Help! Replacement LY48v1000w controller choice

[Electrik Skok]

Hello Folks,

Hope this post find you well.
Currently running for the past year or so an E-bike kit with 1000W rear hub drive motor . Recently have experienced the bike cutting out under load , replaced battery and fault was still remains the same.
Purchased one of the basic £8 Chinese diagnostic boxes which has suggested my controller is not working as it should.
I don't run a display currently , just used in conjunction with a twist throttle which has some LED lights for the battery level.
I'm a bit lost as to which replacement controller to purchase and I was hoping someone could kindly point me to one that would be reliable please ? Have included some photos showing connections and battery etc.

All the best , Skok

 

[thelarkbox]

the label on the controller box will shed more light and define replacement parameters.

However 99ah from 3 sets of 13 cells smells a bit off to me? and afaik samsung make the cells and dont package them further as a rule for consumer access at least??

what exactly doe the tester show?

edit, very dodgy battery label.. i fear you have replaced a dud battery with a dud.


"The EU is responsible for: like sun Gmbh"

WTF?

 

[Nealh]

Typical type of crappy battery we see on illegal motorbike builds, 9.9ah at the most and cells that will sag and be useless.

 

[saneagle]

That battery cannot give the current that your controller needs. It's a 10Ah 13S 3P one, probably capable of about 15A max. You need to get a proper battery capable of giving at least 1000w, which is 25 amps. You can get one from Greenlance for not too much money:

Samsung Electric Bike Batteries | Greenlance

Electric bike battery with Samsung Lithium-ion Cells, Greenlance offers high-quality battery packs for electric bicycles. Outstanding performance and quality is a must for our batteries. Check out our Samsung Electric Bike Battery models.

greenlance.co.uk

 

[thelarkbox]

not exactly a pedelec either if just throttle control, so not within the scope of this site really try https://endless-sphere.com/
for views and info not in conflict with uk regs..

 

[Electrik Skok]

That battery cannot give the current that your controller needs. It's a 10Ah 13S 3P one, probably capable of about 15A max. You need to get a proper battery capable of giving at least 1000w, which is 25 amps. You can get one from Greenlance for not too much money:

Samsung Electric Bike Batteries | Greenlance

Electric bike battery with Samsung Lithium-ion Cells, Greenlance offers high-quality battery packs for electric bicycles. Outstanding performance and quality is a must for our batteries. Check out our Samsung Electric Bike Battery models.

greenlance.co.uk

Hi , thanks for the reply. Bike has been working for last year with same spec battery no problems whatsoever.

Battery brand: avtrak
Battery model: 48V 99999mah
Battery: Use Samsung battery
Rated power: 99999mAh
Rated voltage: 48V
Battery combination: 3 in parallel and 13 in series
Battery size: 235*68*65mm
Number of batteries: 1
Maximum instantaneous discharge current: 30A
Maximum DC discharge current: 15A
Standard load current: 2A
Standard charging current charging time: 4 hours
Maximum continuous load: 5A
Quick charge time: 4 hours
Battery weight: about 2kg
Packing list:
1.48V 99999mAh battery
2.54.6V 2A charger

It is the controller which is in question , as a fault diagnostic tool shows this to be the issue. Can you recommend a controller please ?

 

[saneagle]

Hi , thanks for the reply. Bike has been working for last year with same spec battery no problems whatsoever.

Battery brand: avtrak
Battery model: 48V 99999mah
Battery: Use Samsung battery
Rated power: 99999mAh
Rated voltage: 48V
Battery combination: 3 in parallel and 13 in series
Battery size: 235*68*65mm
Number of batteries: 1
Maximum instantaneous discharge current: 30A
Maximum DC discharge current: 15A
Standard load current: 2A
Standard charging current charging time: 4 hours
Maximum continuous load: 5A
Quick charge time: 4 hours
Battery weight: about 2kg
Packing list:
1.48V 99999mAh battery
2.54.6V 2A charger

It is the controller which is in question , as a fault diagnostic tool shows this to be the issue. Can you recommend a controller please ?

That battery specification says that the battery can give maximum 5A continuous. You need one that can give 25A. What's the current written on your controller? I'm very surprised when you say that battery worked for a year, Normally, I wouldn't believe you. Assuming it did, it's knackered know.

The fault diagnosis tool doesn't show that the controller is faulty. It doesn't work like that. What test did you do that makes you think that?

 

[cyclebuddy]

...as a fault diagnostic tool...

The best fault diagnostic tool you have available to you right now is @saneagle who's been building, diagnosing, and repairing e-bikes since dinosaurs roamed the earth (almost).

