Converting the Dyson V10 from battery to AC power

[some_kid6]

For whatever reason Dyson can't design a battery circuit. I'm at 2 battery packs that don't hold a charge for more than a min or so. I'm waiting on a variable down step converter so here's my tale.

All of the unprotected batteries charge in series. That's a problem when they don't all charge at the same rate. Now I've got 1/6 batteries at 3.5v and 1/6 at 4.1v and the rest around 3.81v. It's got a simple protection circuit that does check each battery's voltage so if it goes above a threshold it stops charging and if it's below a threshold it stops powering. Conveniently since it can only charge all of the batteries at the same time that means the 4.1v battery hits that upper limit very quickly and barely has time to charge that 3.5v battery so I only get that small amount of charge time to use the vacuum before that low battery trips the lower threshold.

After some research and cracking one open it looks doable to convert. Bought a 120v to 24v/8A PSU to act as the battery pack. I'm waiting on the converter so I can wire it to all the voltage sensor leads so the circuit thinks there's a bunch of fresh batteries in it ready to use. Until then, here's pictures of my many projects wasting away on the workbench

 

[Johnny]

I'm taking the easy route for mine.

Amazon product ASIN B0CDBYDFCV

 

[some_kid6]

I'm taking the easy route for mine.

Amazon product ASIN B0CDBYDFCV

I wish I could find one of those adapters for a Ryobi battery. I might have to see if I can make an adapter for one of those adapters! I don't want yet another battery ecosystem to keep up with

edit: could go even further and have a hot swap battery OR wall adapter

 

[yard mongrel]

You could wire in rechargeable RC battery pack pretty easily.

Or buy a cheap, disposable Ryobi item, harvest the battery accepting component and kludge it onto your vacuum

 

[some_kid6]

You could wire in rechargeable RC battery pack pretty easily.

Or buy a cheap, disposable Ryobi item, harvest the battery accepting component and kludge it onto your vacuum

Unfortunately there needs to be some communication between the vacuum and the battery. Can't just slap some leads onto it and call it a day. I'm not sure just what it communicates yet but it's probably doable to fix that part.