Products > Dodgy Technology

DCS (Deep Cycle Systems) Batteries

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racemaniac:
Maybe an interesting story for Dave to participate in (Louis Rossman at the end of the video mentions Dave as a possibly interested party)


Short summary DCS (Deep Cycle Systems from Australia) is suing a small youtuber for defamation after he made a video complaining about the batteries losing capacity too quickly, and DCS not honering its warranty. The capacity loss in one case was measured by muultiple independent parties, but when sending it in for warranty, DCS came to completely different numbers with a bad way of measuring (over discharging, then overcharging, and thus measuring the charge, not the discharge). To top it off, he was able to show that DCS stealth changed their warranty policy on their site (which is the only source of the warranty, they don't print it). (With louis also showing that for some reason on the internet archive suddenly all old version of that page have been purged after the video the small youtuber made... but there are other archives that show that it happened)

Louis already did his part to get the Streisand effect started, let's keep it going :D
Here is the original video by the youtuber regarding DCS issues:


There are also multiple updates regarding his legal issues with DCS on his channel (among which some actual defation by DCS... They stating they're not suing any truthful reviewers, and making claims about his relationship to DCS, and how he would pretend he bought DCS products rather than getting them for review...)

matt4054:
This is insane!  |O

For consolidation purposes, there is another thread that was opened shortly after this one, here:
https://www.eevblog.com/forum/other-blog-specific/dcs-sues-small-youtuber-for-accurate-product-review/

thm_w:
So it says 4 years warranty, 3 years under hood.
2500 cycles >80% capacity, 100% DOD.

Was that the original or updated warranty spec? Didn't watch the full video.
They should have just specified 80% DOD to get way higher cycle life.

racemaniac:
They changed it to 70% under some conditions, and also have a dodgy way of measuring the capacity (discharging it beyond their own recommendations, and then charging it beyond their own recommendations...). There was also something about that the batteries should not be exposed to a temperature above 25°C, which is ridiculous for batteries marketed to be installed under the hood of a vehicle...

ahmtkipkip:
We are waiting for Dave to investigate the issue with teardown  :)

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