Search found 97 matches

by Enpro
Aug 24 2014 5:08pm
Forum: E-vents
Topic: Looking for dutch performance e bikers.
Replies: 6
Views: 1958

Re: Looking for dutch performance e bikers.

The thing is i can't really go on road because its illegal you know ;)
I guess the same goes for your electric board right?
by Enpro
Aug 24 2014 3:38pm
Forum: E-vents
Topic: Looking for dutch performance e bikers.
Replies: 6
Views: 1958

Re: Looking for dutch performance e bikers.

666yeti666 wrote:only for bikers ... ??
Well anything electric that can go offroad and does more than 50km/h goes :wink:
by Enpro
Aug 18 2014 5:55pm
Forum: E-vents
Topic: Looking for dutch performance e bikers.
Replies: 6
Views: 1958

Looking for dutch performance e bikers.

Anyone in the Netherlands who want to do a meeting?
And of course a little riding 8)
Pm or mail @ Illcue@live.nl
Cheers :pancake:
by Enpro
Jul 31 2014 5:42pm
Forum: Battery Technology
Topic: Premature power loss in headway pack
Replies: 10
Views: 971

Re: Premature power loss in headway pack

Ok problem solved. Turned out the controller was set to 65v cutoff because it came from a linmo2 battery. Now everything runs fine!. i'm so happy :mrgreen: Just one more question. It kind of worries me that the connectors for balance leads get pretty warm when balancing. is this normal? I guess its ...
by Enpro
Jul 31 2014 2:40pm
Forum: Battery Technology
Topic: Premature power loss in headway pack
Replies: 10
Views: 971

Re: Premature power loss in headway pack

i've found the problem!! its the controller itself. i've tested my system with another controller and it ran perfect. lots of continuous power! Battery was fine right from the start. I did some stupid things with this controller in the past like cutting one of the shunts to make it draw less amps. (...
by Enpro
Jul 31 2014 11:16am
Forum: Battery Technology
Topic: Premature power loss in headway pack
Replies: 10
Views: 971

Re: Premature power loss in headway pack

Sorry for bordering...
Turned out it is a bad connection after all... Deeply ashamed :oops:
I connected the headway cells together with a threaded pin in pairs of 2 . seems like that isnt working so now i'm going to replace all connections with stainless steel rings. Should work right?
by Enpro
Jul 31 2014 9:29am
Forum: Battery Technology
Topic: Premature power loss in headway pack
Replies: 10
Views: 971

Re: Premature power loss in headway pack

BMS is functioning normally to balance the pack and that high cell is not really outa balance. how much current are you seeing through the wattmeter? it could be exceeding the overcurrent limits of the BMS. which BMS are you using? post up a picture, it may have the current capacity rating on the l...
by Enpro
Jul 31 2014 8:23am
Forum: Battery Technology
Topic: Premature power loss in headway pack
Replies: 10
Views: 971

Re: Premature power loss in headway pack

Okay one cell is slightly out of ballance. 1. 3.60 2. 3.61 3. 3.60 4. 3.60 5. 3.60 6. 3.60 7. 3.61 8. (3.66) 9. 3.58 10. 3.60 11. 3.60 12. 3.60 13. 3.60 14. 3.61 15. 3.60 16. 3.60 17. 3.60 18. 3.60 19. 3.60 20. 3.60 Bms heatsink is getting slightly warm and the charger is on green but still pushing ...
by Enpro
Jul 30 2014 6:44pm
Forum: Battery Technology
Topic: Premature power loss in headway pack
Replies: 10
Views: 971

Re: Premature power loss in headway pack

I assembled the pack myself yes and i connected the cells with self made 6 gauge wire. I soldered long tips and squashed them into an O ring. Than sandpapered and cleaned them. They actually have a pretty large contact area so i guess they make good contact. And i Checked the individual cells before...
by Enpro
Jul 30 2014 4:42pm
Forum: Battery Technology
Topic: Premature power loss in headway pack
Replies: 10
Views: 971

Premature power loss in headway pack

Okay. I have this 20 cell headway battery pack with http://www.batterybms.com/64v20spcmbmspcbforlifepo4batterypack/PCB-D131.html this bms. The problem is that at full charge i've got full power out of my 45amp controller and already after a few meters the power drops substantially. The cells are bra...
by Enpro
Jul 22 2014 5:26am
Forum: Battery Technology
Topic: Headway cell manufacturing dates
Replies: 7
Views: 806

Re: Headway cell manufacturing dates

Thanks for clearing this up!.
I've bought the cells from a german model car company. http://shop.strato.de/epages/61333079.s ... 2040160%22
Cells all read 3.33v so i guess they're okay for now.
by Enpro
Jul 20 2014 2:57pm
Forum: Battery Technology
Topic: Headway cell manufacturing dates
Replies: 7
Views: 806

Headway cell manufacturing dates

I ordered 20 headway 40152 s cells and i noticed there is a date on them that says 13-09-05.
Does this mean the cells are almost 9 years old?
And don't these cells have expiration dates?
by Enpro
Jul 19 2014 10:20am
Forum: Items for Sale - New
Topic: Vector Storm e-bike Frame 299€ / Parts WORLDWIDE
Replies: 2352
Views: 342214

Re: Vector. New 5.4 kW ebike from scratch.

