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

[Thomas Martinez]

Curious if anyone here has actualy torn down a BlendJet. These are cheap enough that people just toss them when the battery die or the motor quits, so it’s curious as to how serviceable these device are.
They are largely glued or ultrasonically welded together; there are no screw on the base, the newer models have a USB-C charging port, and the motor and battery is under the device. The blade is likely pressed onto the motor shaft rather than having it thread onto it.
The battery is likely not replaceable; rather, are the cell spot welded to a board that is difficult to access for replacement? Is it a brushed DC motor for instance?

 

[Henry S.]

yeah I cracked one open last summer when my gf's died. Spot welded shell. Used a thin putty knife and heat gun to pop the seam. Inside the battery are two 18650 cells spot welded to a BMS board. Not impossible to replace the battery; spot welder and soldering skill needed for the cells.

 

[Crazy Crane]

not worth the effort. By the time you buy the cells and spot welder you could just buy a new one

 

[Apa]

Brushed DC motor. Blade pressed onto the motor shaft.

 

[British Un]

wait, are they in series with each other or in parallel?

 

[Henry S.]

wait, are they in series with each other or in parallel?

18650 cells is in series with each other. The battery pack is nominally 7.4v. The motor draw a surprising amount of current from the cells which explains why they die so quickly.

 

[Important Iguana]

these thing are landfill fodder, change my mind

 

[Muppet Mop]

did a teardown on a v2 model last year. Consensus is spot on about the construction of the product. I pulled the blade out with a blade puller but it likely got mangled in the process. Rather than 18650 cells I find a pouch cell inside.

 

[British Un]

did a teardown on a v2 model last year. Consensus is spot on about the construction of the product. I pulled the blade out with a blade puller but it likely got mangled in the process. Rather than 18650 cells I find a pouch cell inside.

interesting, so there are two different battery configurations for these model? Is there a way to tell which one you have without opening the device?

 

[Muppet Mop]

interesting, so there are two different battery configurations for these model? Is there a way to tell which one you have without opening the device?

well not really. Mine was a black BlendJet that I got as a gift. The pouch cell was 1500mah.

 

[Spectacular Piano in the]

spent considerable time over the holidays thinking about this very device because I was not going to toss it in the landfill. Used heat gun and guitar pick method to split the shell along the base seam. Took about 20 minutes total. Battery is the same as above, but rather than 18650s I had a lipo pouch cell. Had to use clear silicone to get the device back together; looked awful but it works. The motor was fine but the battery had puffed up which is what I’ve heard occurs with these models. So yes, it is serviceable but not worth it IMO.

 

[Neo]

why do they die so quick?

 

[Crazy Crane]

why do they die so quick?

because the cells wear out; these blenders use a lot of the cells power but low end pouch cells has limited cycles.