Stefan Mikes
Gravel e-biker
- Region
- Europe
- City
- Mazovia, PL
I doubt you're charging your cell phone with 4 ampers or more. My chargers are all 2 A. However, it is only 3.75 Ah battery. Easy to charge fast.
Why aren't there quick chargers for ebike?
- Thread starter Timpo
- Start date
The problem I see is the cheap chargers just don't last as long. They may be fine for not causing fires, maybe, but why buy a cheap charger and possible have it die right before a ride. I don't like buying twice. I paid a lot of money for my bike and don't like going cheap on important electrical parts. If my charger that came with my bike die's, I will buy a satiator for it's quality and higher amp rating.
Stefan Mikes
Gravel e-biker
- Region
- Europe
- City
- Mazovia, PL
My Huawei is 2 A and it is this year's charger. YMMV.
Ebiker01
Well-Known Member
Yep, it has a 10amp Charger. That’s probably the BEST ebike or moto ebike as of right now.
Fingerprint display and other features...
Ebiker01
Well-Known Member
Mine was 2amps. After 7-8months I had enough of it , bought thE Luna @105$ ,5amps then finally after another 6-7weeks spent on a Satiator.@325$, up to 8amps.
Luna is the Backup one now.
Ebiker01
Well-Known Member
I think b/c they know that most batteries are 10-14.6 amps and most batteries BMS would stop a charge at higher then 0.5c , So they did it up to 8amps for safety.
But even with a 11amp battery , charging at 10amps once in awhile is fine.
We could write to Grin and request a faster one. They are Present in the endless sphere forum. If 10people request it, they could change some parts inside for custom made ones .
^This.
They don't like taking too high charging current.
"C" is used in 12V domain, I don't see this term used very often in bike batteries. Though I agree, 10A charging with 10 AH battery would be the point where where my wallet would scream alarm.
Ebiker01
Well-Known Member
Is not available anywhere ! The Flyon ebike
Stefan Mikes
Gravel e-biker
- Region
- Europe
- City
- Mazovia, PL
Against common prejudice, we still are in 2019, and Flyon will only be available in 2020
In the beginning of the cycling season. Haibike is clear about it. Pre-orders are taken.
Manu
Active Member
- Region
- Europe
- City
- Spain (Galicia)
HAIBIKE FLYON TQ 120, CHARGE FAST, THE NEW
a battery recharge patent with pedaling whether it is up or down the hill or flat.
excelent to cicloturist.
www.iberobike.com
a battery recharge patent with pedaling whether it is up or down the hill or flat.
excelent to cicloturist.
Las nuevas bicicletas eléctricas 2020 se cargarán dando pedales - Iberobike
Mediante nuestro propio esfuerzo, por poco que se realice bajando, nos olvidaremos de tener que enchufar nunca más nuestra ebike para recargarla.
www.iberobike.com
Explorer-1
Have bike, will travel
- Region
- USA
- City
- Boston North Shore
You can't make any sense if you are talking about fast charging and not providing the 'C' rate. The C-Rate is used for battery packs of all voltages, not just 12V. The manufactures specifications are given for the Battery as well as a nominal rate used during capacity testing, or the individual cell if that is what they are selling (e.g. various 18650 cells). If you are talking charging you need to talk 'C' rate unless you are limiting the discussion to a single battery where the specifications are known.
"Fast Charging" by itself means nothing. What is Fast.... it varies by battery... and... is it charging faster than the recommended rate? Or is it just charging at the recommended rate because most stock chargers charge at less that the recommended rate for the Ampere Rating.
Some batteries can be reconfigured during charging (S/P configuration) to allow for faster charging. This allows the current to remain low, but the voltage to increase so the power is greatly increased without exceeding the recommended charge rate for the individual cells. Another approach is to use an internal Dc/DC converter to convert the input power to a lower voltage and higher amperage so externally the current is kept low.
Technically on a battery with a high Average rating, an 8A charge may not be a fast charging if it is an 8P or greater battery configuration, but if the bike vendor only gives you a 2.5A charger then you will think 8A is fast charging.
This is why in the last line of the previous post I included an example with battery charged at 1C rate.
To my observations, vast majority of bikers haven't heard this term, they didn't have a course of physics, don't understand basics of electricity and need to be explained/reminded the difference between amps and amp hours, energy and power. After explaining they sometimes "remember" but still don't understand because again, they didn't study.
Ebike manufacturers rarely mention recommended C rate in users manuals, or other charging details like 30-95% usage or 50% storage, for the reasons mentioned above. Running a small business myself, I've learned not to tell the customers too much because they get scared of things they don't understand.
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I have done a considerable amount of research on a very specific application. The link to the thread is:
electricbikereview.com
EBike Quick Charge: Ultra-fast charging battery to substitute for Specialized SL Extender battery? Logarithmic Charging Strategy.
