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both the Nova and the Tiffany's look similar but Harris' earrings have much thinner loops and look like Tiffany's, I can't see electronics being hidden in the Tiffany's.

They contract out fabrication and maintenance to third party. For one off, you can't buy their motors nor spares. Their RN111 weighs 5.1kgs and needs proprietary controllers and cabling plus to haul 500kgs, you will need twin motors. The TSDZ8 has similar helf, you can buy it and spares on the...

Trump will never win on popular votes and he knows that after losing 74 to 81 millions in 2020. This time, I expect a large majority of independents and may be as much as 15% of registered Republican voters will not vote for Trump so I expect Trump will lose on popular votes in the region of 70...

"President Trump will deport migrants who eat pets. Kamila Harris will send them to your town next. Make your choice America. " Trump is so wrapped up in all the gossips he sees on Fox News so much so he is incapable of serious debate. That's why he lost last Tuesday.

Look at the fact. People eat weird things: dogs, cats, snakes, pangolins, birds, puffer fish, jelly fish, beetles, crickets, spiders, scarabees, worms, stinking fruits, stinking fungi etc all over the world but not in any noticeable number. If you are a factchecker, do you base your conclusion...

The Heinzmann is woefully uncompetitive against the TSDZ8.

I don't quite agree with this reasoning. Hub motors are not so good with very steep hills or very heavy loads. Their minimal recommended speed is typically around 8mph/110RPM. Below that RPM, the hub motor will likely to overheat when hauling a heavy load up a steep hill. I think you need first...

You can look at the lower gravimetric density from the voltage point of view. The issue remains that only a few companies and they are very large producers have the new technology to make denser cells. Until they make 21700 cells with their new technology, I am stuck with 5 year old technology.

The point is if only just 1 out of 20 cars or lorries is non ULEZ compliant, if you are stuck behind one of them, you breathe in a lot more NOX and PPM2.5/PPM10 than the average pollution level would suggest. That's simple observation. More importantly, you'll come home that day with a splitting...

the output is 28A continuous OK for LFP-21700-3200mAH in 12S3P (36V9.6AH) batteries. Plenty of power. The problem is those cells are still not as energy dense as those going into current models from Chinese EVs like Geely or BYD.

My regular supplier can build LFP-21700-3200mAH in 12S3P (36V9.6AH) into Hailong cases. Who would be interested? I am waiting for the new higher energy density generation of LFP cells.

Before Ulez, if you follow an old diesel car or a lorry for half a mile in London where every car is limited to 20 miles an hour, you don't need further convincing. I don't pay Ulez charge so I have no complaint. From BBC article: London air quality improved by Ulez and Lez - report - BBC News...

can you quote the datasource?

Nice concept.

here is a good LFP candidate for e-bike batteries: 32700-6AH LFP cells. Typical specs: 32700-6.0Ah_Specification.pdf (shopify.com) Each cell weighs 140g. 11S1P (1.5kgs) or 12S1P (1.7kgs) array is good enough for 16-20 miles. You may need to add an energy meter to your pack because the...

LFP batteries now reach 200wh/kg. Not far off the NMC chemistry that we use on e-bikes.

How many times do you think it takes before the switch is burned? Years ago, before the switch was made electronic soft switch, battery switch was simply in-line with the fuse.

One possible cause is the on/off control on the lcd. It is done via the lcd processor. I have come across a similar fault when the on/off button works only one way, the second pressing of the on/off button doesn't work. You have to switch the battery off and on again or unplug and plug in the...

in order to get to the track you want to cut, you have to dismantle the BMS. It's a no no for 99% of users regardless how good they are with their soldering iron. If I absolutely need a switch on my battery, I would just cut the black wire that goes to the battery out and insert a 15A switch...

My recommendation is don't mess with your battery.