Kaabo Wolf King 72v Battery Autopsy and Diagnosis

Battery pack started showing issues when the hall sensor wires shorted out, against the negative wire, (wires in the Wolf are crammed packed in a tight space) under the deck due to excessive wiring being left under the deck. This happened on the second test ride while, riding the scooter at full throttle the scooter then lost power and decelerated from gear 3 down to gear 1, then came to a complete stop. The scooter would not engage throttle when it was re-applied. When resetting the controller (by powering off and back on) I was then able to get the scooter moving again, but noticed a lack of power. The rear wheel was not operating and the scooter was traveling at half its speed. I contacted my distributor who opened a claim with Kaabo but they failed to honor the factory warranty. Kaabo denied the claim for both the main controller and the battery leaving me with a $3K paperweight. So i decided to diagnose and find the failure myself to get my scooter back on the road. I am sharing this video for everyone to learn from. If your display is flashing and you see voltage dropping, and shortly afterwards, your controller is shutting off, its possible you have either a bad BMS, out of balanced cells, apparently the shortage damaged the BMS causing it to slowly drain a group of cells. If you see black silt covering your wires this is the sign that something has shorted out.
In my experience, i would never buy another scooter from Kaabo. They have zero customer support you end up stuck paying for repairs yourself. I will replace the crummy Minimotors BMS with a Smart Bluetooth BMS so stay tuned for that video which is coming up next!
Thank you for your time.

[@stubanshuberi8793]

Excellent video brother 👍🏾

[@letshearthatagain4703]

I am starting to feel an intermittent hesitation or cutting out when I accelerate. It happens for just a moment then operates normally. It occurs whether in single or dual motor mode. Do you have recommendations? The scooter has low miles but is not under warranty, bought second hand. Wolf King GT

[@gotsmegma]

Awesome video. I had my issue resolved with my vendor, though the brand itself is very bad. I wouldn’t spend a dollar on a kaabo sticker in fear of quality issues 😭😂 I’m sorry this happened.

[@jaycarl1562]

Where did you buy this? Hope you found some form of vindication! Having one delivered soon, kind of worried now!

[@antonypartali]

Sorry i don't understand the end 🤔 How ends all these...? Just unbalanced cells of the pack?? BMS after charging the batteries work right?

[@vine2244]

So that was the fix? Replace the bms and balance all the cells?

[@SexualOverDrive]

I'm having similar issues retailer isn't helping much I guess I need to learn, help me out my wolf king dies the same

[@kevins5016]

Hay just curious if you can let me know how many cells are in parallel and what the BMS is rated at. It’s what a 20s8p for 28ah ? It’s probably got a 60 amp BMS then I would assume. I am trying to figure out why they would use 2 x 50 amp controllers if the pack isn’t capable of 100 amp continuous discharge. Maybe the peak discharge is enough to handle the short time the controllers are pulling that much. What do you think?

[@ryanmerrill8879]

I believe each controller is 50 peak. that would explain you would only need 50A continuous.

[@jaycarl1562]

Considering this video was done two years ago and you never made another video about the fix I'm thinking this battery was scrapped

[@strangetimes5993]

This is the 18650 lg mj1 cells? I thought they use 21700 on the wolf king

[@TheLondonCyclist]

I think that's for the GT

[@thecam0073]

Sorry to hear they screwed you. Kaabo is super shitty

[@smoxesk]

so let me get this right i paid 900.00 to 45mph , you paid 8.500 ppounds to go 60mph ???? i have scooter none cost me that stupid money all of them go 30mph plus some even cost me 500.00 pounds , why would i drop an extra 7k just for more acceleration ???? , scooter i paid 800.00 pounds for 28ah , 40mph single motor ????? why do people spend stupid money just to get the speed quicker i have the same motorbike suspension and high specs ?? not ev spent 3k have more than 1 ????