Hoover Linx BH50000 Lithium Vacuum Battery Repair

[@nealjessup8834]

Worked perfectly. I just taped wires to a regular small battery charger to get some charge in, taping them to the first set of side terminals, then second, then third until they all measured some charge. Also shorted 1&2 and 1&5 pins on the board per the other video to reset the counter. Thanks.

[@tuhinbhuiyanweb]

How do you do reset on Onepwr 4v latest battery?

[@robert574]

I rewrote this and deleted the old posts 1. Vacuum will not operate, and battery pack will not charge (it was having less of a charge over time). 2. Bench test of battery: all cells were over 4V, the output of the pack was over 18V but disappears when a small load was applied. 3. Changed the two mosfets. Vacuum still would not operate. 4. Watched the video and performed the circuit board short on 1-2 and 1-5 pins. 5. The pack immediately began discharging the batteries through the 750 ohm resistor R20 (got real hot). Someone else commented on the same thing. Look at the board and find the (3) resistors each marked 750. It is the smaller one out of line with the other two. Don't put your finger on it. 6. Put it outside until next day. Batteries stopped discharging at 2.75V on all cells so the discharge protection is still working. The resistor looks ok. Still will not charge, just flashes. Performed the shorting reset again with the batteries discharged. Put a charge back in each battery individually and they still began to discharge again through 750ohm resistor. I put it in the vacuum and it ran a few seconds so I think a new battery will fix the issue. 7. New battery arrived ($37 on Aliexpress) and it works great again. I guess my old pack was just too far gone. If you're reading this, I hope the shorting method works on yours. The price of these vacuums has only gone up and it's still worth buying a new pack to keep it going. Don't forget to pull out that piece of foam at the top of the dust cannister and wash it out and use a long pair of hemostats (try Harbor Freight) and pull the junk out of the bottom opening. It always works like new again after that. Cheers.

[@eeledahc]

Hi, I got one of these vacuums and I don't have a battery or a charger. But I have some other battery packs that I can use to test it. I was seeing in the video that instead of giving the full 18v from the terminals, it splits them, left terminal around 8v middle ground and right 8v, is that correct? I don't want to send full 18v from a drill battery and burn it up. I'm guessing for low it uses one sides 8v and high uses both together? Thanks for any input!

[@tipstricksreviews4481]

Chad Lee terminals on back of logic board should give 18v.All cells connected series. You can measure cells individually and replaced defective ones. Actually better to change all cells with new ones if you cant measure capacity of old ones.

[@eeledahc]

@@tipstricksreviews4481 Sorry, I don't have a real battery and I was wanting to test the vacuum out before I try and buy one. See at 4:43 to see what I mean about 8v on the outside terminals and I assume the negative in the middle.

[@tipstricksreviews4481]

Chad Lee if you see 8v from the same terminals I measured, some of your batteries are dead. Try measures individually to understand which one. You can try to shock dead batteries with a 9v or 12v power supply(don’t over heat or charge)

[@eeledahc]

@@tipstricksreviews4481 Thanks

[@DidYouReadEULA]

Thank you!

[@MedinaChuckie]

What model and make is that charger please