So how much does it weigh?
by Enpro
Apr 17 2014 10:46am
Forum: Battery Technology
Topic: Charging a 28v lithium pack with a 42v/36v charger bad?
Replies: 19
Views: 1152

Re: Charging a 28v lithium pack with a 42v/36v charger bad?

i cannot believe this thread is still going on. it was recommended you rebuild the battery to 10S3P back at the beginning but this useless dancing around the obvious has taken you further down a dead end. if you cannot fix it then just go buy a new battery and see if you can keep it alive. How can ...
by Enpro
Apr 17 2014 10:17am
Forum: Battery Technology
Topic: Charging a 28v lithium pack with a 42v/36v charger bad?
Replies: 19
Views: 1152

Re: Charging a 28v lithium pack with a 42v/36v charger bad?

I found out the problem off all the death cells! its the frikin bms that some how discharges my cells at the 3th balance lead. I just managed to save another cell by disconnecting the balance wires. All the cells that are death now were on the 3th balance wire. The cell was reading 2.7 when i checke...
by Enpro
Apr 17 2014 4:24am
Forum: Battery Technology
Topic: Charging a 28v lithium pack with a 42v/36v charger bad?
Replies: 19
Views: 1152

Re: Charging a 28v lithium pack with a 42v/36v charger bad?

On the dead cells did you have you check them on the cells them self ? Did all 8 just die or was the battery in storage without charge for two months. I want to know more about the dead cells ? The 1st death cell (the one that died a year ago) is completely death reading 0.0v and the other one 0.6v...
by Enpro
Apr 15 2014 4:37pm
Forum: Battery Technology
Topic: Charging a 28v lithium pack with a 42v/36v charger bad?
Replies: 19
Views: 1152

Re: Charging a 28v lithium pack with a 42v/36v charger bad?

Well. It turns out it was the voltage regulator but unfortionly it only goes to 36v and i actually needed 34v but i'm very happy with it anyhow!!. Also i noticed 1 of the 2 chargers outputted 43v instead of 42 so maybe thats why it never balanced properly. Also both chargers have coil/cap whine but ...
by Enpro
Apr 15 2014 2:17pm
Forum: Battery Technology
Topic: Charging a 28v lithium pack with a 42v/36v charger bad?
Replies: 19
Views: 1152

Re: Charging a 28v lithium pack with a 42v/36v charger bad?

Well it turned out to be a blue pot not yellow.
It says VR = Voltage regulator??

Image
Image
by Enpro
Apr 12 2014 6:43pm
Forum: Battery Technology
Topic: Charging a 28v lithium pack with a 42v/36v charger bad?
Replies: 19
Views: 1152

Re: Charging a 28v lithium pack with a 42v/36v charger bad?

Using the good old water analogy, picture the charger and the battery as two buckets connected by a hose. The charger is a full bucket, the battery an empty one. As the water level gets close to the same in both buckets, the flow through the hose slows. I know it's not accurate, but it gets people ...
by Enpro
Apr 12 2014 9:06am
Forum: Battery Technology
Topic: Charging a 28v lithium pack with a 42v/36v charger bad?
Replies: 19
Views: 1152

Re: Charging a 28v lithium pack with a 42v/36v charger bad?

There is a yellow potmeter inside that charger but dont have a clue if its for volt adjusting.
And how can it taper the amps? And what causes it to taper the bms/charger/voltage" equalibrium" from the charger to battery?
by Enpro
Apr 12 2014 5:48am
Forum: Battery Technology
Topic: Charging a 28v lithium pack with a 42v/36v charger bad?
Replies: 19
Views: 1152

Re: Charging a 28v lithium pack with a 42v/36v charger bad?

Nobody asked the obvious question: Do you know why 8 cells died? I'll let the more expert tell you what overdriving the charge will do, but I should think you already know, you're just hoping it's not as bad as you believe. They are factory assembled battery packs not rc car lipo's. Its a Golden mo...
by Enpro
Apr 11 2014 6:30pm
Forum: Battery Technology
Topic: Charging a 28v lithium pack with a 42v/36v charger bad?
Replies: 19
Views: 1152

Charging a 28v lithium pack with a 42v/36v charger bad?

Here is the problem. I have a 36 linmo2 (16ah) battery pack with 40 cells in it. 8 out the 40 died and i bypassed them to make the continuing to work so that leaves me with 28v nominal (32.9v charged). The bms is disigned to cut off if any cell reaches 4.15v and it doesn't measure the whole pack. So...
by Enpro
Jan 23 2013 6:38pm
Forum: Battery Technology
Topic: premature lvc by overdischarge?
Replies: 42
Views: 2396

Re: premature lvc by overdischarge?

Well it has been a while 8) . Csm thx for the help m8 :wink: I kind of bypassed the faulty cells and that solved the lvc problem for about a year. A couple of weaks ago i wanted to take my bike for a spin and it ran out of juice after like 20min ride time again. Now i'm having the exact same problem...
by Enpro
Apr 03 2012 1:48pm
Forum: Battery Technology
Topic: bypassing faulty cells
Replies: 12
Views: 814

Re: bypassing faulty cells

I dissembled the 42v charger and it does have a little pot meter covered with glue. How big are my chances that this is indeed a voltage regulator? And can i just dail the thing a little bit without anything exploding? Edit: Probably a bad idea after all so i just stick with the original bypass plan...
by Enpro
Apr 03 2012 5:47am
Forum: Battery Technology
Topic: bypassing faulty cells
Replies: 12
Views: 814

Re: bypassing faulty cells

I'm saving money now to get 72v/16ah headway system so this only need to work for a couple of months.. The label says lifepo4 but everyone that i showed this pack at on the golden motor forum tells me they are linmo2 cells... The cells themselves dont have any label or markings whatsoever... The sta...