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Half the parts on my own Mercedes appear (from the imprint on the actual parts) to actually be made in Mexico. But if people here want to delude themselves that their Indonesian-made tat branded as Schwalbe are German made just to justify the price they paid for them, so be it... who am I to argue?

You calling my Mum a liar? Right... jackets off, and around the back for a punch-up! Seriously, it says quite clearly on their website which of their bike tyres are made in Germany. Are you seriously suggesting that a bike tyre called "Der Kaiser" is made in France? No-one but a German would...

Yes - The Kenda Kourier fitted to my own e-bike come in a K-Shield puncture proof/resistant variant, which I considered. But my normal Kourier version hasn't yet had a puncture, so I await that possibility of maybe changing/upgrading them.

Your argument is what exactly? Continental make car tyres and vehicle instrumentation (ex-Siemens VDO) for Mercedes and BMW among many others... but bicycle tyres are (according to their own website - and my Mum, who really does live just down the road from the actual factory in Cologne) made in...

Ahem what exactly? What part of "manufacturing is carried out in its Indonesian factory, which is coowned, with its Korean joint-venture, production partner, PT Hung-A." don't you understand?

Yes, for sure... Schwalbe make some odd sizes... like Brompton tyres. But most e-bikes need normal and not "weird" sizes. Prompted by d8veh's retort about other tyres seemingly lacking puncture protection, and just checking Continental Tyres own website now, Continental actually make some 50...

I agree wholeheartedly. A lot of companies make tyres that are good quality and comfortable (and puncture proof). Schwalbe don't have exclusivity. The question was in part rhetorical.

Yeah... Kenda (among many others) make puncture proof bicycle tyres too. It's not an exclusive "Schwalbe" feature.

I don't wish to flame this argument, but I don't know why people get so turned-on about Schwalbe tyres. The company may sound German (and thus impart an air of that German-made superiority), but their tyres are actually knocked out in a run-of-the-mill Indonesian factory, itself part-owned by...

When I'm out and about touring the country, I use an inverter connected to my 100Ah car (van) battery to recharge my e-bike batteries (when I can't access a normal mains socket). Even then, a very large and very heavy 100Ah lead acid car battery only charges a 400Wh e-bike battery twice (at best).

Another fine example of precision British engineering. No wonder all our manufacturing moved abroad!

That doesn't compute. A 48 volt battery needs a charger of 54 volts. A watt-meter tells you how many watts of your 504 watts you've used. Watts = Volts x Amps. So if you'd used 200 watts, you'd calculate 200 watts / 54 volts = 3.7 amps needed to fill it back up. Using a charger rated at 2...

That really is my point. And, as there still appears to be no legal requirement for an e-bike charger to operate efficiently as all your other home chargers are, it's best not to assume they are all efficient by default - and certainly not if you have an older e-bike/charger.

As you know, as with many battery chemistries (Lithium, Lead etc), charging works by applying constant /maximum current until peak voltage is reached, and then voltage is maintained and current is progressively reduced (CC/CV). That the energy consumption eventually reduces to 2/3W as the pack...

Err... no. That's the Low Voltage Directive. In Britain, that's covered by BS7671 (I am qualified as an electrician, although I retired a few years ago). What I am questioning here is the current legislation that regulates EFFICIENCY - not the safety - of chargers. Specifically, whether Chargers...

Without trying to hijack this thread, let me throw this out there to see if someone has more up-to-date knowledge than I: Battery charger efficiency comes under EU regulations, and was introduced because many SMPS battery chargers were in the old days hideously inefficient (as low as 50%). The...

Now I'm confused... You used a DC watt-meter to measure the energy being output from the charger into the battery, or a 240v AC watt-meter to measure the 240v energy the charger consumed while charging your battery? If I misunderstood and you meant the latter, then your measurement tells you...

0.5 kilo-watt-hours = 500 watts / 36 volts = 13.88Ah. It's hard to know the true capacity of any battery unless your drain it totally before charging/measuring (at least to where the BMS cuts power). Ideally, you would need to measure the discharge rather than the charge, because some energy is...

Yes, quite so... the lamps could be a little off their 40w rating. Rather than a dedicated watt-meter though (which I didn't have to hand) I use a Uni-T UT81B to measure voltage and current (measures up to 10A DC)... and these lamps do measure the rated 40w (+/- a very small margin of error). So...

This is a simple little project made in ½ hour from scrap parts I had lying around which I thought I’d share: The idea was to enable me to: 1) Partially discharge a fully charged e-bike battery to a suitable storage level for winter 2) Exercise the battery to extend its’ life when my e-bike...