I've bought an after market Yamaha battery

C

Chargeride

Well-Known Member
Getting it next week, I'll pull it apart if I can, stupidly cheap...

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Even if your battery only lasts a year before it wears out,
(which is what apparently can happen with cheap batteries, but there's almost Never a fire.)

You've still got a battery case with hopefully a proper BMS inside so you can rebuild it with better cells.


Just a battery shell alone for me to build my own Reention Dorado battery is almost $75 CAD.


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Plus the BMS,..


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Plus I might need the battery indicator/USB circuit board,..

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And I'd want to install a BMS pin-out hookup, so I can check and balance each cell group manually,..
I've already got those parts,..


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And of course I'd need the lithium ion cells.
I'm thinking Samsung 50E 21700 cells like in my 25ah battery?


I'd do a lot more research before I bought a BMS.
That's one component that I'm not going to cheap out on along with the cells.
I don't want a fancy balancing BMS with an app to go with it.
Just something reliable thats tried and tested.
I'd be doing the cell checking and balancing myself.



I can always set my 🔋on 🔥 if I want to ?? Just plug it directly into house current.
That aughta get er done?
Fires are fun to watch. 😂
 
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There's no reason we can't all have an electric flying bicycle that doesn't start on fire.


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The flying bike only needs to be powered to get launched.

Once it's in the air, you shut off the motor and travel for free.
 
dblhelix said:
Sounds like you don't trust (electro) PAPA.
Click to expand...

We are a European-wide online retailer of electronic accessories, spare parts and consumables for electronic devices. We import compatible product solutions...
We have created a highly functional warehouse with which we are not only equipped for the future, but are also so centrally located in Europe that we can deliver our products quickly and efficiently!
Click to expand...
Buy from China, deliver to Europe since 2008.

What rings the bell is "17 Ah 36 V", which is your usual description for cheap batteries. For some reason good brands talk Wh not Ah/V.

I hope it works for CR but I would have a hard time to believe such a cheap battery would be anything good or safe.
 
I would say watt hour is a marketing ploy , they never mention the 36V because that was being used by tool companies to promote power improvements, more volts is good...

Electric cars have done the same because theres a point where more volts starts to look a bit scary.

The new 800 volt Tesla!!!

What!!!!!
 
Chargeride said:
I would say watt hour is a marketing ploy , they never mention the 36V because that was being used by tool companies to promote power improvements, more volts is good...
Click to expand...
I would rather say Wh is the only way to tell the amount of energy stored in the battery. Chinese companies use volts and ampere-hours because they want to brag about 48 or 52 volts as you described.
 
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On the other hand, I am sorry for being negative in advance. It is just the dreary weather around. I apologise, Chris.
 
Even though it quite clearly works at legal power, 36V does seem low to me, surely they will move to 48V eventually.
Though I have no idea whatsoever of any consequences this might cause for user experience.

Though even the new Dji 1000W motor uses 36V
 
Chargeride said:
Even though it quite clearly works at legal power, 36V does seem low to me, surely they will move to 48V eventually.
Though I have no idea whatsoever of any consequences this might cause for user experience.
Click to expand...
That is quite interesting. You know the saying 'Size does not matter' :) Is the voltage that important?
  • My Vado 6.0 has a 36 V, 16.77 Ah (604 Wh) battery. The peak motor power is 520 W, and the e-bike remains quite strong between 10 and 5% battery level
  • My Vado SL has a 48 V, 6.67 Ah (320 Wh) battery. The peak power is 240 W. Below 10% charge, the assistance becomes hysterically weak.
So it is not that a higher voltage e-bike must be stronger. The reason Specialized implemented 48 V on SL e-bikes is the fact it allowed the brand making a long but slim battery.
 
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