Help! Replacement LY48v1000w controller choice

[saneagle]

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'

When you ask some controllers to give power to the motor, they send a sequence of pulses and look for feedback. If they don't get the right feedback, they try a different sequence. Different controllers do it in different ways. That test is pretty well meaningless.

If your battery is just worn out, I'd expect it to drive the motor with the wheel off the ground, and when you ride the bike, it would cut when you demand a certain amount of power. The same would happen with an under-rated battery.

Your description of your symptoms is unclear. The first bit makes sense: Your first battery lasted a year, which sounds about right for a crappy over-stressed battery. Then, you said you bought that 99999million AH one that immediately didn't work, so you got the tester. That makes sense too, since you bought a battery that can only deliver 5A continuous for your probable 25A controller. After that, you said that the 5A battery had worked for a year. That doesn't add up with the previous statements, and doesn't sound possible considering its rating.

AFAICS, all the Greenlance batteries would be suitable. The more Ah you get, the further you can go and the more power you can use while doing it. As i said before, the minimum requirement is that the battery should be able to deliver 25A continuous. 30A would be better, as the battery will be less stressed, so will last longer. You check the specification to see what is the maximum continuous current that the battery can deliver. It must be the maximum CONTINUOUS current, not the maximum current.

 

[Electrik Skok]

When you ask some controllers to give power to the motor, they send a sequence of pulses and look for feedback. If they don't get the right feedback, they try a different sequence. Different controllers do it in different ways. That test is pretty well meaningless.

If your battery is just worn out, I'd expect it to drive the motor with the wheel off the ground, and when you ride the bike, it would cut when you demand a certain amount of power. The same would happen with an under-rated battery.

Your description of your symptoms is unclear. The first bit makes sense: Your first battery lasted a year, which sounds about right for a crappy over-stressed battery. Then, you said you bought that 99999million AH one that immediately didn't work, so you got the tester. That makes sense too, since you bought a battery that can only deliver 5A continuous for your probable 25A controller. After that, you said that the 5A battery had worked for a year. That doesn't add up with the previous statements, and doesn't sound possible considering its rating.

AFAICS, all the Greenlance batteries would be suitable. The more Ah you get, the further you can go and the more power you can use while doing it. As i said before, the minimum requirement is that the battery should be able to deliver 25A continuous. 30A would be better, as the battery will be less stressed, so will last longer. You check the specification to see what is the maximum continuous current that the battery can deliver. It must be the maximum CONTINUOUS current, not the maximum current.

This OLPAY is my old battery , it lasted just over 1 year and still provides a range of approx 7 miles of moderate riding before it 'gives up'



The Samsung branded battery is the new battery , this provides approx 5 miles of moderate riding before it 'gives up'




From what you have said it would appear the battery is the issue rather than the controller ?
That being the case which battery specifically from the website you previously quoted would you recommend ? intended range approx. 20 miles of moderate riding

 

[saneagle]

From what you have said it would appear the battery is the issue rather than the controller ?
That being the case which battery specifically from the website you previously quoted would you recommend ? intended range approx. 20 miles of moderate riding

The more AH you get, the better, but that costs more. I reckon that your first battery was 10Ah, so whatever miles you got from it when new, call it M. Divide 20 miles by M and multiply by 10Ah, so if you got 15 miles from it 20/15x10 = 13.3333, say 14Ah, but that's the minimum, and it'll reduce as the battery wears, so 17Ah would be more appropriate. With the 20Ah one, you'd be able to go much faster without worrying.

 

[Electrik Skok]

The more AH you get, the better, but that costs more. I reckon that your first battery was 10Ah, so whatever miles you got from it when new, call it M. Divide 20 miles by M and multiply by 10Ah, so if you got 15 miles from it 20/15x10 = 13.3333, say 14Ah, but that's the minimum, and it'll reduce as the battery wears, so 17Ah would be more appropriate. With the 20Ah one, you'd be able to go much faster without worrying.

sounds like this one is the one to get then ? are these batteries reliable in your experience and contain genuine samsung cells ? https://greenlance.co.uk/collections/samsung-electric-bike-batteries-greenalance/products/electric-bike-battery-48v-20ah-samsung-cells-21700-premium-quality?variant=43974839927013

 

[saneagle]

sounds like this one is the one to get then ? are these batteries reliable in your experience and contain genuine samsung cells ? https://greenlance.co.uk/collections/samsung-electric-bike-batteries-greenalance/products/electric-bike-battery-48v-20ah-samsung-cells-21700-premium-quality?variant=43974839927013

I have two from them, which so far do what they're supposed to. It's a proper UK supplier. The guys there were very helpful when I made a mistake in my first order. The delivey is next day unless you order at a weekend. I can't find any negative commenys using a Google search. there's one one-star rating on Amazon, but no comment to go with it, though you have to understand that a lot of guys that buy this stuff don't know about it, so make mistakes in ordering and use. Other Amazon reviews are all good. That's all I know.

Don't forget that you can get an additional 10% discount if you use their AUTUMN10 or SUMMER10 discount code, then send me half of it for telling you that. I'll settle for a tenner.

 

[thelarkbox]

Just an excuse to post a pic..

A similar motor and noname controller combo running headless with the 17ah 48v battery recently bought from greenlance.. Only just finished the bolt up today so I cant report on total milage but ive been up and down my rd at least 5x testing brakes etc.. so thats over 5 mile and the on battery power meter has not changed a jot.. ..