Dyson Type B battery upgrade

thingiverse

So my old Dyson battery was failing, only lasting long enough for one room. I bought 12 x 18650 lithium batteries with a capacity of 3500mAh - any rated higher would be fake and should not be used. I take no responsibility for any harm or damage that may result from building this project. You are fully responsible for your actions, as lithium batteries can be extremely hazardous if mishandled. They can be difficult to extinguish in the event of a fire. Separating the battery pack is quite challenging. I found a YouTube video that shows the best way to do it - though it's for a different battery model. I decided to glue my batteries together using hot glue and then solder them, rather than using the original holder. Removing the two central batteries can be tough, as the thermistor may stick to them. This was the case for me, at least. Here are some guides that show you how to do this - though they're also for a different battery model: https://www.youtube.com/watch?v=wIQXNjNGVrk https://www.youtube.com/watch?v=HaC-P1Z5YN0 https://www.youtube.com/watch?v=hTgXVhiVieE https://www.youtube.com/watch?v=EULiLfcT2vw https://www.youtube.com/watch?v=F9UU5vzSi9w When working with lithium batteries, it's essential to be careful not to short them out, as this can cause a fire. Another concern is the thermistor in the middle of the pack, which monitors the battery temperature. You'll need to place this in the center of your pack. I extended the cables and placed it there, but it was a real pain to do. Some people claim that the BMS (Battery Management System) can die if disconnected from the original batteries. However, I didn't experience any problems, so I recommend connecting them in the correct order: starting with the negative terminal and working your way up to the positive. If you connect them in the wrong order, it could damage the BMS. After completing this project and testing it, I was able to vacuum a 4-bedroom house, including landings (carpeted), stairs (carpeted), living room (tiled), dining room (tiled), and kitchen (tiled) on high speed. The last room required almost twice the time, so I switched back to normal speed and finished easily.