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by Gary12345
Fri Apr 26, 2019 6:14 am
Forum: Batteries and Battery Management
Topic: not charging my iON, cell or CMU or BMU problems
Replies: 86
Views: 24798

Re: not charging my iON, cell or CMU or BMU problems

I do not know, as of now, where is this board physically located. Any pointer to this information would be greatly appreciated. Hi, Your videos show exactly the same issue as I had, where voltages jumped up and down, mine was also CMU10. I would not buy a replacement CMU, instead fix the one you ha...
by Gary12345
Tue Apr 23, 2019 3:02 am
Forum: Batteries and Battery Management
Topic: not charging my iON, cell or CMU or BMU problems
Replies: 86
Views: 24798

Re: not charging my iON, cell or CMU or BMU problems

** Just realised this is a really old thread - note to anyone else reading!! ** Hi, i just fixed the same issue on my i-miev. It is failure of the voltage monitoring chip on one CMU, the board in one of the battery modules. Mine was also pack 10, so it seems these pack 10 chips like to die. I got a ...
by Gary12345
Thu Apr 18, 2019 2:45 pm
Forum: Batteries and Battery Management
Topic: Is my battery dying ?
Replies: 84
Views: 34783

Re: Is my battery dying ?

Oh and i've got a dual 10A RC charger and a separate 10A discharge capacity tester, so in ~5 hours I can do 1 full charge, 1 full discharge and a storage charge (50% charge once they have been tested).
by Gary12345
Thu Apr 18, 2019 2:39 pm
Forum: Batteries and Battery Management
Topic: Is my battery dying ?
Replies: 84
Views: 34783

Re: Is my battery dying ?

What voltage are you planning to discharge them to when testing their capacity ? I will charge to 4.1v and then discharge to 3v. The Yuasa spec sheets show that they test between 2.75-4.1v but there is very little below 3v. That should give me a good idea if the cells are usable in a car. I don't h...
by Gary12345
Tue Apr 16, 2019 6:15 am
Forum: Batteries and Battery Management
Topic: Single LEV50-cell wanted for our Citroen C-Zero
Replies: 107
Views: 54580

Re: Single LEV50-cell wanted for our Citroen C-Zero

Hi, Will do, they still havent arrived ! Its a (very) long story but i'm hoping they will be here in the next 2 weeks, after which i'll test the cells to see what the capacity is. I have to say I am still very tempted to build a replacement cell out of 18650's - I can't see anyone has done it yet an...
by Gary12345
Tue Apr 16, 2019 6:10 am
Forum: Batteries and Battery Management
Topic: Is my battery dying ?
Replies: 84
Views: 34783

Re: Is my battery dying ?

I wouldn't see any issue using LEV50N as a replacement for LEV50 if that is what you can find. Testing the replacement cells first is a must though as its quite a bit of work taking the pack out. Testing can be done with a fairly high power RC charger, or any decent RC charger and a separate battery...
by Gary12345
Mon Apr 08, 2019 6:59 am
Forum: Batteries and Battery Management
Topic: BMU Wanted. Battery pack 14.5kWh
Replies: 3
Views: 1775

Re: BMU Wanted. Battery pack 14.5kWh

Hi, That is an interesting component - if that were a 16Kwh battery pack then the circuit board in that location is a ground fault indicator circuit. I'm not totally sure if it does the same job in a 14.5Kwh battery pack as it looks a bit different but most likely it is the same thing. it is worth c...
by Gary12345
Mon Apr 08, 2019 6:25 am
Forum: Batteries and Battery Management
Topic: Both of my Peugeot Ion's won't charge
Replies: 12
Views: 4593

Re: Both of my Peugeot Ion's won't charge

Sent you a PM regarding transport ;-)
by Gary12345
Fri Apr 05, 2019 3:14 am
Forum: Batteries and Battery Management
Topic: Single LEV50-cell wanted for our Citroen C-Zero
Replies: 107
Views: 54580

Re: Single LEV50-cell wanted for our Citroen C-Zero

If anyone is in need, i will shortly have some i-miev cells available. Just waiting for delivery of an 8-cell module and all i need from it is a component from the circuit board on top of the pack.

Thanks.
by Gary12345
Thu Apr 04, 2019 9:11 am
Forum: Batteries and Battery Management
Topic: replace 8 pack cells and bms
Replies: 6
Views: 2257

Re: replace 8 pack cells and bms

Hi,

Were the batteries actually 0v or did they actually have charge but the CMU (circuit board on the battery module) reported 0v to the battery ECU?

Some people have had issues with the voltage monitoring chip on the CMU, and have had this replaced with a new chip.

Thanks,

Gary.

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