Battery draining faster

Polar

Well-known member
Jun 16, 2023
721
837
Aurora borealis
I have noticed on my 1 year old Comp carbon done 6500km the motor use more battery than when it was new and I am pretty sure it do because I use the same assistant levels, tire, tire pressure and cadence on the same routes as I have always done and I didn't notice this on another Levo I had earlier with the same setup and routes.
The battery drain is around 15% more.
What could be the reason when I have done the same routs in 2 years with exactly the same setup and no I haven't gained weight.
 

j14ben

New Member
Mar 11, 2025
19
60
Egremont, Cumbria, UK
How many charge cycles has the battery done? A lithium battery it will hold 80% of its full charge after 1000 charge cycles, if your near that limit or over it then that would account for your bike feeling like it's using more battery because it's not getting 100% charge.
 

Polar

Well-known member
Jun 16, 2023
721
837
Aurora borealis
How many charge cycles has the battery done? A lithium battery it will hold 80% of its full charge after 1000 charge cycles, if your near that limit or over it then that would account for your bike feeling like it's using more battery because it's not getting 100% charge.
98 charges and the drain is similar when the battery is fully charged or less.
 

Plummet

Flash Git
Mar 16, 2023
1,221
1,725
New Zealand
6500km... thats a high milage and only 98 charge cycles? That's 66km per charge which is excellent. Are you riding mainly flat easy terrain? I never get 66km in one charge.

But yes, batteries degrade from the time they are made. They will keep reducing in capacity until you deem the capacity too low and you purchase another battery.
 

steve_sordy

Wedding Crasher
Nov 5, 2018
9,427
10,040
Lincolnshire, UK
Has this happened gradually and you have just noticed, or has it happened over a short period of time and you have just noticed, or was it a step change that you noticed immediately? Different causes.

Something binding somewhere? Bearings anywhere on the bike might need replacing, lubrication required, brakes binding....
have you changed your tyres and maybe bought a softer compound by mistake (or they sent one).
Have you got less fit over the time and are using higher power modes? Even if you are not consciously doing so, you could be hanging on to higher levels a little bit more than you used to.
 

JP-NZ

E*POWAH Elite World Champion
Feb 17, 2022
1,380
1,081
Christchurch - New Zealand
6500km... thats a high milage and only 98 charge cycles? That's 66km per charge which is excellent. Are you riding mainly flat easy terrain? I never get 66km in one charge.

But yes, batteries degrade from the time they are made. They will keep reducing in capacity until you deem the capacity too low and you purchase another battery.
Maybe he's like me and only rides in Eco/Tour to actually get a workout. Mine is even lower my Bosch 750wh has 40 charge cycles for 3452km
 

Polar

Well-known member
Jun 16, 2023
721
837
Aurora borealis
6500km... thats a high milage and only 98 charge cycles? That's 66km per charge which is excellent. Are you riding mainly flat easy terrain? I never get 66km in one charge.

But yes, batteries degrade from the time they are made. They will keep reducing in capacity until you deem the capacity too low and you purchase another battery.
Flat and easy in turbo
 

Polar

Well-known member
Jun 16, 2023
721
837
Aurora borealis
Has this happened gradually and you have just noticed, or has it happened over a short period of time and you have just noticed, or was it a step change that you noticed immediately? Different causes.

Something binding somewhere? Bearings anywhere on the bike might need replacing, lubrication required, brakes binding....
have you changed your tyres and maybe bought a softer compound by mistake (or they sent one).
Have you got less fit over the time and are using higher power modes? Even if you are not consciously doing so, you could be hanging on to higher levels a little bit more than you used to.
I have been doing this stretch the last 3 years in all types of weather and different types of tires and alway lokk at the battery drain at the same place/distance which is 10km and on a earlier bike and this I use 12-15% but now it's 15-20% regardless of whether the battery is 100 or 60% from the start.
I started to notice it during the winter and though the temperature was the reason but now winter is gone.
In my type of riding which is mostly flat in turbo 8-10 gear and 80-90 cadence I don't notice any major changes in battery drain weather it's in turbo or trail but now I have noticed it started around 2 month ago. I have done this measure on different bikes at different weather conditions and tires in a couple of years almost daily so I know the bike is using more battery since it's an average not maximum distance.
Brakes, lube and bearings are good and bike is rolling freely.
 

