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I would say "nearly all parts" come from China. But the real reason for delay - right now - is the increased demand on both powered and non-powered bikes, because of the continued epidemic. China have ordered people back to work 2 months ago (Wuhan lockdown ended 3 months ago). Customer service...

The reason why I didn't specifically mention RAD and Ride1Up was their substantial weight, making it difficult to pedal non-powered - one of the OP requirements. RAD City is particularly heavy at 65 lbs, and has a direct drive motor that creates a drug when non-powered. Electric Bike Company...

Aventon Pace 350 or Pace 500. I would get a step-through frame. Not as sexy but comfortable. Pros: lightweight, seatpost angle comfortable for non-powered pedaling, cheap and has shops/dealers (most bikes in this price range are online-only, no dealers). Adding lights and rear rack will...

Hi, Bolton kit costs $220: RAD upgrade kit. It can be used with varying motors but attaching the controller box on Aventon Pace will be challenging. Controller-battery connector will likely need to be replaced. This is some work. Video instruction is at the bottom right. Disregard 2 displays in...

Chinese provide in description either watts or lumens or both. Use your common sense, 3W unit can't emit 800 lumens. 1W ~70 lumens, better units are more efficient but for a cheap light 70 is close enough. Sometimes they screw up and post the wattage for a single LED, instead of 6 bigger...

This is not a quick factory fix. Controller needs to be re-programmed to allow instant throttle and PAS. Not everybody would want an instant throttle or PAS. Basically, you would need a different controller, very likely with its own compatible display. Bolton Bikes sell such a programmable...

Buy STVZO compliant lights then. Plenty of them in the US market, you don't have to be a German :). Lezyne brand comes to mind.

I would tune this process up a little. 80% is a bit high for storage, optimal SOC in this case is 40-60%.

Depends on the controller.

Yes. Battery U is a good source. I tried to link this graph earlier, it showed in Preview but disappeared later. Cycling close to the middle is the key - but e-bike pack is different from Nissan Leaf, there is a balancing issue, so it's better to charge it higher than 85%. Not discharging all...

Plenty of research. Nissan Leaf battery, DST - dynamic stress test reflecting capacity loss. In theory - yes, you could double the life of your Bosch by running 85-25% instead of 100-25%. But there are many variables, I wrote about this in another post couple days ago. There is balancing -...

Yes, common. BMS will stop the charging when battery is overheated, who knows how long it will take to do this, you don't want it to heat when not necessary, so better unplug. "Irreparable damage" is a strong language. It likely won't die or irreversibly lose half of its capacity after sitting...

Smartphones have a flashlight app (or you can download one for free), it's surprisingly bright and lasts a long time. It took me a while to realize that with a smartphone I don't need a flashlight, at least in urban environment. $2 folding fake leather protective case - you know, like a...

Lights consume very little, average ~10W total for both headlight and rear light. If you only use them after dark, 2 hours ride will take 20WH. With 600WH battery running 90%-30% charging cycle, your lights will cost you 5% of the range. This is a small penalty to avoid the risk of riding...

Wetness migrated from the nooks to circuit board. Open it and put it in the sun or run a hair drier for a while. Closed it will take forever to dry - several days in the sun maybe. Buyunbee is right, you will kill it (or kill the controller) if you keep turning it on with some wetness still...

It means full or "almost full" cycle. Think from 100% to 10% (or to whatever lowest BMS cut-off value when system shuts down). Extending the OEM projected number by running shallower cycle is another thing. You will get more full cycles when discharged/charged from 100% to 50% - say, 1300...

... Also, seal the seams and cable openings. Including seams that you don't see - clear plastic is (probably) glued to the casing from the inside, it wouldn't hurt sealing it around the glue line. Open it and let it dry. Closed, it will take forever.

Most bikes have throttle always "hot", it cuts in the moment you push the button (or half-twist the grip), and max output doesn't depend on PAS level. Some require 1/4 turn of pedals before it activates. A few are only hot when PAS>0 and the output is limited to PAS level, i.e. no throttle when...

Good point. Ebikes are nearly twice as heavy as regular bikes. With some tinkering cadence sensing can be set to work from dead stop. It won't kick in when you pedal backwards, magnets are only sensing rotation in certain direction. The 1/4 rotation delay is there because manufacturers want to...

1) Yes 2) Torque-sensing is one of 2 kinds of pedal assist. Power kicks in when it senses your effort (with torque sensing), the more effort - the more power. Another kind is cadence sensing - power cuts in when you start rotating pedals, amount of power is fixed no matter how much or how little...