DIY: Range extender for Levo (and Kenevo)

[Tasa]

Hello All,
thank you Villho for detailed information "on how to" build range extender.
I have made it for Bosch system and it works. Just I together with my friend electronic engineer created PCB with two Ideal Diodes with second battery disconnection function.

I have installed it to 2021 Focus Throne eMTB.
For additional battery connection I have bought original second battery wiring kit (p.n.:0275007930).
The system works quite fine, but sometimes I have 550 error (after restart of the systems, error codes disappears).

The Diode should work for all types of bikes. I have already tested with bosch, Yamaha systems. If it works with Levo,Yamaha and Bosch it should work with others as well.


If someone would like get more info, can contact me.

 

[iamanej]

I've bought a 480wh extender battery for kenevo SL from VOLABIKE and I must say that the bag is ugly as f*** and impractical to put on and off after usage.
After all you don't want to have 1,8kg extender battery on for every ride, just for planned longer ones (stock 320wh + 480wh extender = 800wh).
Does anyone know where to buy some kind of a simple lock similar to FIDLOCK system for watter bottles so I would make a custom box for the battery which would simply attach/detach after usage?

 

[SEBA]

I've bought a 480wh extender battery for kenevo SL from VOLABIKE and I must say that the bag is ugly as f*** and impractical to put on and off after usage.
After all you don't want to have 1,8kg extender battery on for every ride, just for planned longer ones (stock 320wh + 480wh extender = 800wh).
Does anyone know where to buy some kind of a simple lock similar to FIDLOCK system for watter bottles so I would make a custom box for the battery which would simply attach/detach after usage?

just use the ugly bag , ride your bike, and you will find it nice as the ride will be cool

 

[Electricmtb777]

I've bought a 480wh extender battery for kenevo SL from VOLABIKE and I must say that the bag is ugly as f*** and impractical to put on and off after usage.
After all you don't want to have 1,8kg extender battery on for every ride, just for planned longer ones (stock 320wh + 480wh extender = 800wh).
Does anyone know where to buy some kind of a simple lock similar to FIDLOCK system for watter bottles so I would make a custom box for the battery which would simply attach/detach after usage?

I want to buy that battery but they don’t appear to ship to America?

 

[iamanej]

I want to buy that battery but they don’t appear to ship to America?

I do not know cause I am from EU. Try with some local shipping companies

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[Tasa]

I want to buy that battery but they don’t appear to ship to America?

Hello. What brand of e-drive system do you have?"

 

[iamanej]

Hello. What brand of e-drive system do you have?"

KSL

 

[Tasa]

KSL

And e-drive system brand?

 

[iamanej]

Spec 1.1?

 

[ficorama]

Hello.
as far as I've been able to notice so far, the m510 is about 20% stronger in peek than the turbo levo, but the brose is more drivable-smoother. what's your opinion?
according to what you wrote to me, the m820 is not far behind the brose motor.

the only thing I can think of is the problem, there is no Specialized service in Zagreb anymore. I have to go to Slovenia for service. about 200 kilometers. so I would assemble the cef50 so I can repair the bike myself.

 

[Moreteen]

Hi, I have the Range Extender of Dany de Neuve.
This part on the pic is part of the cable and the reason why my ext. battery doesn`t work anymore.
Does anybody know if this is an ideal diode? I also removed the chassis. See the other pic. What the hell is this?
Maybe just a Schottky diode?

Greetings Moreteen

 

[Moreteen]

Ok, the Schottky diode worked with the the connection diagram above.
Greetings, Martin

 

[lisalis]

idk if it's the right thread but i've heard from my dealer that it's basically not possible to replace the battery in a specialized brose motor if it's not an OEM ??
I was curious if i would've been able to get a battery case basically and just install customs cells to make a second battery ? Anyone knows ??

 

[Yetidriver]

idk if it's the right thread but i've heard from my dealer that it's basically not possible to replace the battery in a specialized brose motor if it's not an OEM ??
I was curious if i would've been able to get a battery case basically and just install customs cells to make a second battery ? Anyone knows ??

A parallel battery works perfectly with the Spezialized Levo. I had 5 years ago built a 540W extender battery with 2 Ideal Diodes from Re-Voltage. Now I am currently working on a 880Wh battery for mega long alpine tours. I hope everything works this weekend.

 

[randycpu]

A parallel battery works perfectly with the Spezialized Levo. I had 5 years ago built a 540W extender battery with 2 Ideal Diodes from Re-Voltage. Now I am currently working on a 880Wh battery for mega long alpine tours. I hope everything works

Photos?

 

[Yetidriver]

Photos?

 

[randycpu]

View attachment 149850

I meant of the electronic guts, but that sure is cool!!

 

[Yetidriver]

I meant of the electronic guts, but that sure is cool!!

I take a photo tomorow. Now its late here

 

[Yetidriver]

I take a photo tomorow. Now its late here

 

[Yetidriver]

The small one have 540Wh and the new bigger one 880Wh

 

[randycpu]

So 10S/7P? Nice!! And you still have access to the original ~500Wh pack?
What BMS did you use?
I am interested in the ideal diodes you used.
Do the 2 packs act as one or does one of them draw down first?

 

[Yetidriver]

So 10S/7P? Nice!! And you still have access to the original ~500Wh pack?
What BMS did you use?
I am interested in the ideal diodes you used.
Do the 2 packs act as one or does one of them draw down first?

Yes, it is 10S/7P. I printed the case with the 3D printer and then reinforced it with carbon laminate inside and out. So that the housing fits optimally into the frame, I have previously made a negative impression of the down tube and the arch above the motor housing. This with a few layers of carbon fabric. The housing is fixed by 2 V4A screws from the original battery housing.
I got the BMS from Aliexpress 12V 24V 36V 48V E-Scooter Fahrrad platine Daly Bluetooth BMS 3s 7s 8s 10s 12s 13s 14s 15s 16s 40a 60a 18650 21700 32700 Batterie bms - AliExpress 44

The batteries from Alibaba Geb Factory Inr Icr 18650 3.7v 2000mah 2200mah 2500mah 2600mah 3000mah 3500mah 5c 3c Li-ion Rechargeable Battery Lithium 18650 - Buy 18650 Battery Cells Li Ion Battery 3.7v 3200mah 3500mah 2000mah 2200mah Cell Lithium 18650 2600mah Li Ion Rechargeable Batteries high Temperature Ht Rechargeable Battery Lithium 18650 3.7v 2900mah 2500mah Lithium Cell 18650 2600mah Battery For Electric Bike high Temperature 85 Degree 8650 Battery 3c Rechargeable Cylindrical 3.7v 10c 8c 5c 2500mah 3000mah 2600mah For Electric Bike Product on Alibaba.com

and the Ideal Diodes from sales @ re-voltage.eu > Ideal Diodes
Do the 2 packs act as one
And i can charge the big Battery with 7-8A