jingo

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jingo
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  • EcoFlow Advanced Kit review: Power your whole house with batteries

    jingojingo
    I agree that the article is a bit confusing.

    W is a unit of power which does have a time or rate component, while W/hr is used for energy - either consumption as in how much energy your house or EV is using, or capacity, as in how much energy your battery can deliver.

    BTW, most EVs now can go about 4 miles/kWh, so 14 mi is possible on 3.5kWh.

    Voltage (V) all by itself is not an indication of power. Sometimes it is called "potential" because it is not until current (amperage or "A") flows that power is delivered. A higher voltage has a higher "potential" for power at any given current. This is basic Ohms law, where W=V*A 
    OK, thanks for the corrections on the strict definitions of the terms, but presumably you agree with the heft of my post?

    And thanks for the correction regarding the EV efficiency - I got that the wrong way round.
    roundaboutnow

  • EcoFlow Advanced Kit review: Power your whole house with batteries

    jingojingo
    I really don't want to be mean, but personally I think a journalist should understand enough about what he is writing so that it makes sense.

    This is one paragraph that particularly demonstrates the lack of understanding:

    "The Advanced Kit expands the kWh from 702 to 21.6. The battery holds 7,200W and can output up to 240V of power. This energy will give you up to one week of administrated power to your home."

    (1) "the kWh (is expanded) from 702 to 21.6". Really? Anyone can see that 21.6 is not an expansion of 702.

    (2) The battery holds 7,200W and can output up to 240V of power. 7,200W is not a capacity, it is a rate of consumption. Capacity is expressed in kWh, rate of consumption in kW. It's not completely wrong to say that 240v is a measure of power, but it's not strictly correct either. My guess from reading the article is that the capacity of one unit (not the "advanced kit") is 3,600Wh (3.6kWh) which is pretty weedy but would probably power a car for up to about one mile of use (at 3.5kWh/mile, say) disregarding any electrical losses.

    (3) "up to one week of administrated power" What does this mean? The length of time until the unit discharges is dependant on how fast the power is consumed. It might mean that its self-discharge rate is so high that after a week of it sitting there, whether used or not, the stored energy has all discharged. This statement needs to be explained.

    There are plenty of other unanswered questions here. Either the journalist needs to understand the subject better, or it needs to be edited by someone who does.
    muthuk_vanalingamthtappleinsiderusersconosciutoradarthekatchiapulseimages

  • A practical guide for why spatial audio music is great

    jingojingo
    That’s all very well, but I personally don’t subscribe to Apple Music for a host of reasons that are valid to me. I am not alone n this although the article pretty much assumes that all its readers do subscribe.

    Spatial Audio has the potential to change that, but I am not aware of any way to try it without subscribing to Apple Music. Catch 22.

    if there is a way then this article should cover it. In the meantime I will continue to be ignorant of the strength of its claimed virtues. 

    And I am not about to sign up for a trial subscription that I then have to remember to cancel either, so don’t suggest that! I already have vastly too much stuff I need to remember to do!

    One other comment is that the article suggests that most Bluetooth headsets will be able to make use of Spatial Audio but only mentions Apple products as some that do. What codec or format support do headsets need to have in order that they will work? Will the Sony range work, or (my personal faves) the Anker Soundcore Liberty 4?
    neoncatbaconstangwilliamlondon

  • Jean-Louis Gassee doesn't know who an iPad is for, and thinks you don't either

    jingojingo
    I value my iPad very greatly, so my response to Gasée is "absolute humbug!" I use an iMac 27 in my home office, and anything less would simply not do the job. I totally don't understand why anyone uses a laptop in an office setting. 

    I have my iPhone for calls and light duty app stuff, but beyond that when I am out of the office I use my iPad, and it is a fantastic tool in meetings and when I need to catch up on email or anything else where a larger screen than my iPhone is required. 

    I can see that for some people a laptop is great when out of the office, but the iPad is more portable and more flexible and suits me just fine.

    Why do people like Gassee feel they need to proclaim in the way that they do? He is diminishing himself in my eyes (he is after all a flawed genius) by not appreciating that not everyone feels like he does, and some value their iPad very highly. Let them, please!
    watto_cobrajony0

  • EcoFlow Delta 2 power station review: Power and ports aplenty

    jingojingo
    OK, so this is basically an UPS in a different guise. Why not say that? Also, a big point, given that it is being sold as a "power bank" type of product, what exactly is its capacity in Wh? You mention its max output, but not its capacity. How can we work out how long it will support devices powered from it if we don't know what its capacity is? And does it have a Line Interactive function?

    This is part of an issue that really frustrates me - it is incredibly difficult to find out what the capacity is for UPS type devices. Given that we are all facing a possible electricity supply crisis this winter (certainly in Europe we may be), being able to keep our critical domestic infrastructure such as internet connections and WiFi running through long outages is increasingly a concern. But which device do we buy to support this?

    The key thing is how much power an UPS or Power Bank stores, and that information is seemingly obscured while the devices are marketed on the basis of what their peak output is. Their peak output may have been an issue in the past with computers which consumed many hundreds of watts, but nowadays you can get a wireless router (and indeed a NAS as well) which would consume in total only 20-30W, so peak output is almost irrelevant.

    What IS important is what total amount of power is stored, so you can work out how long it would run for. But getting that information is really difficult. An AppleInsider article on this subject would be REALLY valuable. You could survey the range of UPSes on the market and let us know which offers the sweet spot in terms of high capacity at a low maximum output.

    Maybe there needs to be a new category of devices produced by manufacturers - something like Home Outage Prevention devices, which are oriented for the purpose I suggest. There would be a VAST demand for such products.
    muthuk_vanalingamwatto_cobra