Electrolux Ergorapido Lithium powered Vacuum cleaner.

[Turnip]

Hi folks,

Got one in where the 15A SMD battery fuse had popped - Replaced it and now the battery doesn't charge as the chip controlling the motor appears S/C so motor in circuit all the time.

Chip is a five pin (four pin plus tab) SMD device, but can't read anything as board has been sprayed with a plastic coating to prevent water damage. Know if I try scrape it off I won't be able to read anything - Tried before and it never works.

Wonder if anyone has thoughts ? - Thanks - Chris.

[astracat]

hi turnip
does the panel look like this
https://www.huoltopalvelu.com/Electrolux-ErgoRapido-LI-ION-18V-PCB
regards
astracat

also check thttps://www.consumerreports.org/cro/news/2009/03/electrolux-recalls-320-000-cordless-vacuums-with-faulty-batteries/index.htmhis

[Turnip]

Hi 'Cat' The very one.

Managed to discover S/C chip is PSMN017-60YS a N-FET and cheap on Ebay - Thanks - Chris.

[astracat]

hi turnip
nice find ,fingers crossed nothing else kaput
regards
astracat

[Turnip]

Hi 'Cat'

Got a pack of 6 from Ebay, so fitted one. Had drained the lithium cells over a few hours, as shorting the 15A fuse caused the motor to run, and I couldn't otherwise stop it.

Upshot was that guess the vac 'brain' assumed totally discharged cells indicated a problem so didn't try charge 'em. Guess it cuts on low batteries well before they're totally discharged.

Powered it up on the workshop supply and got it gently to 16v where the charger took over flashing three Leds out of four.

Suspect the fourth Led significant, but three Leds are still flashing so dare not press the Go button 'till I get the OK.

Machine also has a brush motor driven by another chip.

Had a Vax yesterday where the brush belt was broken, and as it had no brain, repair was nifty - Chris.

[astracat]

hi turnip
looks like you may have to charge and discharge the cells a few times to try and reset the built in charge timer inside the cell packet charge for at least 16 hours and repeat discharge/charge cycle its timer is on a pcb inside cell packet with timer point tapped off at roughly have the voltage
regards
astracat
ps  see here for an  idea on how this works also the pcb detects the type of machine thats why some laptop replacements don't charge


https://www.google.co.uk/search?tbm=isch&sa=1&ei=2lLbWsaQN4yMgAaLwpCIAQ&q=lithium+battery+inside+circuit+diagram&oq=lithium+battery+inside+circuit+diagram&gs_l=psy-ab.12...47067.51036.0.54860.7.7.0.0.0.0.126.468.6j1.7.0....0...1c.1.64.psy-ab..0.2.122...0i8i30k1j0i24k1j0i8i7i30k1.0.YvCeoP2eraM#imgrc=2N_HBgK06c71oM:

[Turnip]

Hi Cat,

Thought Vac charger would feel cells suspect, so charged them gently to 16 volts with workshop P/S where Vac charger took over and sorted to full charge overnight.

Surprisingly the whole biz worked, even the rotary brush.

Hate vacuum cleaners if they don't have a duff rubber band - Chris.

[astracat]

hi turnip
great going ,as for battery packs feel theyre just money earners for manufacters as most sealed units that have to be broken open just to try and repair
where internal psb is not available with little id on the board
regards
astracat

[Turnip]

Thanks 'Cat'

Would have been nice had any info been available, but sadly never is. Gather cleaner costs £120 new, tend to feel it's rubbish, though fashionable, as does most everything but not very well - Chris.

[leeeroy]

Look at Hoover models. There are quite small and comfortable. Considering from what I’ve read in the reviews it shouldn’t be very noisy and at the same time it's easy to remove and change the bag. You can compare them here . In fact, there are many more vacuum cleaners. Maybe you’ll go for some other.