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'''Dragonfly concedes the mechanism.''' As above, the complaint pleads that the terminal is designed so the polymer melts and the post loosens after a thermal event.<ref name="complaint" /> The certifications Dragonfly cites point the same way: the complaint states that the 100Ah battery ''"repeatedly and consistently passed the standard's most severe short-circuit test ... due to the presence of a thermal protection fail-safe."''<ref name="complaint" /> The melt-and-disconnect behavior is, on Dragonfly's own account, how the battery passes its safety test. Whether that behavior should be called a fail-safe or a flaw is a question of engineering judgment, not a question of whether the melting happens.'''Independent testing corroborates the failures.''' The technology outlet ''Hackaday'' reported on Prowse's controlled tests as they were published. A brand-new 100Ah unit's negative-terminal enclosure melted under an 80-amp discharge.<ref name="hackaday-melt">{{Cite web |url=https://hackaday.com/2026/01/16/battle-born-lfp-battery-melts-with-new-problem/ |title=Battle Born LFP Battery Melts With New Problem |publisher=Hackaday |date=2026-01-16 |access-date=2026-06-06}}</ref> A unit cycled at 49 amps, well under its 100-amp rating, drove the battery-management system into repeated disconnects while the spacer melted, and the management system ''"never puts the battery into any kind of safe mode."''<ref name="hackaday-death">{{Cite web |url=https://hackaday.com/2026/03/19/studying-a-battle-born-lfp-batterys-death-under-controlled-conditions/ |title=Studying a Battle Born LFP Battery's Death Under Controlled Conditions |publisher=Hackaday |date=2026-03-19 |access-date=2026-06-06}}</ref> A 300-amp industrial unit ''"failed violently with a cell venting and the loose BMS rattling around in the case."''<ref name="hackaday-autopsy">{{Cite web |url=https://hackaday.com/2026/02/16/performing-an-autopsy-on-15-dead-battle-born-lfp-batteries/ |title=Performing an Autopsy on 15 Dead Battle Born LFP Batteries |publisher=Hackaday |date=2026-02-16 |access-date=2026-06-06}}</ref> An earlier RV-industry report documented a field unit whose positive-terminal connection had worked loose and was measured at more than 200 degrees Fahrenheit with arcing inside the case.<ref name="rvtravel">{{Cite web |url=https://www.rvtravel.com/troubles-battle-born-batteries-youtuber-questions-safety-1240b/ |title=Troubles with Battle Born batteries? YouTuber questions safety |publisher=RV Travel |date=2025-12-18 |access-date=2026-06-06}}</ref> | '''Dragonfly concedes the mechanism.''' As above, the complaint pleads that the terminal is designed so the polymer melts and the post loosens after a thermal event.<ref name="complaint" /> The certifications Dragonfly cites point the same way: the complaint states that the 100Ah battery ''"repeatedly and consistently passed the standard's most severe short-circuit test ... due to the presence of a thermal protection fail-safe."''<ref name="complaint" /> The melt-and-disconnect behavior is, on Dragonfly's own account, how the battery passes its safety test. Whether that behavior should be called a fail-safe or a flaw is a question of engineering judgment, not a question of whether the melting happens.'''Independent testing corroborates the failures.''' The technology outlet ''Hackaday'' reported on Prowse's controlled tests as they were published. A brand-new 100Ah unit's negative-terminal enclosure melted under an 80-amp discharge.<ref name="hackaday-melt">{{Cite web |url=https://hackaday.com/2026/01/16/battle-born-lfp-battery-melts-with-new-problem/ |title=Battle Born LFP Battery Melts With New Problem |publisher=Hackaday |date=2026-01-16 |access-date=2026-06-06}}</ref> A unit cycled at 49 amps, well under its 100-amp rating, drove the battery-management system into repeated disconnects while the spacer melted, and the management system ''"never puts the battery into any kind of safe mode."''