Re: Running a 24V vacuum cleaner from 19V only works sometimes - why?



No, SubC NiMH all in series, crap.

~2.2 Ohm NTC resistor is installed, starting the vacuum works fine, NTC gets to ~100°C after a minute or so, but I did not do any longer tests yet....

Re: Running a 24V vacuum cleaner from 19V only works sometimes - why?

I just replace the battery pack with a laptop PSU. Directly connected to be former battery cables.
The charge port is separate, I don't touch it at all.

Re: Running a 24V vacuum cleaner from 19V only works sometimes - why?

I did some more testing, now I can 100% recreate it working or not working.

1: I connect the PSU cables to the vacuum cables. Result: Motor not working.

2: I connect the PSU to the vacuum with two crocodile cables I used earier when testing. Result: It works 100% of the time.

This is not about bad connections - I wiggled both connections quite good but only the second one works.
Both cables have ~1.5 Ohm together. I also tried another cable with ~3 Ohm and it...

I have a battery powered (24V) vacuum cleaner. Now I'm kinda sick of replacing the batteries that no longer properly recharge, so I thought about replacing the battery pack with a "real" power supply.
I have an old laptop power supply that outputs 19V, 4A (Toshiba PA-1750-09) and fits perfectly inside the handle of the cleaner - very much in contrast to all other PSUs I found online for a somewhat affordable price that could output 24V and 2A (which is the current the vacuum needs when running off the battery).

Now the strange thing: When I first tried if 19V is...

Re: New Members - please post your introductions here

Well filling in account details is kinda hard when the edit page is locked...