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A way to fix 36v 14ah Lithium battery?

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Hi guys.

 

I bought an ezee kit and fitted it to my bike about 3 years ago and used it on average twice per week for about 6 months. after that i used it sporadically but usually charged it after use and stored it to then use it probably every month or so on average.

 

more recently i have used it rarely, probably every few months but it has still been okay.

 

about a month ago i used it but noted it hardly had any charge in it, i simply presumed i'd forgot to charge it when i had put it away so i charged it when i got home and put it away. today i used it and again it was nearly depleted so i knew something was wrong. when i attached the charger the led that should have been yellow to indicate charging was green straight away as if it was fully charged.

 

i have emailed cyclezee who i bought it from who stated that it was probably cream-crackered and although they could charge me £20 plus postage, this was only to confirm that is was broken, not to fix it.

 

so, my question is first is there any way of fixing it myself with any special charging method or such like, or is there anywhere that can fix it low cost?

 

as i dont use it anymore as a method of transport to work i cant justify paying a lot for a new battery.

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We can get an idea of what's wtong if you measure the voltage. Charge it right up and measure the voltage on the terminals. Ride it 'til it stops and measure the voltage immediately it stops, then after half an hour neasure it again.
  • Author
We can get an idea of what's wtong if you measure the voltage. Charge it right up and measure the voltage on the terminals. Ride it 'til it stops and measure the voltage immediately it stops, then after half an hour neasure it again.

Cheers d8veh, sorry for the late reply but i had to get my hands on a volt metre. Not sure how to use it but there was a specific section for V so i tested with the 20v setting and it showed 0.10 and when changing it to 200v 00.1 showed which i guess is the same thing.

I might be able to run it down tomorrow and then i will test again. Do i test straight after the bike stops or do i try to drain the battery even more by leaving the leds on to drain the last bits?

You haven't measured properly. Did you set your meter to DC or AC? It would probably best if you show us a photo of it as you had set it for measuring.
That looks OK. Now measure your car battery to check that it's working properly. You should get around 13v.
  • Author
I'll check later but just to clarify i put the black probe in the black contact and red in red so i think i did it right. So the only check is as you say to make sure the metre works.
  • Author
You haven't measured properly. Did you set your meter to DC or AC? It would probably best if you show us a photo of it as you had set it for measuring.

I just read a few things on the Internet regarding this sort of problem and they also stated they were only getting 0.1v

Don't jump to conclusions. A measured logical approach will get you directly to the cause of your problem.
  • Author
Don't jump to conclusions. A measured logical approach will get you directly to the cause of your problem.

Cheers mate, I'll report back

Right, so the meter's working correctly. Which Ezee battery do you have? Does it have a switch on it? Perhaps some photos would help.
  • Author
Right, so the meter's working correctly. Which Ezee battery do you have? Does it have a switch on it? Perhaps some photos would help.

It's a 36v 14ah rack battery. I'll take a picture in a couple of hours when I'm home again.

  • Author
Right, so the meter's working correctly. Which Ezee battery do you have? Does it have a switch on it? Perhaps some photos would help.

Here you go

14352518260881715184660.thumb.jpg.d62d255aefa9707d17580f15e2aa2219.jpg

1435251867516507642278.thumb.jpg.d6f948acb69eeee3702d3ded48d60e2f.jpg

1435251907655-223388316.thumb.jpg.ad505c3ab8a007720c8a7d2b918df0ec.jpg

14352519499401371949188.thumb.jpg.2cc20a44df35b3a8835667fab58ecceb.jpg

Hi guys.

 

I bought an ezee kit and fitted it to my bike about 3 years ago and used it on average twice per week for about 6 months. after that i used it sporadically but usually charged it after use and stored it to then use it probably every month or so on average.

 

more recently i have used it rarely, probably every few months but it has still been okay.

 

about a month ago i used it but noted it hardly had any charge in it, i simply presumed i'd forgot to charge it when i had put it away so i charged it when i got home and put it away. today i used it and again it was nearly depleted so i knew something was wrong. when i attached the charger the led that should have been yellow to indicate charging was green straight away as if it was fully charged.

