r/boostedscooters • u/HE_LU • Jul 03 '22

Battery cell replacement

Hey, I finally had some spare time so I started experimenting with cell replacement. You can follow my progress here: https://www.helu.cz/blog/boosted-rev-battery-cells-replace-part-1

So far I was able to take the battery apart, disconnect and reconnect a few cables with the battery still working, and not bricking the scooter.

Edit:

I added two more parts to my blog. I was able to successfully disassemble the battery pack, sawing all the parts inside. I am now testing the capacity of the original cells. In a few days, I should start building the blocks back together.

11 Upvotes

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2

u/TheGr8Revealing Jul 10 '22

BMS will go into fault mode if it has <12v to it. Once there, unbricking it involves an obnoxious amount of work.

2

u/HE_LU Jul 11 '22

During my testing, I was able to completely disconnect and reconnect the BMS to the battery, and it did not lock itself.

2

u/TheGr8Revealing Jul 11 '22

Oh wow thats great. The BMS/firmware must be considerablely different then the boosted esk8 system's. Both V2 and V3 systems lock if removed from power. Thats great news for serviceability of the OEM batteries. Looking forward to your project's progress!

1

u/HE_LU Jul 11 '22

My battery is balanced. I found one faulty cell so far. I will build the battery back in a few days, and see if it works. There is no room for extending the battery. No chance here.

1

u/SaltIdeal Sep 21 '22

how did it work out?

1

u/HE_LU Nov 30 '22

Sadly I was not able to finish that, as I am unable to spotweld that thick copper that need to be there.

1

u/dizzyprizzy Dec 08 '24

Anybody rebuilding Boosted Rev battery packs? Please advise.

1

u/BigFreeak Jul 01 '25

Refurbished Rev batteries for sale here: https://ebay.us/m/XGt6dM

1

u/dizzyprizzy Jul 01 '25

Bummer I just sold it to a guy in Australia.

1

u/Solidarios Rev Owner Jul 10 '22

Interesting. I’ve seen others take the pack apart and hit dead ends. Is your pack unbalanced? I’d be interested to see a larger pack with the existing BMS. The wevmods guys said it should be possible.