Bosch power tube adapters to convert 750hw chamber to smaller battery size

E-MAD MALC

Active member
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Nov 16, 2021
392
219
EAST SUSSEX
stacking two 625 to 750 should do the trick.
Or stack KTM 500 to 625 and Canyon 625 to 750
If you add the 70mm adapter to a 500 it fits on a 625 setup
If you fit the same 70mm adapter on a 625 it fits in a 750 setup
Theory then if you can stick two of the 70mm adapters together you should be able to run a 500 in a 750 setup
 

Jona

Member
Jan 24, 2020
101
44
Belgium
I just ordered a Stive:eek:n with smart system. will my spare 625Wh battery, (which is not smart) work?
 

TommyC

Active member
Jul 7, 2022
283
207
Hampshire
Does anyone know if the compacttube 400 or powermore 250 will fit inside the battery compartment of my cube stereo 750?
 

TommyC

Active member
Jul 7, 2022
283
207
Hampshire
There two totally different sizes
The 250 is backpack or bottle cage mountable
Yeah I get they’re physically different to each other and the 750. Just hoping they would fit in the space at least. Seems daft to strap the 250 into a bottle cage if you’ve got all that space in the frame. 400 is still loads lighter than the 750 so would be nice if that was compatible in some way too
 

TommyC

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Jul 7, 2022
283
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Hampshire
So I just read the 250 only works on systems from 2024. When I bought my bike the smart system was new and I was sold it as being future proof and infinitely updatable. So far I can’t retro fit abs or the mini remote and now this.
 

E-MAD MALC

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Nov 16, 2021
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EAST SUSSEX
So I just read the 250 only works on systems from 2024. When I bought my bike the smart system was new and I was sold it as being future proof and infinitely updatable. So far I can’t retro fit abs or the mini remote and now this.
New PowerMore 250Wh external range extender (backwards compatible with Bosch Full Power Smart System Bikes!). Loads on new lightweight bikes about to be released with this motor system 😊😊
Lots of tech! Decent power, low weight!! @boschebikesystems #emtb #ebike #tech
 

TommyC

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Jul 7, 2022
283
207
Hampshire
New PowerMore 250Wh external range extender (backwards compatible with Bosch Full Power Smart System Bikes!). Loads on new lightweight bikes about to be released with this motor system 😊😊
Lots of tech! Decent power, low weight!! @boschebikesystems #emtb #ebike #tech
 

TommyC

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Jul 7, 2022
283
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Hampshire
It makes absolutely no sense for them not to be backward to compatible! But it’s an expensive gamble to take without knowing for sure.

Doesn’t look like the 400 would fit due to terminal positions being flipped around, at least on vertical mount anyway

IMG_0551.png IMG_0553.jpeg
 

E-MAD MALC

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Nov 16, 2021
392
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EAST SUSSEX
It makes absolutely no sense for them not to be backward to compatible! But it’s an expensive gamble to take without knowing for sure.

Doesn’t look like the 400 would fit due to terminal positions being flipped around, at least on vertical mount anyway

View attachment 121466 View attachment 121467
I'll wait until there available and see if my LBS gets there hands on one and experiments with the options
 

scm007

Member
Mar 23, 2022
49
3
Seattle
Wait I thought the whole purpose of the smart system was that you can use any battery? I'm about to buy a Cube Stereo hybrid and wanted the option to put a rear pannier battery on it as well. Will this not work?
 

Spiff

Active member
Feb 27, 2019
448
262
Earth
Since Black Friday I am a newbie Bosch user (Before I had Shimano E8000), I purchased my new Bosch powered bike (Smart System Drive Unit BDU3740 CX) manufactured on May 22th 2023 with the wrong understanding that in the short future I'd be able to add the Bosch Power More Extender, but after a lot of reading on how to add the Bosch Power More Extender or even a second battery (to be used sporadically in day long mountain trips) , and after a lot of reading, this is my understanding, I might be wrong, so feel free to correct me:

Around year 2020 - 2021 and before Bosch Smartsystem was implemented, there was an easy way to have a Dual Battery System, you just had to purchase the cabling and mounting hardware (and the second battery, of course) and the Drive Unit would recognize it and discharge both batteries at 5% decrements. BUT, the drawback for Bosch was that this system was easy to hack by Third Parties to add a non Bosch Low Cost Extender, mainly, the Aliexpress ones.