 

i have emailed cyclezee who i bought it from who stated that it was probably cream-crackered and although they could charge me £20 plus postage, this was only to confirm that is was broken, not to fix it.

 

so, my question is first is there any way of fixing it myself with any special charging method or such like, or is there anywhere that can fix it low cost?

 

as i dont use it anymore as a method of transport to work i cant justify paying a lot for a new battery.

 

Hi Marc,

 

Firstly, in our communications I did not use the expression "cream crackered".

 

I explained that the testing would not fix the problem but we would run a dynamic load test and establish the remaining capacity of the battery.

I did suggest that you measure the voltage with a multimeter.

I see from your photos that you are testing on the output side, for this you need to have battery switched on.

  • Author
Hi Marc,

 

Firstly, in our communications I did not use the expression "cream crackered".

 

I explained that the testing would not fix the problem but we would run a dynamic load test and establish the remaining capacity of the battery.

I did suggest that you measure the voltage with a multimeter.

I see from your photos that you are testing on the output side, for this you need to have battery switched on.

 

thanks, the term is just my way of saying that it was broken without saying as much, at least thats what i understood from your email. you're right though you didnt specifically say that.

 

as of testing the battery on the output i tried putting the metre's probes into the charging holes in all possible configurations such as black in 1 and red in 2, black in 2 red in 3 etc and none of them gave any reading at all. if it needs to be tested the way i am doing it, are you saying to turn the key to on while not connected to the bike?

 

i did then try running the battery down by raising the back wheel and keeping the throttle on. as there wasnt any resistance such as my weight it is taking forever but i will keep going until all juice is exhausted.

 

cheers so far guys.

Ah, that'll be your problem then. Yes, it will need to be switched on to test it.

 

Running it down by running 'no load' as you are doing could take a long time. Many hours if the battery is good. (maybe 10 or more)

My Woosh and Oxy batteries both have to be on to get a voltage charge reading.
  • Author

Right, i charged it for about 4 hours, turned it on and checked with the metre. 32.6v was the reading. Tomorrow i should be able to run it down and I'll check again.

Do i need to run it down every last little bit? Or simply until it stops while I'm riding it?

No need. If it's a 36v battery, and its only getting to 32v, then either it or the charger are faulty. Next check the output voltage of the charger.
You're doing something very wrong. If it's 32.6v, you don't want to run it down, you need to charge it until it's 42v, or thereabouts. Switch the damn thing on and don't switch it off until it's working properly. Charge it up with it switched on. Don't stop charging until you get the green light on your charger.
  • Author
You're doing something very wrong. If it's 32.6v, you don't want to run it down, you need to charge it until it's 42v, or thereabouts. Switch the damn thing on and don't switch it off until it's working properly. Charge it up with it switched on. Don't stop charging until you get the green light on your charger.

Thanks dave but as i stated at the very beginning of the thread the green light comes on immediately, as soon as i connect the charger. The other day i left it on the charger for about 5 hours, all the time the green light was on, after this time it still only showed 2 of the 5 lights on the bike.

Yes, but you didn't have the battery switched on, did you?
  • Author
Yes, but you didn't have the battery switched on, did you?

sorry d8veh but as my post clearly stated i did turn it on. as mentioned earlier, without it turned on it was reading 0.1v and as soon as i took people's advice and turned it to on to test it, it read 32.6v.

 

in clarification,

1) i have attempted to charge the battery for many hours and it still never shows more than 2 of the 5 leds on the bike's read out.

2) as soon as i put it on the charger and switch the charger on the light on the charger is green from the off as opposed to yellow/orange

3) when i first took peoples advice to measure the volts i was doing it with the battery switch off. i then this evening charged it back up for 4 hours (again the light was green even though it was nearly depleted from last night) and then i turned the battery on and tested with the metre and the reading was different than before. instead of the 0.1v as before it read 32.6v.

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