Battery firmware lockout: Difference between revisions

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===Power tools===

Power tool manufacturers such as Ryobi and Makita are known to lock battery backs, causing good ones to fail and ended up in repair centers, or worse, landfills<ref>https://www.youtube.com/watch?v=NQ_lyDyzEHY</ref>. ~~Repair technicians who know how~~ to ~~"unbrick" the BMS are capable~~ of ~~reviving these units~~ with ~~perfect condition~~, ~~reducing e~~-~~waste~~.

Power tool manufacturers such as Ryobi and Makita are known to lock battery backs, causing good ones to fail and ended up in repair centers, or worse, landfills. Badar, a known electrical engineer, managed to recover 30 "bricked" battery pack back to normal, reducing e-waste<ref>https://www.youtube.com/watch?v=NQ_lyDyzEHY</ref>. Although 19% of them deeply discharged were no longer safe to charge. 65% of bricked batteries were purely due to software lockout with no performance impact after unbricking and recharging. Additionally, 13% had unbalanced cell, which were easily resolved by using an external power supply to bring the cells to the same level one by one, however, "unbricking" procedure is still required for normal use<ref>{{Cite web |last=Kayani |first=Badar Jahangir |date=2025-08-24 |title=Ryobi Battery Repair Guide |url=https://badar.tech/2025/08/24/ryobi-battery-repair-guide/ |url-status=live |archive-url=https://web.archive.org/web/20250915074416/https://badar.tech/2025/08/24/ryobi-battery-repair-guide/ |archive-date=2025-09-15 |access-date=2025-09-15 |website=Badar Jahangir Kayani}}</ref>.

===Electric vehicles===

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 ===Power tools===
-Power tool manufacturers such as Ryobi and Makita are known to lock battery backs, causing good ones to fail and ended up in repair centers, or worse, landfills<ref>https://www.youtube.com/watch?v=NQ_lyDyzEHY</ref>. Repair technicians who know how to "unbrick" the BMS are capable of reviving these units with perfect condition, reducing e-waste.
+{{Main|Milwaukee battery drm}}
+Power tool manufacturers such as Ryobi and Makita are known to lock battery backs, causing good ones to fail and ended up in repair centers, or worse, landfills. Badar, a known electrical engineer, managed to recover 30 "bricked" battery pack back to normal, reducing e-waste<ref>https://www.youtube.com/watch?v=NQ_lyDyzEHY</ref>. Although 19% of them deeply discharged were no longer safe to charge. 65% of bricked batteries were purely due to software lockout with no performance impact after unbricking and recharging. Additionally, 13% had unbalanced cell, which were easily resolved by using an external power supply to bring the cells to the same level one by one, however, "unbricking" procedure is still required for normal use<ref>{{Cite web |last=Kayani |first=Badar Jahangir |date=2025-08-24 |title=Ryobi Battery Repair Guide |url=https://badar.tech/2025/08/24/ryobi-battery-repair-guide/ |url-status=live |archive-url=https://web.archive.org/web/20250915074416/https://badar.tech/2025/08/24/ryobi-battery-repair-guide/ |archive-date=2025-09-15 |access-date=2025-09-15 |website=Badar Jahangir Kayani}}</ref>.
 ===Electric vehicles===