M/L don't repair cells

this is what M/L email back to me...
Have you tried charging the battery again and checking the run time?

If you only get a few hours again, then the chances are one or more of the cells are no longer holding a charge.
We can check out the battery for you, but if the reduced run time is due to faulty cells, then we cannot repair it.
The only option is to buy a new battery.

cheers
stoppsy

stoppsy wrote:
If you only get a few hours again, then the chances are one or more of the cells are no longer holding a charge.
We can check out the battery for you, but if the reduced run time is due to faulty cells, then we cannot repair it.
The only option is to buy a new battery.

cheers
stoppsy

Yeah they can not repair the cells, but surely they can replace them? And yes the other option is buy a new one, it's not the only option.

cheers dave

I thought that they would be able to be replaced

Whats a new battery worth, 5-6 grams

Hey stoppsy.

I haven't looked inside a ML battery as I run an older machine, but I am sure you can replace the cells in it yourself. Somewhere I have a link to an excellent Li-Ion cell supplier that should do. Or better still, to make your hunting easier, open the battery case and see what cells it has in it.

Cheers

i messaged coiltek to see if they had any 4000 batterys but havn't got anything back.. i might message M/L to see if they have any 4000 batterys...
cheers
stoppsy

Stoppsy, the cells in the battery I'm pretty sure is not much more than a bank of recharble batteries, might pay to open it up and have a look inside. could be a quick fix....I'm sure that someone on the forum would be savy on this and may be able to help or advise.

What about a 4500 battery? then you will have the amp for your external speaker too.

GoldstalkerGPX is right stoppsy you don't need a 4000 battery as a 4500 or 5000 battery will do the job quite nicely.

And if you look on eBay you can find the same cell size Li batterys and do the job your self.

cheers dave

Typically, if the batteries can be charged to capacity then there's no broken circuit!

Hey Stoppsy,
Something worth trying before outlaying for a new battery.
Rig up your machine with coil attached.
Before going to bed, turn it "on" and leave it overnight.
Recharge it next morning.
Discharge it again over the following night and see how it goes.

Don't quote me, because I can't verify the following info because have never opened up our 4500 batteries.
I was told these are the batteries used;
http://www.premierbatteries.com.au/sm/lithium/Rechargeable/UR18650/UR18650%20(2.6Ah).pdf

Already posted this once and it disappeared into cyber space?

There are these on eBay fairly cheap, you would need 8 off them. Join 2 batteries in series to give 7.4v times 4 sets of two. Then join the 4 sets in parallel to give plenty of run time.

http://www.ebay.com.au/itm/1-x-18650-4200mAh-3-7V-Li-ion-Rechargeable-battery-cell-Tab-Ultracell-Rose-/190579539367?pt=AU_Electronics_Batteries_Chargers&hash=item2c5f6cfda7

the inside of the battery, the battery packs are stuck in there very well and can't move them





cheers
stoppsy

Hi Stoppsy,

They probably use either hot melt glue or double sided tape to hold the cells in place. Try heating up the housing a little and then carefully pry the batterys off. Have you found the other spare battery yet?
Would there be a kind soul out there willing to lend you a battery?
I will repack your battery with new cells, for the price of the new cells. Could be out your way on saturday, but not too sure yet. You would be without your battery for a week or 2 while I sourced the new cells and installed them....

Cheers Mick

Stoppsy,
Don't heat the batteries!
Enough said!
Cheers
Peter

G'day Stoppsy , I see the date on your battery means your batteries are nearly 5 years old ...{ assuming they were new when battery was put together }..Just pry those suckers out of there and replace ALL of them ..I've never had lithium ion batteries in some laptops last more than a couple of years ..If one cell is gone then the rest are not far off failing.....Probably 80 to 120 bucks for decent replacement cells { guessing ? } cheers ,Paul...

stoppsy,
Offer still stands
PM me. Could meet centrally at say Avoca
Cheers spinna

Pry those suckers out Stoppsy,so we can see what it is we need to source to re-rig our own units.
I`ll be buggered if Im gunna pay $400 for a new battery.Thats off the planet

Pretty sure that these are the same specs and at $5.54 for 2 thats not real expensive.....just a bit over $22 for enough to do the job.

http://www.ebay.com.au/itm/2-PCS-18650-2400mAh-3-7V-Li-ion-rechargeable-battery-/170610407507?pt=AU_Electronics_Batteries_Chargers&hash=item27b92c3853

These ones are a little more expensive, it would be just a bit over $44 for enough to do the job, but they have the tabs allready on the ends for joining together and about double the mAh hour rating

http://www.ebay.com.au/itm/2-x-18650-4200mAh-3-7V-Li-ion-Rechargeable-battery-cell-Tab-Ultracell-Rose-/190579539437?pt=AU_Electronics_Batteries_Chargers&hash=item2c5f6cfded

Mechanic wrote:
I will repack your battery with new cells, for the price of the new cells. Could be out your way on saturday, but not too sure yet. You would be without your battery for a week or 2 while I sourced the new cells and installed them....

Cheers Mick

Gee Mick, keep telling us that and you might have a new cottage industry to keep yourself entertained

Robert

Contact Reeds Prospecting supplies, the people who make the lucky lark batteries makes the ML batteries. $120-$150 from memory to repack your case.

strewth narrawa,you're looking at twice that at reeds,i know,just had mine done,$260. reg

arjay wrote:strewth narrawa,you're looking at twice that at reeds,i know,just had mine done,$260. reg

You may be right Arjay, the 120 was what i was quoted a couple of yrs back for my 4000 batt repack.
New owners now so i guess, prices are subject to change without notice applies.

coiltek today just said to send it to M/L to get it tested and they will tell me what needs to be done and email me about it...
cheers
stoppsy

Hi All , Becareful changing the cells in your ML batt.pak. You just carnt buy new cells and solder them in and charge it and expect it to go, IT WONT, I know I tried, I later found out" after killing a lot of cells" that each cell has to be balanced with all the other cells before they are put in .Even then its a slow job bringing them all up to top volts, at the same time. If one cell is low it will kill all the others.The top volts for a cell is 4.2 and the lowest it can go is 2.2..I use a swallow ac/dc charger to do each cell on its own...And it works.... If you are going to do it dont just pull the cells out,cut the pink cover down the middle and take the cell out leaving the cover in there ,you put the new cell in side the old cover. And get the + - ends right, . And dont forget to put the black ties back to keep them tight..Good luck, pm me if you want more info..

I use a swallow ac/dc charger to do each cell on its own

Iv been using the old Swallow Advance for a few years now to charge and rejuvenate my batteries. Top bit of gear that and money well spent when your dealing with so many battery types.

Narrawa wrote:

I use a swallow ac/dc charger to do each cell on its own

Iv been using the old Swallow Advance for a few years now to charge and rejuvenate my batteries. Top bit of gear that and money well spent when your dealing with so many battery types.

Yes, dont know what I would do with out it, Ive just brought a 200 A/H Li-ion batt for the van, and its been a BIG eye opener. Even with that batt, I had to balance each cell before it could be used.. But half the weight of the two AGMs I had, and twice the useable amps..
I used the little swallow to top the slow cells up as it charged, and a globe with 2 wires to pull the ones down that were in front. All good now its putting it in the van that the next job..
thanks for the reply, Bob