What value will the present/older ebikes retain with an upcoming better battery/motor tech., much faster recharge times+lighter materials ?

[Ebiker01]

See this thread about a lemon: https://electricbikereview.com/forums/threads/new-member-and-new-ebike.27737/
On welcome to new members thread there have been several other lemons that ran maybe 3 miles before having to go to the shop. Over & over.
Because of this problem I wouldn't buy a used ebike for any price. But the used ones that show up on craigslist here are asking $3000 for a 36 v battery one from 5 years ago. There are some fools out there. A lot of people won't read forums before purchase. I did.
I'm looking forward to much better batteries in future. If I could get 100 miles out of a battery, I could bicycle tour and charge at night in the motel. Two batteries is no solution; the 2nd one is too easy to steal while the rider is in the restroom, restaurant, or tourist attraction he/she traveled to see.
If a new technology battery is compatible with a 48v motor at up to 26 amps, all I have to do to upgrade is build a mount out of aluminum and splice on a pair of .157" bullet connectors. The advantage of a home conversion, there is no custom patented battery mount/connector to fit a custom patented battery. So less of the investment goes obsolete.
Did anybody see the video of the Tesla explosion in China 4/23/19? My LIIon battery is mounted out 2 feet in front, not between my legs like most integrated e-bikes. Out there it helps balance the 60 lb of supplies I put in the bags on the back.

There’s a lot of sabotage and ill intended folks when it comes to Tesla. They have basically right now a car that drives itself and makes the owner money . THe whole conglomerate of auto industry are gealous, mad and incapabale of progress as them.
The quot from E.M. “ if you buy your car , you can keep it “ as normal as it sounds is kind of like a free winning lottery ticket when it comes to such advantages !


But also With 6000cells of 18650 the risks raises exponentially .
If 2,3 cells explode then mayhem like in that video ensures. It most likely is a sabotouer event given they huge position in China and the whole industry against. People who are payed to literally drive into a T car, ruined their chargers and so many other sabotage acts.

Now if the cell is bad , With 40-60cells on an ebike is much less probability of that kind of event , if indeed it was a malfunction.

 

[Ebiker01]

Unfortunately, not going to happen.
There is something called Moore's law in electronics that is the # of transistors/ sq inch doubles every 12 to 18 months and this law held up until recently. Now, we have gone to 7nm chips, it is not possible to shrink the transistors anymore.
1kw batteries that can be recharged in 15 mins would be near impossible on a bicycle for at least the next 5-8 years. Such fast charging needs liquid cooling and very complicated BMS and power electronics.

My goal is to use the bikes I have so extensively that their price/resale value etc doesn't matter because I have gotten much more than what I invested in.

E-bikes come under areas of technology that are vulnerable to battery and motor developments. As a result, we will continue to see better/stronger/lighter motors in some segments and battery energy density will continue to improve but nothing drastic for the foreseeable future.

Tesla recently upgraded their drive-train to eek out 350+ miles of range and their new batteries starting 2020 would be able to go for 1 million miles.
Their semi truck drive systems are guaranteed for 1 million miles and soon the battery will also be. That kind of longevity, usage, performance can not be put into a bicycle.

It is a 2 wheeled bicycle that goes from A to B and it has great benefits and limitations but trying to make into something fancy would not be economically feasible.

I did read about the upgrade to 370miles for model S, impressive !
There is a Swiss co that already has BIG lion bat. Improvements currently in production and also working on mass market them.
Innolith
But it is up to them when and how it will released.

 

[Mr. Coffee]

Although bicycle still has the fundamental of two wheels, the components around it have been vastly changed due to technologies and they will continue to evolve. Looks at how the suspension, frame materials, Internal Gear Hub, Pinion Gear Hub, Ebike motors, belt drive, Ommi system, GPS tracking ...ect are helping to improve our cycling experiences. Yet, we still have these old hand build bicycle folks exist (which is the good thing). Of course these hand build bikes are not cheap but they do have customers.

Suspension bikes have been around for thirty years. (Actually, I stand corrected -- there was a spring-suspension bike sold in the United States in 1885!)
Carbon fiber frames were introduced by Kestrel in 1986.
Internal geared hubs were first patented in 1896.
Pinion gearboxes were introduced around ten years ago.
Belt drives for bicycles were patented in 1890.
Disc brakes were introduced in the early 2000's.

So I'm sorry, most of the "innovations" you have described are actually quite old. And I don't know if Omni or GPS trackers are things that make an existing bike "obsolete".

 

[Mr. Coffee]

...has 1kw battery, 750watts motor , 10-15min. RECHARGE time plus ...

This part of Ebiker01's post caught my eye.

Charging a 1kwh battery (I think he meant 1kwh) in fifteen minutes would draw 4 kilowatts. Most household outlets are limited to 15 amps, so can draw at most 1800 watts. So you'd need to wire a custom outlet in your house to charge that hypothetical bike. At a minimum you'd need a 50amp circuit.

Note that 4 kilowatts is comparable to what a good-sized electric oven draws when running at 350F.