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    BYD Seagull, the cheap electric car the USA almost got

    Most BYD vehicles seem to double in price as soon as they leave China ,….and that is before any tarrifs or taxes ! With no “tarrif” the proposed price in Australoa is reported to be $31,000 Au , and undoubtedly that would be for the 30 kWh base spec model before sales tax etc. ..whilst i...
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    New 250 kW EV drive package

    250 kW, 5000Nm, 75 kg, and 93% efficient at 800v. Nice little package !
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    Eternal outskirts of Moscow and beyond (LOTS of pics!)

    No, thank you for your contributions here over the years. Rest peaceful in the knowledge that in your unique way you have helped improve understanding between our cultures and countries. 👍 😴
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    Your Whours for kms

    OK, ..but this is the problem of comparing Wh/km data between users….….unless the human input is known (and precise) , or zero, the measured motor energy usage doesnt tell us much.
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    ROOT CAUSE: Hunga Tonga-Hunga Ha'apai, 2022 (VEI 5.7)

    It seems others have a different opinion.. The Hunga Tonga‐Hunga Ha'apai Hydration of the Stratosphere L. Millán, 1 M. L. Santee, 1 A. Lambert, 1 N. J. Livesey, 1 F. Werner, 1 M. J. Schwartz, 1H. C. Pumphrey, 2 G. L. Manney, 3 , 4 Y. Wang, 1 , 5 H. Su, 1 L. Wu, 1 W. G. Read, 1 and L. Froidevaux...
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    ROOT CAUSE: Hunga Tonga-Hunga Ha'apai, 2022 (VEI 5.7)

    From the OP….”according to the National Oceanic and Atmospheric Administration (NOAA).” ..are you suggesting they have screwed up, idiots, or intentionally deceptive ? Err ?..not quite true.. atmospheric CO2 is in hetrogenious equlibrium with dissolved CO2 in the oceans, (Chatelier's...
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    Your Whours for kms

    So, ..any pedal power input adding to that ??
  8. H

    1 Group has more voltage sag

    There is 200mv under load !
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    1 Group has more voltage sag

    Hmm ?, it certainly seems that you may have one or more bad cells in that group, which can only get worse ! What warranty came with the battery ?..at only 16 months you should not be seeing this type of issue, ..BUT,..20,000 km must mean how many charge cycles ?.. that may invalidate any...
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    San Francisco Cargo bike

    Unless i am reading that chart wrong, ..those results are for a TOTAL load of 100kg ? I thought the op was talking of a cargo bike with a adult rider, (175 lb) and 2 growing (60+lb) child passengers ? The bike itself weighs 30 kg and a motor + battery is likely another 10 kg Even not...
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    ROOT CAUSE: Hunga Tonga-Hunga Ha'apai, 2022 (VEI 5.7)

    Nothing a few million more wind turbines, solar Farms, and EVs, would not be able to compensate for !…….maybe ?
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    Carver Bicycle Design/Prototype ?

    Why do you think you need to design yet another 3 wheeled velo ? a quick goolag search throws up hundred of existing products, many of them Ebikes, tilting, and listed as heavy duty Not least of them is this .. https://organictransit.com/product/elf-solo/
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    Carver Bicycle Design/Prototype ?

    Just use a decent bike trailer behind an Ebike. ,! or a commercial cargo Ebike ( how much cargo do you need to carry ?) Why do you need a “tilting” 3 wheel design when you already have that feature on a 2 wheel bicycle ? The carver need to tilt because of the higher speeds it is designed for...
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    Nissan Leaf Cells Test Data

    Are you using it in the original configuration ,..355v, 168 ah ? If so, your 400 a draw ,( < 2.5 C ) , is well within its designed performance. Those cells are claimed to be an “improved” version of the original Leaf cells, which, according US Department of ENERGY study, those original 54Ah...
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    Free energy machine

    .if so, why is it that every country that has significantly introduced wind and solar as a primary generation source, have seen their RETAIL. COST of electricity increase in line with the % of RE ? EG:- Germany, UK, Australia,….and in the US ,..California ! Understand the difference between...
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    Ev trike beginner.

    ..true but,… be aware, 80% limit (12.5v) will significantly reduce your driving time/range….. and remember because they are in series (12 x 5) , you need to check the voltage of each battery individually to be sure one or more of them do not go out of ballance.
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    Replace or these still good?

    ??.. what else did you think it could be,…have you even tried to see if it acts as a brake ? Other than on a Road race bike, or BMX, i cannot imagine riding with a rigid fork these days, and that one does not look any better than cheap Walmart kit. I hope you are not intending to motorise that...
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    Inside a Dual voltage power tool pack !

    54/18v , DeWalt ..9Ah see first photo . Also.. i dont see any smoke or flames ?.. maybe this is the safe way to “kill” lithium packs ?🤔👍😱
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    Inside a Dual voltage power tool pack !

    Ever wondered what therse packs look like internally ? …or wondered what a water jet cutter can do to one ?
  20. H

    Bobcat Lawn Mower (project in progress)

    “Commercial use”.. suggests a lot of use ?. you are using <5.0 kWh of battery on a 10+ kW motor, …but even if you only use 5kWh on average,….you can expect short working days ! what are you planing to recharge with ( charging time ??) In my experience, most of the noise from this type of...
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    Anyone have experience with LiFePo4 scooter batteries?

    😱…”the authority” ? …🤔 ..controversial comment ! Did you learn that from BU ?.. They do not charge faster,.. they are also bigger and heavier than Lithium NMC /NCA etc ..Also , it has been around for 30 yrs !
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    Does this imaginary voltmeter that I want exist?

    ????..your preference i guess,….but it seems like you will just be making your life hard for an inferior result ! An electronic device could present the info in so many different ways, as well as storing the data for later analysis.
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    Thread for new battery breakthrough PR releases

    Now for something completly different !….. Grid scale storage, currently the domain of lithium batteries, Pumped Hydro, Flow cells , Thermal storage, etc ……may have a new competitor. And the core material may be a shock ! COMPRESSED CO2 ! Based on the principle that CO2 can be compressed to...
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    Does this imaginary voltmeter that I want exist?

    Well technically that is not true. the needle is just reacting to a electrical signal, and as a mechanical device it cannot be faster than that input signal,… ….but a digital display can effectively be as fast as the signal. However,..what you probably mean is you find a needle display easier...
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    Anyone have experience with LiFePo4 scooter batteries?

    Brand .? Capacity ? Voltage ? Link ?
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