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The charger may produce 7W-10W heat, even a small fan can dissipate that much heat with ease.

one possible step in the future evolution is a kind of Borg, humans with machine implants, it can be accidental but we are very capable of self destruct.There are plenty of capable nutters out there.

you can gain an insight to the conversion efficiency of the charger by checking the power consumption of your charger as I suggested earlier. The efficiency can be derived from this formula: Yield = battery voltage * 2A / observed power consumption. eg, if battery voltage = 40V and power...

the genie is out of the bottle, flecc. The fundamentals are clear: machines are potentially zillions of times more capable than human brains and human muscles. If you look at Moore's law, it will continue to be approximately valid for another 50 years then something else may replace it, computer...

I use these chargers all the time. When the charging is finished, their power consumption drops down to 2W-3W, that is just to show how little wasteful they are. I used to design high power amplifiers for pop bands in my younger years, so am quite aware of progress in switch mode circuits.

that outcome is not guaranteed. Humans have created the information technology that can escape the earth. Look at any large installation. More and more people are employed to do less and less. AI's speed of progress is exponential. A thousand years from now, AI can potentially have wiped us...

I think the threat is more pernicious than automated weapon systerns. Today AI machines can learn playing games and in a few hours, play better than the best of humans, in a decade or two, machines can learn to understand any human languages, maybe even animals' languages, they can surpass our...

switch mode chargers have always been very efficient, more so with CPU control. 85% would be their minimum efficiency, 90% is usually the case. Yo can probably estimate the heat loss by checking the battery's voltage while charging, but as a quick estimate, if you have a 2A charger, at 2A, your...

then your battery is a good 17AH. 35.5V corresponds to 35% remaining charge.

that result does not mean much, only that you have charged your battery roughly 450WH, The capacity of a 17AH battery is 612WH, 450WH is roughly 74%. You battery could have 24% charge before charging. To be sure, measure that voltage of the battery before charging then post the result.

it can hide itself on the internet. that's where the danger lies.

I have got the TSDZ2 without the throttle on one of our test bikes. Loved it. It's lightweight and dead easy to fit. Just one cable to the handlebars for the LCD and one cable to the speed sensor. The only drawback is the lack of a throttle, you have to work a bit to climb steep hills, that's...

Interesting possibility. If Poland leaves the EU, would the UK offer Poles unconditional FOM?

it's fair.

they don't need to win. Their current actions will turn off would be importers and rattle existing ones. The end result is the volume of imports will reduce next summer.

sorry! yes, it will, it's a standard part. 26" rim.

in a good way, I hope!

A new BPM motor costs £175, second hand may be £75-£100. it's difficult to find a buyer for just the wheel. If you have a donnor bike, it may be worth converting it using the BPM motor wheel and buy a kit like you were planning to do.

we have stock of 7-speed and 8-speed cassettes and freewheels to sort out various combinations. If your bike has 7-speed, I fit a 7-speed freewheel to the BPM, 7-speed cassette to the XF08C, etc. I am currently out of 36V Lishui HL1260 17A controllers (that go to the cradle of the HL battery)...

I received a notification on anti-dumping today: "The investigation was announced in the Official Journal ref. C440 dated 21.12.2017, relating to imports of cycles, with pedal assistance, with an auxiliary electric motor, originating in the People’s Republic of China. For information only, the...