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That reminds me of what happens on amazon and eBay when suppliers run out of stock. They change the prices to something silly.

the world's first SMR has been installed last August. It is planned to supply 1 billion kWH a year, enough electricity for about 500,000 inhabitants of China's largest island. It saves about 800,000 tonnes of CO2 a year. That explains why RR shares went up so quickly since.

Merry Christmas and Happy New Year. With best wishes from all of us at Woosh.

Try the locksmiths. Battery locks won't resist their tools for more than 15 seconds. They can cut new keys for you too

You can see why I don't want to sell components on their own due to their potential misuse. I am often asked: can you sell me a 48v 10ah bag battery for my BBSHD or for my 1000W front hub kit? can you sell me an Aikema 85SX for my 48V KT system? or a TSDZ2B to run at 52V. The 13S2P bag battery...

They should specify also the controllers.

it's down to performance. Even modestly priced EV models have excellent acceleration. Fast acceleration leads to more accidents.

I think it's more about air quality.

When I learned for the first time that the tests were rubber-stamped, I was flabbergasted like most members. the motor rating needs to be understood in the context of actual use. the tests are done when you are not climbing a hill or having a gale blowing in your face. They can be made on real...

Bing AI and ChatGPT don't seem to be good on reasoning. There is a lot of hype around what these systems can do. The weaknesses are usually revealed by the competition, in this case, Google Gemini. A couple of weeks ago, I watched a very impressive YT demo of Gemini. It turns out that the video...

Yes, they can be mosfets. It's difficult to see.

look between the heastsink and the PCB. There are about a dozen of them, about the size of a TO220 but without individual heatsinks. I don't know what they are without drilling off the rivets and remove the heatsink.

this is a typical BMS: you can see the thermistor, the soft switch wires The old bleed resistors disappeared, in their place, a dozen small plastic thingies in plastic cases: The heatsink is riveted. The whole thing is supposed to be replaced, not repaired.

I concur with Sturmey: I order TSDZ2B from Tongsheng. I tell them what I want (48V, 250W), they make it and guarantee it. It may be the same physical motor that they make for other vendors who claim 500W or 750W but may differ in their settings. That's between Tongsheng and those vendors.

That will be all western ice car manufacturers. They are selling into a smaller market place with prices above and performance under electric cars. Apparently, some companies offer to convert your car to electric in a day.

I am in France at the moment. I'll ask them to confirm what is in their BMS when I get back to work.

Sam Evans on his YT channel posted a video of the newest Chinese Geely's cheap EV ($10,000?, 800km range), in which the 100kWH battery got removed, then placed into a freezer at -25C for two days then placed in a burning room for 4 hours. The battery is then put back in the car and the car...

why? you can get a whole micro computer with wifi and BT for $5.

not really. Although I don't know the details, I have read some articles about active balancing. You can figure out how that works from reading. I have noticed that bleed resistors disappeared, the BMSes get smaller and smaller, now no bigger than a couple of square inches at most. The balancing...

They switch small amounts of charge to those less full cells, a bit like a waterwheel, instead of wasting the excess through bleeding resistors. As it's done automatically at any depth of charge, the mechanism is not limited to the CV charging time. The mechanism is faster and wastes less energy.