In #20 I didn't phrase it to well.

What I meant was try the old battery's (not to see that they work in them selves) but whether the bike worked without cutting, thus ruling out a controller fault.

In PAS 1 you managed a few miles to work which is good, higher draw load did see it cut out but that is normal with knackered batteries.

Edited February 4, 20206 yr by Nealh

In #20 I dindn't phrase it to well.

What I meant was try the old battery's (not to see that they work in them selves) but whether the bike worked without cutting, thus ruling out a controller fault.

In PAS 1 you managed a few miles to work which is good, higher draw load did see it cut out but that is normal with knackered batteries.

 

I have two nearly identical setups using Cyclotricity/KT Systems and both have cut out with the '5 mile battery' but when I put it on a lower PAS I can make the 9 miles needed but I must remember not to use throttle.

 

I'm that desperate I'm looking on eBay now for somebody who can send me a bottle or downtube battery for around £160 as quick as possible until I'm sorted with the new batteries which I estimate will be a two week turnaround.

I don't have a car and I'm on the waiting list for two knee replacements (should never have competed in marathons) so I need my bikes to get to work and back.

I have two nearly identical setups using Cyclotricity/KT Systems and both have cut out with the '5 mile battery' but when I put it on a lower PAS I can make the 9 miles needed but I must remember not to use throttle.

 

I have two 14.5ah batteries using a throttle or high PAS is a no no now as they sag terribly and will cut out, using only PAS 1 or 2 I can get eke out 30 -40 miles. Use PAS 3 and lucky to go 16 miles. Like your old 9 mile battery a sign of ageing cells or cells suffering from high IR causing heavy voltage sag/collapse.

 

Mine are fit for purpose which is local commute and errand running, for my other bikes I use mainly my own packs which I build or 10s lipo's.

Edited February 4, 20206 yr by Nealh

So good news, I think she looked at the photo's I took of the battery labels and realised they were perhaps returns -

 

Hello

Thank you for your message as well as for the pictures attached. I am very sorry you have experienced such issues.

What I can offer you is a return label for both of the items and postage of replacements or a return label and a refund.

Please let me know which you prefer.

Kind regards

AP

 

Hi

 

I would like two batteries that work please

 

Dave

 

 

Hello

Thank you for your message. I can generate a return label for you. Once I generate one it will be valid only for 24 hours. Please let me know when you will be able to post these batteries and I will send you a return label for then.

Kind regards

AP

 

 

So when I get the 'new' batteries I will first test the voltage output of the chargers.

I'll charge to the green LED

I'll then test the voltage of the batteries.

 

Thanks everybody.

I'm pleased to hear that you (hopefully) got things sorted.

Labels arrived today and I'm only sending them to West Drayton and not Poland as I thought.

I've received one replacement battery today and the first thing I did was check the charger - 41.9v.

Charged the battery to a Green LED which took 4 hours, checked the voltage which was showing 42v and just put it on the bike.

I'm going to leave it on throttle for 30 minutes and see if it's still going until 22:40.

Wish me luck.

I've received one replacement battery today and the first thing I did was check the charger - 41.9v.

Charged the battery to a Green LED which took 4 hours, checked the voltage which was showing 42v and just put it on the bike.

I'm going to leave it on throttle for 30 minutes and see if it's still going until 22:40.

Wish me luck.

Best of luck!!

 

Andy

It's just done 9 miles which is my commute distance so that's way more than the other two.

Of course it's only freewheeling and hasn't got my fat arse on it so I'll give it a proper test tomorrow.

What capacity is the new battery and do you know the cells used ?

What capacity is the new battery and do you know the cells used ?

 

36v 11.6ah, Panasonic

11.6 PF cells then I suspect 10s4p.

For cycle life/longevity try and charge to 4.1v only and a full charge every month or two, three probably at most to ensure balance is good.

Good cells should keep their balance, it is the sitting at 4.2v that does in for them in the long term. When charging only carry out the final charge a few hours before use is required.