In 2022, Bosch Smartsystem arrived and Bosch removed the Dual Battery option, and it became more difficult for Third Parties to add a non Bosch Extender. The only way is to drill the battery housing and solder a wire to the internal battery ground before current measuring Shunt. Obviously, safety is more than compromised and battery warranty is no longer valid.

In 2024 Bosch will be doing more changes to the Smartsystem, and then it will be possible to have Dual Batteries and Power More Extender and it will be difficult to hack, but it will be not possible to retrofit this to older Smartsystem.

These are the Bosch statements for 2024 Dual Battery and Power More Extender:

 

TommyC

Active member
Jul 7, 2022
283
207
Hampshire
Since Black Friday I am a newbie Bosch user (Before I had Shimano E8000), I purchased my new Bosch powered bike (Smart System Drive Unit BDU3740 CX) manufactured on May 22th 2023 with the wrong understanding that in the short future I'd be able to add the Bosch Power More Extender, but after a lot of reading on how to add the Bosch Power More Extender or even a second battery (to be used sporadically in day long mountain trips) , and after a lot of reading, this is my understanding, I might be wrong, so feel free to correct me:

Around year 2020 - 2021 and before Bosch Smartsystem was implemented, there was an easy way to have a Dual Battery System, you just had to purchase the cabling and mounting hardware (and the second battery, of course) and the Drive Unit would recognize it and discharge both batteries at 5% decrements. BUT, the drawback for Bosch was that this system was easy to hack by Third Parties to add a non Bosch Low Cost Extender, mainly, the Aliexpress ones.

In 2022, Bosch Smartsystem arrived and Bosch removed the Dual Battery option, and it became more difficult for Third Parties to add a non Bosch Extender. The only way is to drill the battery housing and solder a wire to the internal battery ground before current measuring Shunt. Obviously, safety is more than compromised and battery warranty is no longer valid.

In 2024 Bosch will be doing more changes to the Smartsystem, and then it will be possible to have Dual Batteries and Power More Extender and it will be difficult to hack, but it will be not possible to retrofit this to older Smartsystem.

These are the Bosch statements for 2024 Dual Battery and Power More Extender:

I bought a smart system equipped bike when it was first released with the same understanding that the system would be continuously updated and added to. Yet half of the stuff released is not backwards compatible. I read the power extenders will only work with 2023 systems onwards. I can’t fit abs, I can’t fit the mini remote without then having unnecessary duplicate controls on the controller. It’s not really the future proof system it’s intended to be.
 

marc224

New Member
Feb 2, 2024
2
0
Aberdeen
Did you ever get round to doing this? Thinking on doing the same for my Moterra. She's a heavy beast as is and thinking the 1.3kg saving could be of benefit?
 

Spiff

Active member
Feb 27, 2019
448
262
Earth
Did you ever get round to doing this? Thinking on doing the same for my Moterra. She's a heavy beast as is and thinking the 1.3kg saving could be of benefit?
If you mean installing the Bosch Powermore 250, then the answer is NO.

My 2023 Moterra has the Bosch Smartsystem that is compatible with Bosch Powermore Extender, but it is required that Cannondale changes a configuration flag POWERMORE READY = NO --> YES, but Cannondale refuses to do the change, they say that the bike frame is not prepared, but this alloy frame is the more robust I've ever seen, and the bottlecage inserts are threaded into a nut inside battery compartment, I believe that only U-Boat bolts are tightened stronger that Moterra bottlecage inserts.

Cannondale use to have the better engineers in the bike industry, but when PON HOLDINGS bought Cannondale, they fired the engineers and hired financial people and lawyers, and now it is the best lawyered up company, but without engineers.
 

marc224

New Member
Feb 2, 2024
2
0
Aberdeen
I meant the 500w battery with extended, but that information is useful to know, so thanks!

A real shame seeing one of the greats turn to that. I half wish I'd demo'd a few, as I would've likely went with a smaller battery, as I'm yet to use more than 60% on bigger days, up to 4000ft
 

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