Dyson Type A Battery

thingiverse

I've got an old Dyson DC35 and its battery was on its last legs, so I started researching online and found that replacement batteries are pretty affordable from various sellers. I decided to take it a step further by building my own using the original board from my existing battery. This custom battery packs 12 LG HG2 cells in a 6S 2P configuration, which is perfect for high-current applications. Although lower current batteries might have given me more capacity due to the 2P design, I used what I had on hand, and it worked out fine. The original electronics are still intact, and I added a 5s battery tester from eBay. To build this custom battery, you'll need some additional hardware like M3 threaded inserts and M3 x 20~25mm bolts. The support material is only required for the overhang on top of the neck and the shoulder at the front of the side pieces; everything else can be bridged together seamlessly. I might remake this with thicker walls in the future, but for now, it's holding up just fine. If you're not familiar with working with lithium batteries, please don't attempt to make this – they can leak toxic chemicals, catch fire, or even explode. As a bonus, I used to be able to vacuum one room on my old battery, but now I can clean the entire house on MAX setting and still have 75% of the power left. Just a friendly reminder: some Dyson battery BMS are programmed to brick if the voltage drops below a certain level, so disconnect them at your own risk – it's always better to be safe than sorry!