ahobbit

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  • Jackery 2000 Explorer review: Power when you need it

    ahobbitahobbit
    braytonak said:

    Wait, I was coincidentally looking into this earlier today and Jackery specifically said these were not uninterruptible power supplies. Is this a particular model that does offer this mode of operation? I’ve been looking into one for a fish tank. It seems like you can only find a traditional APC-style UPS with lead acid batteries or these, which are giant batteries. (It’s annoying that they call them generators in places.)
    Not the Jackery Explorer 2000, this is not a true UPS.

    But it has what they call a "20 millisecond UPS pass-through" feature, meaning you can connect it in-between the mains and your device, and it will automatically switch over to battery power in case of a power cut within 20ms.  They recommend to plug in just one device for this feature.  
    So this may or may not work for your aquarium.  You would need to test this.  For example if your aquarium pump uses an electronic switch, this switch may reset completely back to OFF, if the power is even just shortly interrupted.  But if the aquarium pump uses a mechanical switch, a 20ms interruption may not be an issue.
    A UPS with a 20ms interruption will likely also not work for most desktop computer systems.  They will probably crash if their power is cut for just 20ms.

    Jackery's very latest top model, the Jackery Explorer 5000 Plus, for the first time offers a true 0ms UPS functionality.
    It's the only model currently though, I think.

    Being the top model, it is a bit expensive, but I do expect this feature to trickle down over the next 2 years to many of the other models, via model updates.  As adding true UPS functionality really makes sense.
    For example the currently sold Explorer 2000 is already the second generation "2000" model, with a few features improved.  
    I would not be surprised to see an updated Explorer 2000 or Explorer 2000 Plus model at some point with true UPS functionality like the current Explorer 5000 Plus model.

    Of course I am not an insider, nor do I know Jackery's product plans, but I have been following them for years, and in the past this has happened regularly, new features trickling down from their top models to smaller models via updated model releases.

    I find their "Plus" series very interesting, which are devices that offer expandable battery capacity via additional battery packs that you can buy separately and connect in a daisy-chain fashion.
    So you can start with a basic device, and extend its battery capacity over time with one, two or more battery packs as you have more needs or money, not having to buy an all-new device with a higher capacity.

    3-4 years ago, their devices had batteries rated at just 500 recharge cycles until their capacity drops to 70%.  At which point buying a new device after some years made sense.  But nowadays they rate their batteries at 4,000 recharge cycles.  Here it makes sense to just buy additional battery packs if you need more power.

    Most "Plus" models currently also have this "20 millisecond UPS pass-through" feature.
    muthuk_vanalingam

  • Tested: Thermal conditions in the 2018 i9 MacBook Pro dramatically hampering performance

    ahobbitahobbit
    The real question is, how could this have gotten past Apple QC?
    if simple tests as the ones done by Lee, AI and others reveal a potential throttling issue where the i9 is unable to maintain the advertised base frequency, even ending up slower in some cases than last year's i7 model, how could Apple not have known about this?

    Does it mean, Apple cares more about specs on paper than real world performance for pro users?

    Didn't Apple bring in-house many pro users to have them help design the next Mac Pro?
    Why were these people not involved in the MacBook Pro i9 testing?  Wouldn't that seem obvious?
    A wasted opportunity?  
    A waste of in-house resources?

    Apple more and more seems poorly managed...
    For all the money and resources they have, they should produce better results - if it is true that they still care about pro users, as they claim.

    Either they don't actually care as much as they claim - or cannot do any better than that.
    Both are very troubling if you are a pro user.
    doozydozen1983muthuk_vanalingammike54Avieshekelfig2012williamlondondm3