<ref name="hackaday-death">{{Cite web |url=https://hackaday.com/2026/03/19/studying-a-battle-born-lfp-batterys-death-under-controlled-conditions/ |title=Studying a Battle Born LFP Battery's Death Under Controlled Conditions |publisher=Hackaday |date=2026-03-19 |access-date=2026-06-06}}</ref> A 300-amp industrial unit ''"failed violently with a cell venting and the loose BMS rattling around in the case."''<ref name="hackaday-autopsy">{{Cite web |url=https://hackaday.com/2026/02/16/performing-an-autopsy-on-15-dead-battle-born-lfp-batteries/ |title=Performing an Autopsy on 15 Dead Battle Born LFP Batteries |publisher=Hackaday |date=2026-02-16 |access-date=2026-06-06}}</ref> An earlier RV-industry report documented a field unit whose positive-terminal connection had worked loose and was measured at more than 200 degrees Fahrenheit with arcing inside the case.<ref name="rvtravel">{{Cite web |url=https://www.rvtravel.com/troubles-battle-born-batteries-youtuber-questions-safety-1240b/ |title=Troubles with Battle Born batteries? YouTuber questions safety |publisher=RV Travel |date=2025-12-18 |access-date=2026-06-06}}</ref> | ||
'''Consumers have sued over the same defect.''' On February 13, 2026, a putative consumer class action, ''Berdner v. Dragonfly Energy Holdings Corp.'', was filed in Sonoma County, California, and later removed to federal court.<ref name="berdner">''Berdner v. Dragonfly Energy Holdings Corp.'', No. 3:26-cv-03855 (N.D. Cal.), removed April 30, 2026 from Sonoma County Superior Court No. 26CV01247. [https://www.courtlistener.com/docket/73278488/berdner-v-dragonfly-energy-holdings-corp/ Docket via CourtListener].</ref> In Dragonfly's own words, in its annual report, the plaintiffs ''"allege that the products share a uniform design defect related to the positive terminal connection that can result in overheating, premature failure, and safety risk."''<ref name="10k2025">{{Cite web |url=https://www.sec.gov/Archives/edgar/data/1847986/000149315226013635/form10-k.htm |title=Form 10-K (fiscal year 2025), Legal Proceedings and Note on Warranty Obligations |publisher=Dragonfly Energy Holdings Corp. / U.S. Securities and Exchange Commission |date=2026-03-30 |access-date=2026-06-06}}</ref><ref name="10q2026">{{Cite web |url=https://www.sec.gov/Archives/edgar/data/1847986/000149315226023103/form10-q.htm |title=Form 10-Q (quarter ended March 31, 2026), Legal Proceedings |publisher=Dragonfly Energy Holdings Corp. / U.S. Securities and Exchange Commission |date=2026-05-14 |access-date=2026-06-06}}</ref> That is a separate set of plaintiffs, represented by separate counsel, describing the same positive-terminal failure on the same battery line that Prowse described. | '''Consumers have sued over the same defect.''' On February 13, 2026, a putative consumer class action, ''Berdner v. Dragonfly Energy Holdings Corp.'', was filed in Sonoma County, California, and later removed to federal court.<ref name="berdner">''Berdner v. Dragonfly Energy Holdings Corp.'', No. 3:26-cv-03855 (N.D. Cal.), removed April 30, 2026 from Sonoma County Superior Court No. 26CV01247. [https://www.courtlistener.com/docket/73278488/berdner-v-dragonfly-energy-holdings-corp/ Docket via CourtListener].</ref> In Dragonfly's own words, in its annual report, the plaintiffs ''"allege that the products share a uniform design defect related to the positive terminal connection that can result in overheating, premature failure, and safety risk."''<ref name="10k2025">{{Cite web |url=https://www.sec.gov/Archives/edgar/data/1847986/000149315226013635/form10-k.htm |title=Form 10-K (fiscal year 2025), Legal Proceedings and Note on Warranty Obligations |publisher=Dragonfly Energy Holdings Corp. / U.S. Securities and Exchange Commission |date=2026-03-30 |access-date=2026-06-06}}</ref><ref name="10q2026">{{Cite web |url=https://www.sec.gov/Archives/edgar/data/1847986/000149315226023103/form10-q.htm |title=Form 10-Q (quarter ended March 31, 2026), Legal Proceedings |publisher=Dragonfly Energy Holdings Corp. / U.S. Securities and Exchange Commission |date=2026-05-14 |access-date=2026-06-06}}</ref> That is a separate set of plaintiffs, represented by separate counsel, describing the same positive-terminal failure on the same battery line that Prowse described.'''Dragonfly's own SEC filings disclose the risk.''' In its annual report, Dragonfly warns investors that ''"[l]ithium-ion battery cells have been observed to catch fire or release smoke and flame,"'' and that a product defect ''"could subject us to lawsuits, product recalls, or redesign efforts."''