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  1. C

    Sevcon gen4 firmware compatibility between size 4 and 6

    Folks, Like the topic says... is the firmware the same for the two sizes ? Basically I got a Size 6 controller, but the firmware supplied with the DCF for the motor is labeled Size 4, and I am not sure if that will cause issues. Thanks!
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    Chargery C10325 not doing CV phase?

    I don't trust Chargery products at all. I've caught my C10325 going over the programmed voltage more than once. And talking to Jason about these problems is like bashing one's head on a brick wall. Just avoid them if at all possible.
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    One BMS to rule them all

    I would say don't balance at all unless you can do it actively. Maybe just provide a port for an external balancer to plug into.
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    ME0201014201 Sevcon Gen 4

    Folks, Does anyone have ME0201014201 profile programmed for Sevcon Gen4 ? Thanks!
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    Chargery BMS balancing

    No, it's significantly less than 100A. I think 30A is the max I can do. But that BMS can't even keep up with a few amps it seems. Yup. That's basically the question in a nutshell: what can it keep up with :D
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    Chargery BMS balancing

    Thanks for all the suggestions and alternatives. The pack is built using relatively large 80Ah cells (cells, not paralleled cell groups), so even the slightest mismatches in capacity result in the need to balance for a bit, especially when the charging current is on the larger side. So for the...
  7. C

    Chargery BMS balancing

    Folks, Has anyone been able to get Chargery BMS to balance reliably ? It seems like the BMS unit heats up so quickly that most of the time balancing is not active at all. I have BMS16T and BMS24T, and the first one does a bit better, but the second one gets hot just from sitting around...
  8. C

    TIG torch for battery spot welding

    Very nice! Learned something new today.
  9. C

    TIG torch for battery spot welding

    You can't couple generators together like that - they have no ability to synchronize their waveform.
  10. C

    TIG torch for battery spot welding

    Multiprocess welders are typically expensive, and they're even more expensive if they also do AC Tig. There is ESAB Rebel AC/DC multiprocess unit that goes for over $3,000. Some folks are happy with Everlast units, but they're made in China with a questionable reputation. Personally I have a...
  11. C

    TIG torch for battery spot welding

    150A that's at the welding voltage around 10-15V, so not a crazy amount of power to worry about, under 2000W at the input. For structural aluminum work you're probably better off with the MIG (spool gun).
  12. C

    Curtis 1236SE programming with Curtis programmer

    Programmer firmware update fixed the issue.
  13. C

    TIG welding battery strips

    No, it doesn't need to come through. I specifically said - do a fusion on the edge, basically a tiny lap joint. Required duration is a product of power - you can set it up for a millisecond pulse with a larger current, or a longer or continuous with a little current.
  14. C

    TIG welding battery strips

    How much heat would make you happy ? That's the thing about Tig - it's one of the most adjustable processes. Not only you can change voltage, amperage, arc size, arc DIRECTION, shielding gas (affects heat transfer), but also as was suggested earlier you can utilize timing features of some...
  15. C

    TIG welding battery strips

    Full gas bottle (argon) is like $300 for 250cf (MANY hours of welding), refills are about $50-60. Good Tig welder is easily $3000... so no need to overemphasize the gas as an obstacle :)
  16. C

    Curtis 1236SE programming with Curtis programmer

    Folks, Hooked up Curtis 1313 handheld programmer to Curtis 1236SE supplied with HPEVs motor kit, it immediately goes into the error state. My only suspicion is the firmware is outdated on the programmer and it doesn't understand the controller's protocol. Has anyone seen this before ? Thanks!
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    TIG welding battery strips

    Dedicated Tig welders (and a few high end multiprocess ones) go down to 5A, and some even down to 3A, with voltage being on average about 10V (depends on the settings for the process). That's basically the energy of a moderate soldering iron, except much more focused and controllable. I think...
  18. C

    LEM DHAB hall effect sensors

    No, I ended up buying S/133 through a distributor in Canada. If TinyBMS folks were a bit more friendly (I asked, they refused), they could have easily exposed the sensor range as a variable in the UI - there are lots of electrically compatible v1 DHAB sensors available for fraction of the cost...
  19. C

    Wind and Solar vs Coal, Gasoline, Nuclear

    https://en.wikipedia.org/wiki/Power-to-gas
  20. C

    Elon Musk - The Master thread

    You didn't say telecom, you said "locals." The stuff talked about in CNN article is correct, and is the same me and Bill posted about above. Again, I'm not sure who is "they." What is your provider ?
  21. C

    Elon Musk - The Master thread

    Well, obviously average rural residents are telecom experts, so they'd know what's causing problems over there :mrgreen: What I was referring to is the fact rural areas often suffer from coverage issues that stem from low tower density and propagation issues (hills, woods). The low population...
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    Elon Musk - The Master thread

    :thumb: Yeah, I think I exhausted my interest in debating this :) Will wait for the roll outs, and see how it really rolls :mrgreen:
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    Elon Musk - The Master thread

    Rural is indeed typically a low rf noise environment, but 5G is irrelevant there. 26+ Ghz just doesn't have the propagation characteristics practical for rural and tower density is quite low. Implementing 5G on current 3G and 4G bands (2.1Ghz and below) won't yield any significant benefits. I am...
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    Elon Musk - The Master thread

    Should be fine with low number of subscribers. Random distribution tends to have issues when the channel approaches saturation. That's just one part of the problem. The other part is the fact this is still a very noisy environment requiring fair number of retransmits. Starlink may have to deal...
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    Elon Musk - The Master thread

    LOL! May I ask by what means ? Even if hypothetically 5G reduces latency between the cell and the client, how would the latency magically get reduced all the way past operator's network, through the interconnect(s), and to the target infrastructure ?
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