There's so much wrong with the stated specification of that battery - apart from the spelling (eg. "capcity") - that I too can smell the bull from here. Standard charge time 4hrs with a 2A charger = 8Ah at best... yet it claims a capacity of 99.9Ah, which as already pointed out is absurd. It'd be interesting to open that and discover what the cells/capacity really is.

 

[thelarkbox]

my understanding of the testers @Electrik Skok is using requires the tester to replace the motor in order to test the controller, so battery issues unless the battery is completely fried are unlikely to be revealed as the tester box can hardly draw a significant load?

If it needs replacing the KT controllers are generally recommended for having an open configurable system and wide selection of compatible headsets, tho can be run as yours with a simple bridge between red and blue wires on the controller interface plug/socket (double check before implementing tho..)

beyond that match the parameters on your controllers label for voltage max amps etc

 

[Nealh]

The 99999mah rating the chinese give is false and mis leading , so will any of the other info be doubtful. If one knew mauch about battery capacities and cells used, one would realise the rating is false/fake.
Typically for a Samsung cell or any other 18650 cell in that format 3500mah is the max rating that can be got get from the format size, so at most your battery can only be 10.5ah/10,500mah.
The 99999mah rating is in fact 9.9ah/9,900 mah, it is also likely that the cells used are 2900 mah cells like the Samsung 29E.
Packs like that are known for using poor quality cells and even fake unbranded ones dressed up to look like branded ones.

 

[Nealh]

The Op shows the replacement battery but not the one that originally was used and it's spec, I doubt that the two are any where near the same.

 

[StuartsProjects]

Bike has been working for last year with same spec battery no problems whatsoever.

Yet.

Can you say where you live, so those nearby can keep an eye on their local news ?

 

[StuartsProjects]

However 99ah from 3 sets of 13 cells smells a bit off to me?

Very very obviously.

I think what these lunny battery makers might do is add up the mAhr of each individual battery and present that as the 'capacity'

So 99,999 mAhr / (13x3) = 2.56Ahr, so maybe. And maybe the dubious lable generator had a limit of 5 digits.

Why anyone would trust batteries labelled like this is beyond my understanding. Straight down the tip\recycling perhaps, but I would worry just putting one in my car to get rid of it.

 

[Electrik Skok]

The Op shows the replacement battery but not the one that originally was used and it's spec, I doubt that the two are any where near the same.

This is the original battery I had , this lasted a full year before packing without any issues. I was riding on average a couple of times per week. I must stress that the bike was only ridden in a moderate fashion , I suffer health difficulties.

 

[Electrik Skok]

That battery cannot give the current that your controller needs. It's a 10Ah 13S 3P one, probably capable of about 15A max. You need to get a proper battery capable of giving at least 1000w, which is 25 amps. You can get one from Greenlance for not too much money:

Samsung Electric Bike Batteries | Greenlance

Electric bike battery with Samsung Lithium-ion Cells, Greenlance offers high-quality battery packs for electric bicycles. Outstanding performance and quality is a must for our batteries. Check out our Samsung Electric Bike Battery models.

greenlance.co.uk

Thank you for your suggestion , I had a look on the site you kindly linked regarding the battery . It appears the largest size available on there is 20 amps ? being less than the 25 amps you stated as required?

 

[saneagle]

Thank you for your suggestion , I had a look on the site you kindly linked regarding the battery . It appears the largest size available on there is 20 amps ? being less than the 25 amps you stated as required?

You're misunderstanding something. Look at the specifications. They can all give a constant 30 amps.

You didn't answer my two questions above, which were intended to help you and get you to a satisfactory solution quickly.

 

[Electrik Skok]

You're misunderstanding something. Look at the specifications. They can all give a constant 30 amps.

You didn't answer my two questions above, which were intended to help you and get you to a satisfactory solution quickly.

Hi,

I used an Ebike tester to test the existing controller per the attached article
https://www.heybike.com/blogs/heybike-blog/how-to-test-ebike-controller
Unfortunately the existing controller has no label attached and simply has printed on it
LY48v1000w

 

[Electrik Skok]

You're misunderstanding something. Look at the specifications. They can all give a constant 30 amps.

You didn't answer my two questions above, which were intended to help you and get you to a satisfactory solution quickly.

OK thank you for the clarification , which of the batteries would you recommend from the site? there is quite a variance in price between them

 

[saneagle]

Hi,

I used an Ebike tester to test the existing controller per the attached article
https://www.heybike.com/blogs/heybike-blog/how-to-test-ebike-controller
Unfortunately the existing controller has no label attached and simply has printed on it
LY48v1000w

I know which tester you used, but what output from it makes you think something is wrong with the controller?

 

[Electrik Skok]

I know which tester you used, but what output from it makes you think something is wrong with the controller?

Hi, the sequence of the lights displayed during testing were not in accordance with the testers enclosed instructions (which were somewhat difficult to understand as written in 'Chinglish'