<ref name="10k2024">{{Cite web |url=https://www.sec.gov/Archives/edgar/data/1847986/000164117225001755/form10-k.htm |title=Form 10-K (fiscal year 2024), Item 1A Risk Factors |publisher=Dragonfly Energy Holdings Corp. / U.S. Securities and Exchange Commission |date=2025-03-31 |access-date=2026-06-06}}</ref> The company's estimated warranty obligation rose from $307,000 at the end of 2023 to $514,000 at the end of 2024 to $867,000 at the end of 2025.<ref name="10k2025" /><ref name="10k2024" /> | ||
No federal regulator has issued a recall or safety action on these batteries, and the defense does not claim one. The point is narrower and it is enough: the core message that these packs can overheat and fail at the terminal is substantially true, corroborated by independent testing, by a separate consumer class action, and by Dragonfly's own disclosures, and conceded in part by the complaint itself. Substantial truth is a complete defense, and the closest precedent is a manufacturer that sued a product-review organization over a critical test and lost, because sharp criticism of a product is ''"commonplace in the forum of robust debate."''<ref name="bose">''Bose Corp. v. Consumers Union of United States, Inc.'', 466 U.S. 485, 513 (1984). [https://supreme.justia.com/cases/federal/us/466/485/ Opinion via Justia].</ref> When the contested statement is a reviewer's evaluation of a product he tested, the Ninth Circuit has held a plaintiff simply cannot carry the falsity burden: ''"[a] reasonable jury could not find that Unelko met its burden of proving falsity by a preponderance of the evidence."''<ref name="unelko">''Unelko Corp. v. Rooney'', 912 F.2d 1049, 1053, 1057 (9th Cir. 1990). [https://law.justia.com/cases/federal/appellate-courts/F2/912/1049/ Opinion via Justia].</ref> | |||
== Prowse's own history with these batteries == | |||
Dragonfly's theory of motive is that Prowse turned on the batteries only after the money stopped. The dated record, including Dragonfly's own pleading, is more complicated than that narrative. | |||
Prowse first tore down a Battle Born battery in November 2019, and praised it. The complaint quotes him from that video: ''"This passes all of the tests. Okay. Finally, we have a good battery. I can actually recommend it."''<ref name="complaint" /> The complaint also concedes that this 2019 video was unpaid and that Battle Born was unaware of it before he posted it.<ref name="complaint" /> Dragonfly pleads that an affiliate relationship ran from January 2019 to October 2025, that it paid Prowse a total of about $206,000 over those years, and that it deactivated his affiliate link in October 2025.<ref name="complaint" /> | |||
The complaint's own chronology does not line up cleanly with "criticism only after the deal ended." Dragonfly pleads that ''"[i]n August of 2025, Prowse began posting negative comments about Battle Born ... [and] began asking his forum members to send him defective or failed Battle Born Batteries,"'' and that it deactivated his affiliate link in October 2025 ''"[i]n response to the growing negativity."''<ref name="complaint" /> On Dragonfly's own pleading, then, the criticism began while the affiliate relationship was still in place, and the company ended the relationship because of the criticism, not the other way around. | |||
When Dragonfly suggested his early teardowns used abused or pre-damaged batteries, Prowse answered the point on camera by buying a new battery and cycling it within the manufacturer's stated ratings, and it failed; the independent ''Hackaday'' coverage of that controlled test reported the same result.<ref name="hackaday-melt" /><ref name="hackaday-death" /> Throughout, he tore the batteries down on camera and published his underlying cycle-testing data for anyone to download, which is the factual record his conclusions rest on. | |||
== Nevada's anti-SLAPP statute is the primary shield == | |||