Levo Gen 4 Levo GEN4 S Works and a range extender

kayesport

kayesport

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Hi, I've just bought a gen 4 S Work and also a range extender. When they are both fully charged and they are plugged in. It says on the dashboard that it is a reduced power!! if I ride just with The standard 850 battery no problem. It only goes to reduce power when they are both plugged in. Has anybody else had this problem? Specialised that don't seem to know what to do at the moment I'm taking the bike back again on Thursday.
 
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I’m sure I read in reviews this is exactly what it will do due to the different battery technologies used, the extender reduces the power delivered by both until it’s unplugged or depleted. Sorry don’t have a link to the article but have certainly read/heard that.
 
It seems unexpected and counterintuitive to have less power available when additional capacity is added. Very interesting aspect.
 
Please note: If the range extender has a higher state of charge than the main battery and both are connected, only reduced power will be available as long as the range extender’s percentage is higher than that of the main battery.

This means that as soon as both batteries reach the same charge level, for example both at 65%, full power becomes available again from that moment on, and both batteries – the main battery and the range extender – will then be discharged simultaneously in parallel.

During this entire process, you always have full power once both batteries are at the same charge level. This is the normal operating behavior of the range extender in combination with the main battery.

It is recommended to connect the range extender fully charged (100%) when the main battery is also fully charged (100%), because in this case both batteries will discharge at the same time and you will have full system power available throughout the entire ride.

As mentioned at the beginning, if your main battery is, for example, at a charge level of 50% while the range extender is at a higher level, say 85%, and you connect the range extender to the system and see the two different charge levels on the display with the range extender showing the higher percentage, you will have reduced power until both batteries reach the same charge level.
 
PaulH2B said:
Please note: If the range extender has a higher state of charge than the main battery and both are connected, only reduced power will be available as long as the range extender’s percentage is higher than that of the main battery.

This means that as soon as both batteries reach the same charge level, for example both at 65%, full power becomes available again from that moment on, and both batteries – the main battery and the range extender – will then be discharged simultaneously in parallel.

During this entire process, you always have full power once both batteries are at the same charge level. This is the normal operating behavior of the range extender in combination with the main battery.

It is recommended to connect the range extender fully charged (100%) when the main battery is also fully charged (100%), because in this case both batteries will discharge at the same time and you will have full system power available throughout the entire ride.

As mentioned at the beginning, if your main battery is, for example, at a charge level of 50% while the range extender is at a higher level, say 85%, and you connect the range extender to the system and see the two different charge levels on the display with the range extender showing the higher percentage, you will have reduced power until both batteries reach the same charge level.
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Yes, thank you for that. I saw that information as well, but both batteries were fully charged 100% when plugging in the first time I've also taken it to a dealer for them to look at it and they say it's very strange and they're waiting for specialised Europe to come back to work and then they will look at it again

What I'm actually going to do is go out with it both of them connected and see what happens because it's really annoying spending this type of money and not being able to use it.

Hopefully, they'll sort something out at the end of the week
 
Yeah, I would recommend that you just give it a try, ride it and see how both batteries will be discharged. Perhaps it is just the intial Battery-Cell synchronization that needs to happen during the ride by the BMS. Could be that the "reduced power" message will disappear aufter a short distance.
And keep us updated.
 
PaulH2B said:
Yeah, I would recommend that you just give it a try, ride it and see how both batteries will be discharged. Perhaps it is just the intial Battery-Cell synchronization that needs to happen during the ride by the BMS. Could be that the "reduced power" message will disappear aufter a short distance.
And keep us updated.
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Will do I'm going to give it a go tomorrow
 
Had a few rides with main battery plus Range Extender and didn't experience such an issue. Full power all the way from 100+100 to 0+0 percent.
 
Chris_R said:
Had a few rides with main battery plus Range Extender and didn't experience such an issue. Full power all the way from 100+100 to 0+0 percent.
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Okay, good to know. Try it yesterday still restricted power seems to be just using the range extender first so I'll take it into the dealership.
 
Give you an update

So they've changed the battery they've changed the screen. They've changed the range extender still the same so now they're going to change the wiring because they've never had this before allegedly so let's see what happens on Monday. They think there's too much resistance in the wiring which is confusing the on board computer, but let's see. Hopefully I'll have full power soon with range extender and main battery.
 
