Deep Cycle Systems: Difference between revisions

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|Website=https://deepcyclesystems.com.au/

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~~{{Hatnote|This article is about the battery manufacturer. For other uses, see [[DCS (disambiguation)]].}}~~

'''Deep Cycle Systems''' (DCS) is an Australian manufacturer of lithium iron phosphate (LFP) batteries for off-road, marine, solar, & recreational vehicle use. The company is notable for suing independent YouTuber Stephan Fischer for [[defamation]] after he published reviews documenting battery degradation & misleading warranty changes; the District Court of Queensland ruled that DCS had no standing to bring the claim.<ref name="judgment">{{Cite web |author=Byrne KC DCJ |title=Deep Cycle Systems Pty Ltd v Fischer [2025] QDC 25 |url=https://www.queenslandjudgments.com.au/caselaw/qdc/2025/25 |website=Queensland Judgments |date=11 Mar 2025 |access-date=28 Mar 2026}}</ref> Independent testing by the ARENA-funded Canberra Battery Test Centre found a DCS battery dropped to 57% state of health after roughly 1,100 cycles.<ref name="arena">{{Cite web |author=ARENA |title=Public Report 12 (Final Report) - Lithium-ion Battery Testing |url=https://arena.gov.au/assets/2018/05/lithium-ion-battery-testing-public-report-12.pdf |website=ARENA |date=Mar 2022 |access-date=28 Mar 2026 |url-status=live |archive-url=https://web.archive.org/web/20230428135852/https://arena.gov.au/assets/2018/05/lithium-ion-battery-testing-public-report-12.pdf |archive-date=28 Apr 2023 |format=pdf}}</ref>

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===Defamation lawsuit against YouTuber===

{{Main|DCS sues small YouTuber for accurate ~~product~~ review ~~showing battery issues & misleading warranty~~}}

On 2 May 2024, DCS filed a defamation lawsuit against Stephan Fischer, the creator of AllOffroad 4x4 Adventures TV, in the District Court of Queensland. Fischer had published video reviews between August & December 2023 documenting battery degradation & warranty discrepancies.<ref name="judgment" /> The District Court ruled against DCS on 11 March 2025, finding that DCS was not an "excluded corporation" under section 9 of the ''Defamation Act 2005'' (Qld) & therefore had no standing to sue for defamation. The court found DCS failed on both the employee count test & the associated entity test, citing financial intermingling between DCS & Energy Tech Electronics.<ref name="judgment" />

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 |Website=https://deepcyclesystems.com.au/
 }}
-{{Hatnote|This article is about the battery manufacturer. For other uses, see [[DCS (disambiguation)]].}}
 '''Deep Cycle Systems''' (DCS) is an Australian manufacturer of lithium iron phosphate (LFP) batteries for off-road, marine, solar, & recreational vehicle use. The company is notable for suing independent YouTuber Stephan Fischer for [[defamation]] after he published reviews documenting battery degradation & misleading warranty changes; the District Court of Queensland ruled that DCS had no standing to bring the claim.<ref name="judgment">{{Cite web |author=Byrne KC DCJ |title=Deep Cycle Systems Pty Ltd v Fischer [2025] QDC 25 |url=https://www.queenslandjudgments.com.au/caselaw/qdc/2025/25 |website=Queensland Judgments |date=11 Mar 2025 |access-date=28 Mar 2026}}</ref> Independent testing by the ARENA-funded Canberra Battery Test Centre found a DCS battery dropped to 57% state of health after roughly 1,100 cycles.<ref name="arena">{{Cite web |author=ARENA |title=Public Report 12 (Final Report) - Lithium-ion Battery Testing |url=https://arena.gov.au/assets/2018/05/lithium-ion-battery-testing-public-report-12.pdf |website=ARENA |date=Mar 2022 |access-date=28 Mar 2026 |url-status=live |archive-url=https://web.archive.org/web/20230428135852/https://arena.gov.au/assets/2018/05/lithium-ion-battery-testing-public-report-12.pdf |archive-date=28 Apr 2023 |format=pdf}}</ref>
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 ===Defamation lawsuit against YouTuber===
-{{Main|DCS sues small YouTuber for accurate product review showing battery issues & misleading warranty}}
+{{Main|DCS sues small YouTuber for accurate review}}
 On 2 May 2024, DCS filed a defamation lawsuit against Stephan Fischer, the creator of AllOffroad 4x4 Adventures TV, in the District Court of Queensland. Fischer had published video reviews between August & December 2023 documenting battery degradation & warranty discrepancies.<ref name="judgment" /> The District Court ruled against DCS on 11 March 2025, finding that DCS was not an "excluded corporation" under section 9 of the ''Defamation Act 2005'' (Qld) & therefore had no standing to sue for defamation. The court found DCS failed on both the employee count test & the associated entity test, citing financial intermingling between DCS & Energy Tech Electronics.<ref name="judgment" />