This post explains my intent. I talked with Specialized Boulder at length. They could not answer my question. I am looking for a "Touring Battery", "Opportunity Battery" or "Logarithmic Charging Battery". A battery that can quickly recharge several times per day, without concern for range...
electricbikereview.com
Oski1997
Active Member
- Region
- USA
- City
- San Diego
Why aren't there quick chargers for ebike?
I was looking at cell phones, and some of the largest smartphone companies like Xiaomi and Vivo have introduced quick chargers that can be charged 0% to 100% in 13 min to 17 min.
Somebody here on EBR said that RC cars, boats or airplanes can be charged from 0-100% in 15 minutes. (give or take)
Tesla can be charged 0-50% in 20 minutes. (0-80% in 40 min. and 0-100% in 75 min)
As far as I know, ebikes typically take hours to charge, you can't just drop by at coffee shop and charge it for like 15 min (like people do on cell phones and laptops) and go.
I know there are "quick chargers" for ebike, but that usually means your 6 or 7 hour charge may become 3 hours. (0 to 100%)
UPDATE: Feb 15, 2020Why aren't there quick chargers for ebike?
I was looking at cell phones, and some of the largest smartphone companies like Xiaomi and Vivo have introduced quick chargers that can be charged 0% to 100% in 13 min to 17 min.
Somebody here on EBR said that RC cars, boats or airplanes can be charged from 0-100% in 15 minutes. (give or take)
Tesla can be charged 0-50% in 20 minutes. (0-80% in 40 min. and 0-100% in 75 min)
As far as I know, ebikes typically take hours to charge, you can't just drop by at coffee shop and charge it for like 15 min (like people do on cell phones and laptops) and go.
I know there are "quick chargers" for ebike, but that usually means your 6 or 7 hour charge may become 3 hours. (0 to 100%)
My Yamaha Civantes’ quick charger can charge my 500wh battery from 0-75% in two hours.
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Oski1997
Active Member
- Region
- USA
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- San Diego
It’s also on Yamaha’s website. I don’t know why Yamaha only mentions the quick charge on the Civante. Is the BMS (battery management system) used in the batteries for the Civante different? I hope not, because I bought an extra battery that wasn‘t designated as a Civante battery. Hopefully someone with another model (Wabash, Urban Rush, etc) can confirm that their bikes programming can also charge their batteries 0-75% in 45 minutes.Initially I was like no way, then I looked on this website.
Yamaha External Battery Charger - Electric Cyclery
This sturdy 4 Amp Yamaha battery charger is specifically made to optimally charge Yamaha external-mounted electric bike batteries. The Yamaha charger is only for use with Yamaha electric bike batteries including the CrossCore, CrossConnect, Civante Urban Rush, Wabash and YDX Torque. Includes...www.electriccyclery.com
It says 0-75% in 45 mins
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You also don't have to go with a big brand unique battery/charger setup to get "fast" charging, there are some common commercial options. Grin Technologies for example specs their common downtube 36 or 52v 21700 series batteries (which include a good 40a bms) as being able to be charged at 8 amps. So using an appropriate 8a charger the 52v/14.5 ahr model battery could be given a normal full charge (20-100% or ~600w) in under 90 minutes. That could even be workable for something like long distance or multi day rides (by carrying a simple lightweight 58v/8a 110/220v charger to use at 60-90m rest stops).
I have the Grin 52v/14.5ahr battery and for my normal single ride usage I charge it with a Luna Advanced charger (up to 5 amp) which is sufficiently fast enough for me, and still gives me the ability to regularly baby the battery for long life (using the slower charging, stopping before 100%, etc.).
That said, if I was going to invest in a big battery with fast charging capability that I was going to heavily rely on and use daily (always fast charging it), then I'd sure want a really well designed and integrated configuration (battery + charger) from a big name with a good warranty.
I have the Grin 52v/14.5ahr battery and for my normal single ride usage I charge it with a Luna Advanced charger (up to 5 amp) which is sufficiently fast enough for me, and still gives me the ability to regularly baby the battery for long life (using the slower charging, stopping before 100%, etc.).
That said, if I was going to invest in a big battery with fast charging capability that I was going to heavily rely on and use daily (always fast charging it), then I'd sure want a really well designed and integrated configuration (battery + charger) from a big name with a good warranty.
Oski1997
Active Member
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- USA
- City
- San Diego
especially with a 3-year bike/battery warranty
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Oski1997
Active Member
- Region
- USA
- City
- San Diego
McLewis, for some reason, Yamaha never mentioned the quick charge feature on the older models. It only just mentioned it on the Civante. Do you own a Yamaha ebike (Wabash, Urban Rush Torc, etc)? If yes, can you confirm that your battery can be charged 0-75% in 45 minutes? I’m wondering if the BMS (battery management system) on the battery in the Civante is the same as the older models.
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