Plummet

Flash Git
Mar 16, 2023
1,221
1,725
New Zealand
I have been doing this stretch the last 3 years in all types of weather and different types of tires and alway lokk at the battery drain at the same place/distance which is 10km and on a earlier bike and this I use 12-15% but now it's 15-20% regardless of whether the battery is 100 or 60% from the start.
I started to notice it during the winter and though the temperature was the reason but now winter is gone.
In my type of riding which is mostly flat in turbo 8-10 gear and 80-90 cadence I don't notice any major changes in battery drain weather it's in turbo or trail but now I have noticed it started around 2 month ago. I have done this measure on different bikes at different weather conditions and tires in a couple of years almost daily so I know the bike is using more battery since it's an average not maximum distance.
Brakes, lube and bearings are good and bike is rolling freely.
You have an unusual use case. My call is battery degredation.
 

Plummet

Flash Git
Mar 16, 2023
1,221
1,725
New Zealand
Maybe he's like me and only rides in Eco/Tour to actually get a workout. Mine is even lower my Bosch 750wh has 40 charge cycles for 3452km
I don't see a correlation between power modes and exercise levels. For me its more/less speed. I still apply the same amount of human jandle. Some of my max effort stints are in turbo/emtb pushing hard.

Eco for me is an emergency setting to get home when im light on battery. I will take my mtb if im riding at mtb speeds. The E is for more speed, not less effort.
 

JP-NZ

E*POWAH Elite World Champion
Feb 17, 2022
1,380
1,081
Christchurch - New Zealand
I don't see a correlation between power modes and exercise levels. For me its more/less speed. I still apply the same amount of human jandle. Some of my max effort stints are in turbo/emtb pushing hard.
For me if I'm riding between 30-32kph in tour+ why even try EMTB/turbo?

I do push a lot of watts though so of course its based on a case by case basis.
 
Last edited:

Plummet

Flash Git
Mar 16, 2023
1,221
1,725
New Zealand
For me if I'm riding at 32kph in tour+ why even try turbo?

I do push a lot of watts though so of course its based on a case by case basis.
Same. But mostly the 32kph +sections are road/gravel connecting sections to the next bit of actual track.
 

j14ben

New Member
Mar 11, 2025
19
60
Egremont, Cumbria, UK
• Are both wheels spinning freely? If there's any drag from bearings or disc brakes that would have an affect.

• Have you checked the connections on the cables to see if they are tight and no water damage at the joints?

• Are you using a normal or a fast charger, although FCs are great they do affect the battery over time.

• Have you totally drained the battery then gave it a full charge?

If all those are OK then it's prob a session with your Specialized Dealer to have the bike on their computer.
 

Polar

Well-known member
Jun 16, 2023
721
837
Aurora borealis
Maybe it's normal I just haven't noticed this on any of the other Levo I have had.
It's no problem I was just curious why this happened on this before bike.
When I have time I will ask my LBS to take a look at it.
 

steve_sordy

Wedding Crasher
Nov 5, 2018
9,427
10,040
Lincolnshire, UK
I have been doing this stretch the last 3 years in all types of weather and different types of tires and alway lokk at the battery drain at the same place/distance which is 10km and on a earlier bike and this I use 12-15% but now it's 15-20% regardless of whether the battery is 100 or 60% from the start.
I started to notice it during the winter and though the temperature was the reason but now winter is gone.
In my type of riding which is mostly flat in turbo 8-10 gear and 80-90 cadence I don't notice any major changes in battery drain weather it's in turbo or trail but now I have noticed it started around 2 month ago. I have done this measure on different bikes at different weather conditions and tires in a couple of years almost daily so I know the bike is using more battery since it's an average not maximum distance.
Brakes, lube and bearings are good and bike is rolling freely.
I'm out of ideas, except for battery degradation.
 

Binhill1

🍊 Tango Man 🍊
Mar 7, 2019
3,880
6,151
Scotland
Definitely losing a bit by sounds of it , mine has had 300 charges 10000 miles. Only thing I notice if I fully charge and don't go out as planned for another day max I check it and it takes 15 minutes to top up. Milage range seems the same though as I have been testing it on eco these past few weeks . If you live way up North that could be a factor I don't get same range in the cold weather.
 

EMTB Forums

Since 2018

The World's largest electric mountain bike community.

578K
Messages
29,437
Members
Join Our Community

Top