Anyone cracked open a BlendJet to see what's inside?

i opened one up trying to pop it open to replace the blade but broke the motor housing. I didn’t realize the bottom of the motor were glued in two seperate spots.
 
bought three of these for $15 each. Two work fine but the third didn’t. When i opened it up the issue was with the switch not the battery. Fixed it with a $0.40 momentary switch from aliexpress. Not all these fail with the battery.
 
bought three of these for $15 each. Two work fine but the third didn’t. When i opened it up the issue was with the switch not the battery. Fixed it with a $0.40 momentary switch from aliexpress. Not all these fail with the battery.

30 bucks for three blenders and you still spent an afternoon fixing one lmao