Trail Watts starts testing Range Extender for Bosch.

[TrailwattsUK]

What about disasembling bosch battery and do the conection for extender before orginal BMS ?

I’ll just answer simply not acceptable or possible due to many factors with safety being the number one reason.

 

[joxelitor]

Thats the one o bought only to be told after I had made payment they wanted my battery

Stay away from Volabike!!!

That company is selling sh*t like that on the pictures attached by Trailwatts.

They talk about "safety layers", "propietary electronics" but the fact is that they are selling the kits with silicon or schottky diodes enclosed on heat shrink tube ignoring all the thermal issues involved.

In Spain where they are based, there are reports about extenders no extending, or ebike damage, depending on the fail mode of the the toasted diode: short or open.

Now they are drilling and modifying Bosch batteries attaching a cable for the connection of the extender in parallel with the cell bank. They left to the user goodwill the connection in equal voltage level!. An electronic nightmare just to left customers with Bosch warranty void

 

[TrailwattsUK]

Stay away from Volabike!!!

That company is selling sh*t like that on the pictures attached by Trailwatts.

They talk about "safety layers", "propietary electronics" but the fact is that they are selling the kits with silicon or schottky diodes enclosed on heat shrink tube ignoring all the thermal issues involved.

In Spain where they are based, there are reports about extenders no extending, or ebike damage, depending on the fail mode of the the toasted diode: short or open.

Now they are drilling and modifying Bosch batteries attaching a cable for the connection of the extender in parallel with the cell bank. They left to the user goodwill the connection in equal voltage level!. An electronic nightmare just to left customers with Bosch warranty void

I’m glad that I don’t have to publicly mention any companies or outfits claiming to have a safe system.

I’ll use the phrase “With great power, comes greater responsibility”

 

[TrailwattsUK]

Todays ride proved the prototype module compatibility with Gen 4 motor and battery. 19 miles with a 378wh booster on a size large Focus jam with tubes plus rider/ bag 105kg riding in high winds on a local loop resulted in 1 bar drop of the 5 displayed.

Upgrading the display etc so I can gather more data.

 

[The EMF]

Sign me up

 

[The EMF]

I’d love a range extender for Whyte E150RS……

 

[TrailwattsUK]

It’s getting trail tested daily from next week. Hopefully I can try get a full day on the bike to see what mileage I can achieve. Padded cycling shorts will be a must

 

[Slapbassmunky]

I know the last post is from over a year ago, but did you get anywhere with this booster setup on the bosh gen 4 system?

 

[TrailwattsUK]

I have been trail testing for a couple of months with the Gen 4 and 378wh.
Module working really well.
Hopefully roll out a fitting service later this year.

 

[Slapbassmunky]

I have been trail testing for a couple of months with the Gen 4 and 378wh.
Module working really well.
Hopefully roll out a fitting service later this year.

Amazing work, really excited for this as it'll open up some truly epic rides on my Rail.

 

[Dirtnvert]

I could see this being very popular with the bikes with the sx motor. Ive heard the bosch extender packs have been hard to get ahold of. Maybe bosch has addressed and have more stock now, idk.
I think most people with internal 400w battery on a bosch sx equipped bike will want an extender of some sort

 

[Slapbassmunky]

I could see this being very popular with the bikes with the sx motor. Ive heard the bosch extender packs have been hard to get ahold of. Maybe bosch has addressed and have more stock now, idk.
I think most people with internal 400w battery on a bosch sx equipped bike will want an extender of some sort

At least people with the smart system have an option. I have a gen 4 non-smart equipped bike and there is nothing available. Hopefully the package trailwatts comes up with will fit in the frame triangle of a trek rail.

 

[Dirtnvert]

At least people with the smart system have an option. I have a gen 4 non-smart equipped bike and there is nothing available. Hopefully the package trailwatts comes up with will fit in the frame triangle of a trek rail.

I wouldnt be surprised if it happens. Looks like this current one fits in a water bottle cage.
I think an extender for a fazua motor would probably be a top seller. Those bikes only come w a 400 or r80w battery and fazua has pushed back the extender release to fall of 2025