I'm fishing here but there were mentions with problematic hot shoes of the axs derailleur. Might be worthwhile to check that out if nothing else helps (it might drain too much current someone reported)
 
Chris_R said:
I'm fishing here but there were mentions with problematic hot shoes of the axs derailleur. Might be worthwhile to check that out if nothing else helps (it might drain too much current someone reported)
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I’ve had to remove my hot shoe and just run an independent AXS battery. Neither Specialized or SRAM will take responsibility for it…very annoying 😡
 
I had the same problem with my Levo 4 Sworks .. initially it worked perfectly with both batteries depleting at the same time . For no reason it started advising reduced power and and the batteries did not work in unison . I had to use each battery separately.
I took it back to the shop and after a couple of days they advised that there was a known software problem that caused this issue and that Specialized were working on a fix .… see attached
The work around is to reset the software …

https://support.specialized.com/kb/sp_en-us/content/202300000006199/Display-Resetting

Further ..

Known Issues
https://support.specialized.com/kb/...0021036=1000033844&Q1-1-1000034398=1000036127

Intended behaviour ....
https://support.specialized.com/kb/...000006193/Turbo-Bikes-Normal-System-Behaviour


I have requested an update from my LBS with regards to when the software update is expected .. will keep you posted .


Hope this helps

IMG_2070.jpeg
 
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Chris_R said:
I'm fishing here but there were mentions with problematic hot shoes of the axs derailleur. Might be worthwhile to check that out if nothing else helps (it might drain too much current someone reported)
Click to expand...
Hi okay so situation is they changed yet another head unit as in display and all of a sudden everything was good done lots of riding since then both batteries working well and depleting the same percentage. so if anyone has a problem with the battery not working parallel it's the Head unit it seems the display unit. Hope this helps if anyone has any problems.

Regarding the settings and battery consumption basically take all the support down to minimum and off we use Eco 10 to 15% then trial 30 to 50% and turbo 70 to 100% battery life's incredible and it has all the power you will ever need and the trash and control is phenomenal..
if you leave the standard settings in there, they eat battery like a fat man in a buffet.
 
I had to disconnect my Range Extender yesterday as the gears stopped working (too much voltage).

Once the main battery had dropped to about 60% I plugged the RE back in and it worked due to the lower voltage. The bike ran on low power/extender only until the main battery automatically kicked in once the RE % had dropped to a comparable level.

Not happy!
 
Eduardoramundo said:
Did you cut the hot shoe off?
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I've never had that happen since I got the Head unit. It's been pretty much perfect a couple of times. It's been a little bit confused but best case scenario is remove the battery. Wait a minute put the battery back in and then it resets everything normal. Now I have de restricted the bike as well and holy shit it's a different world now especially on those trips home.
 
Baron said:
My LBS hid it in the frame I think. Still waiting for a resolution but neither SRAM or Spesh rider care will take responsibility. My money is on the derailleur.
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Regarding the derailer not working
I've had this a few times after I've knocked it doing downhill it goes into a funny mode
You can manually pop it back into the operational mode or disconnect the battery and then connect it again

It's happened to 3 times but I'm sure i knocked it out of position. It clicks out of it desired range have a mess around with the derailer You have to be quite brutal with it but this type of derailer if you hit it automatically goes back to the last point if it's the top range one
 
kayesport said:
Regarding the derailer not working
I've had this a few times after I've knocked it doing downhill it goes into a funny mode
You can manually pop it back into the operational mode or disconnect the battery and then connect it again

It's happened to 3 times but I'm sure i knocked it out of position. It clicks out of it desired range have a mess around with the derailer You have to be quite brutal with it but this type of derailer if you hit it automatically goes back to the last point if it's the top range one
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Thanks kayesport but it’s purely an electrical problem.
 
Baron said:
Thanks kayesport but it’s purely an electrical problem.
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Honestly, I've had the same. No response from the sender no light on the derailer just dead next time it happens. I'll take a video. My rattle around with it pulled it backwards and forwards it then reset something and started working anyway tell us what you find.
 
Having the same issue the mech stops working at least 4x per ride with a range extender fitted and now the motor has let go, specialized need to sort there electrics out and fast, also the walk mode since the update is none existent and makes a really bad noise
 
kayesport said:
Honestly, I've had the same. No response from the sender no light on the derailer just dead next time it happens. I'll take a video. My rattle around with it pulled it backwards and forwards it then reset something and started working anyway tell us what you find.
Click to expand...
It’s a known electrical issue.

IMG_3332.webp
 
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