viken BMS fails to regulate power, allowing too much current to run through the scooter and causing malfunctions to occur.

The addition of two fuses between the controllers and battery connection will help prevent short circuits from shutting down the BMS and allowing the pack to overheat. In addition, the replacement chargers have a fail-safe feature that will prevent them from delivering power if they detect any abnormality with the battery. Reminder: Kaabo recommends using these updated chargers and discontinuing use of fast chargers with these specific units.

How to Fix It?

VORO will ship you the following items for free:

  • 1 long fuse connection
  • 1 short fuse connection
  • 2 updated 84V 1.5A chargers

You’ll need a Phillips head screwdriver, heat shrink tubing and a heat gun (or electrical tape), and zip ties to perform this replacement. Install involves adding two (2) fuses inside the controller on the battery discharge line (thick red cable).

Here's how to install the fuses:

  1. Using a Phillips screwdriver, remove the back cover of the controller casing.
  2. The thick red cable is the battery discharge line. Cut zip ties to access the cables more easily.
  3. Locate the red cable near the top of the casing. Remove existing wrap from the center of the red cable to reveal the connection point and disconnect here.
  4. Connect the ports on the short fuse to the connection points on the red cable. If using heat shrink wrap to seal, place covers around each end of the fuse cable before connecting.
    • NOTE: A spark may occur when connecting the fuse to the battery discharge line; this is normal.  
  5. Use heat shrink tape and heat gun or electrical tape to seal the connections between the short fuse and red cable.
  6. Next, locate the part of the red cable that runs along the left side of the controller casing. Remove existing shrink wrap to reveal the connection point and disconnect here.
  7. Repeat steps 4 and 5 to install the long fuse.
  8. Once complete, usezip ties to secure and gather the fuses and cables inside the casing.Ensure the waterproof gasket is in place and reinstall the cover on the controller.
  9. Discontinue use of the original chargers and fast chargers, and use the new chargers provided in this set.
    (Reminder: This only applies to Wolf King GT customers that received an affected unit, not all Wolf King GT customers).

Wolf King GT Fuse + Charger Set

  • 1 long fuse connection
  • 1 short fuse connection
  • 2 updated 84V 1.5A chargers

This replacement set is specifically for the Wolf King GT electric scooter and is an item we're offering to VORO customers for free. Please add to cart with code "FUSEFORVORORIDERSONLY" and order using your existing VORO account (email address) to redeem.

▷ Watch How To Check Out Video

Frequently Asked Questions

Who should install this set?

If you received one of the 300 Wolf King GT units that were affected by this defect, you should install this replacement set. Some Wolf King GT units that have not yet shipped were not affected. For those that were, we are pre-installing the fuses and replacing chargers before shipping to customers.

Tutorial Video: How to Install Fuses in the Wolf King GT electric scooter

Is the scooter unsafe without installing this set?

No, this is a precautionary measure recommended and provided by Kaabo and distributed by VoroMotors and other sellers to help safeguard against battery-related incidents. The Wolf King GT electric scooter has not been recalled. Only a select batch has been identified with this defect, posing a higher safety risk.

I’m not tech savvy. Can you do the installation?

Yes, you can ship the scooter to our repair shop in Los Angeles, CA to have the installation completed. You may also bring the scooter into the Los Angeles, CA or Brooklyn, NY shops to perform the installation if you live locally.

If I have an affected unit, can I return it? 

Yes, we are accepting returns for affected units of the Wolf King GT. Please reach out to us directly with your order information.

If I have an affected unit, can I exchange it?

Yes, we are accepting exchanges or trade-ins for customers who received affected units. Please reach out to us directly for comparable recommendations and to arrange and exchange.

If I ordered but haven’t received a Wolf King GT yet, will mine have this problem? 

No, all affected Wolf King GT electric scooters leaving our warehouse will have the fuses pre-installed and updated chargers included with the product. The only caveat is that if your unit was affected, you should not use any other chargers than those provided (e.g., from another brand, with another voltage/amperage, fast charging, etc.). Outside of this specific batch, Kaabo is proactively installing fuses and replacing chargers at the factory.

Can I use two chargers at once?

Yes, you may re-charge the Wolf King GT using both chargers/ports simultaneously. For all affected units, Kaabo does not recommend using any other charging device but those provided in this set. Always plug the adapters into the wall or socket first, then plug the chargers into the scooter’s ports.

Can I use chargers from another brand? 

No, it is not recommended to use the original chargers provided with the scooter or chargers developed by other brands, including fast chargers. Kaabo recommends using the updated chargers from this set only if your unit was affected.

Are electric scooters for adults unsafe? 

No, electric scooters are not inherently unsafe, but li-ion batteries can be. Most electric scooters for adults are powered by li-ion batteries. They have rechargeable cells that can withstand more charge cycles and have higher power density than other battery types – but are more vulnerable to temperature. Although in wide use, there are very few standards set by regulatory organizations that li-ion battery manufacturers are required to follow. For this reason, the quality of li-ion batteries and of adult electric scooters varies widely depending on the standards of the scooter manufacturers and distributors.

Customer Reviews

Based on 6 reviews
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(6)
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T
Tk Tran
Wk Gt Fuse Kit

Great turn around, got my fuse kit less than a week. Pretty easy to install, no sparks or shocks. Had it installed in less than 30 mins.
Now I have peace of mind!

J
J
Now you can ride your Wolf King GT Pro with a better peace of mind!

These new in-line fuses make me feel more confident in riding and charging my Wolf King GT Pro. They were easy to install, but the hardest part was getting them to fit in the ECU box without causing too much compression over everything. The scariest part is the massive spark that occurs when you complete the battery wire connections, but you get used to it when you prepare for it for the second time.

The new chargers have a brighter and larger status LED, so you can see the charging status a lot easier now. They may require a little bit of force when their plug goes into the port for the first few times, but that is expected for most new chargers in general.

M
Michal Makuch
Great fuse kit

I never had any signs of my scooter being a faulty one but it gives you the extra peace of mind when storing the scooter in your house , customer service was fantastic and I got my kit in 2 days

C
Carl Poteet
Wolf king fuse and charger set

Arrived quickly and installation was simple.

V
Victor Tineo
Fuse kit and chargers

Easy process to install..so far so good

Customer Reviews

Based on 6 reviews
100%
(6)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
T
Tk Tran
Wk Gt Fuse Kit

Great turn around, got my fuse kit less than a week. Pretty easy to install, no sparks or shocks. Had it installed in less than 30 mins.
Now I have peace of mind!

J
J
Now you can ride your Wolf King GT Pro with a better peace of mind!

These new in-line fuses make me feel more confident in riding and charging my Wolf King GT Pro. They were easy to install, but the hardest part was getting them to fit in the ECU box without causing too much compression over everything. The scariest part is the massive spark that occurs when you complete the battery wire connections, but you get used to it when you prepare for it for the second time.

The new chargers have a brighter and larger status LED, so you can see the charging status a lot easier now. They may require a little bit of force when their plug goes into the port for the first few times, but that is expected for most new chargers in general.

M
Michal Makuch
Great fuse kit

I never had any signs of my scooter being a faulty one but it gives you the extra peace of mind when storing the scooter in your house , customer service was fantastic and I got my kit in 2 days

C
Carl Poteet
Wolf king fuse and charger set

Arrived quickly and installation was simple.

V
Victor Tineo
Fuse kit and chargers

Easy process to install..so far so good