If you are using a Sans charger or a similar one then they have an adjustable V regulator inside.

The actual capacity held between 4.1v & 4.2v is very little and only account for < 5% of overall capacity, manufacturers and sellers like you to charge to 4.2v so that have to buy again sooner then later.

Edited February 15, 20206 yr by Nealh

I'll do some voltage experimenting, thanks.

11.6 PF cells then I suspect 10s4p.

For cycle life/longevity try and charge to 4.1v only and a full charge every month or two, three probably at most to ensure balance is good.

Good cells should keep their balance, it is the sitting at 4.2v that does in for them in the long term. When charging only carry out the final charge a few hours before use is required.

If you are using a Sans charger or a similar one then they have an adjustable V regulator inside.

The actual capacity held between 4.1v & 4.2v is very little and only account for < 5% of overall capacity, manufacturers and sellers like you to charge to 4.2v so that have to buy again sooner then later.

 

I've acquired 5 chargers so I've just opened one up and took it down to 41v so I'll use that all the time.

However, my intention is to swap the two batteries once a week no matter what bike I'm using, so on average they may do 50 miles one week and nothing the next.

Would you advise that I fully charge every 4 months now or still keep it to the 2 months?

Trial and error but as you are alternating batteries stick to a routine that suit you.

Do a full balance charge every quarter on the pair and if all works out with no issue extend the balance charge by a month.

On ES some do a full balance charge once or twice a year with no issues.

If a battery does become unbalanced you will notice a lot less range or lvc cutting in.

 

With my near 6 y/o 29E batteries they have so far behaved when charged to 4.1v

Big question

 

My second replacement battery has just turned up and the idiots have given me a 48v 17ah battery instead.

Will this work OK on my 36v bike and do I keep quiet about it?

 

My main gripe is that I wanted two identical batteries to swap between bikes so I'm in a quandry now.

 

Also what is this fitting called please?

Edited February 17, 20206 yr by aardvark5

Connector is called EC5/Euro connector.

 

Unless your controller is dual voltage or has 63v main inlet capacitor then it will blow.

Your motor will run 33% faster and may heat up more esp on inclines , the rpm will increase by 33% as well. Generally a 36 v hub run at 48v will be less efficient then a dedicated 48v hub,

Connector is called EC5/Euro connector.

 

Unless your controller is dual voltage or has 63v main inlet capacitor then it will blow.

Your motor will run 33% faster and may heat up more esp on inclines , the rpm will increase by 33% as well. Generally a 36 v hub run at 48v will be less efficient then a dedicated 48v hub,

 

I'm not a dishonest person but when opportunity comes my way I thought I could take advantage.

I want two setups exactly the same so I can interchange if needed and I will never have intentions of going over 15.5mph on the throttle.

I'll email them again for a return.

 

Thanks Nealh

For compatibility you need the same battery case and controller to handle the different voltages like a KT dual voltage model, this will have programming for lvc for both batteries.

This why when dealing with China vendors problems arise and the toing and froing is a damn nuisance and time consuming when things don't go to plan.

I've sent the email now, the battery was also twice as heavy

I'll be happy with the 2x 36v 11.6's

New one on the way and they've refunded me £50 for my patience & honesty - result.

New one on the way and they've refunded me £50 for my patience & honesty - result.

Once you get your 2nd battery back and are happy, I think they deserve to be named for their CS, it's always good to know of companies that DO sort things out when problems occur, even if it has caused you some inconvenience.

I'm now happy with my 2x 36v 11.6ah batteries so I'm now going to name the company who gave the excellent service with no arguments.

 

Both original batteries they sent were faulty and on receipt of pictures of the serial numbers, there were no arguments.

They sent return postage labels, I sent Proof Of Postage and the new batteries were on the way (yes they did send a 48v 17ah by mistake but that was sorted).

 

The company is Green Cell and the ladies who gave me no crap were called Kate & Katrina (could be the same person).