Lithium Ion battery Ep. 2 testing & replacing cells
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- Опубліковано 25 тра 2018
- The 2nd video in the Series covering the various problems & fixes that you may have with your Lithium Ion power tool batteries. In this case the 4 Makita 18v battery packs for my power tools all failed one by one.
The strange thing that I just couldn't get my head around is how they could be working fine one day then dead the next? This niggled away in my head for a while until I decided to investigate further....lets face it, nobody wants to pay over $100 for a new battery!
There will be a number of Episodes in this Series, the next will cover how to install the new circuit boards.
Andy Mechanic - Авто та транспорт
Here's a hint that might help someone.. I purchased a DeWalt cordless drill a couple years back which had 2 batteries that came with the set.. One battery was DEAD and would NOT charge.. Since the drill worked great and a power horse vs. what I have had down thru the years, I did not want to send it back for a refund, shipping etc.. So after a few months I was thinking about buying a new battery, but didn't really want to spend $40-50 at the time.. I had a thought, jumped on youtube, and found this info.. Take a good battery which I had and hook the negative to the negative together then hook the positive to positive and hold for about 4 seconds at least.. The first time I tried it, it sparked, and then I tried charging but didn't work.. So I tried jumping it again for about 4-5 seconds. The battery got enough charge that time and the charger worked, and now I have my new battery fully charged and working great.. Hopes that this helps.. On watching this video, if you know the cell voltage, see if that cell will charge before throwing one away.. It might just need a charge.. Do NOT put a higher voltage charge on a low voltage cell or it will blow up.. Common sense.. 5 volts is not the same a 1.5 volts is it.. Hopes this helps someone..
Good work . Thanks for posting.
I like your unusual format quite differant but it works. BUT that first battery video is a dangerous process even though its 5 years old I'm surorized someone hasn't exploded a battery. Two high capacity batterys across a dead li-ion battery is a recipe for a fire.
Hey there. Just wanted to say that I'm enjoying your videos. I'm also a tuber from new zealand and think it's awesome when I find another new zealand channel. Keep up the awesome work 😆
Thanks :-) Good Luck with your channel too. Cheers Andy
You are a brave man Andy I could feel the sweat rolling from your face as you soldered those Batteries! | Have been through all this from my Lithium Helicopter flying days and feel your pain but also appreciate how good it feels to save a bit of money fixing them(especially for a Northerner!)
I just watched a couple of your other videos I had to subscribe. I DIG THE VID. STAY FUNKY
Good video !
Cool channel man!
With your18650's you may want to use a charger on the individual batteries. Any vape shop should sell a safe charger. If you have a dead laptop battery pack you should be able to steal cells from it. Check their rating though.
Safety tip: the body on these are negative. Be careful not to tear the heat shrink as it makes it easy to short. Short one and it'll vent. These batts also have built in vent/protection. A small flat head screwdriver pushing down and under the positive terminal may reverse this. Not recommended given the availability of good ones.
Good work buddy!
Cheers, great info. Thanks. Andy
One suggestion. Be very carefull using a screwdriver to peel off the tabs on the positive end of the batteries. If you short the center button to the case you will definately get sparks or worse. You can also push the center of the button in and destroy the vent. Good video otherwise.
More like potential thermal runaway. Your looking at the BMS!
Number 3 on the circuit board killed the two cells in parallel. The batteries would have been fine if the board didn't fail. Notorious for this issue.
i have for YEARS now been replacing those 18650 cell packs
-find Chinese cells awful despite ERRONEOUS higher capacity ratingss
-best are Japanese (Panasonic ,Sony) and Korean (Sanyo) cells
-just replaced AWFUL 14 cell 1.2 a ni-cads in 18 v pack -with 12 of 18650s
-so went from 20 a/h to 42 A/H -at 1/2 the weight
and double the capacity in same case but 1/4 inch taller
Great video, thanks. Did you have to solder? Would tape or similar not hold the tabs in place well enough?
no tape would not and soldering isnt recommended(though it does work) a cheap spot welder for lithium cells is what you need. I know this is hella late but now you know,lol.
Nice distraction, though! Can you check the individual cells of the 3 set? I have a hobby charger for RC cars that will charge these individual cells. Im going to see if I can find a low cell and then bring it back or replace a few bad cells. The big deal with packs like this and reason for the chip is so when they charge up, all the cells charge to the same voltage at the same time, referred to as balanced. Thanks for the research! Bring back the girls!
Cheers for the info. It's a fast learning curve for me with this topic & your info fills in another piece of the jigsaw. Oh don't worry I need the Tool Girls just as much as you do! Thanks Andy
The corrosion is on the bad cell
for a second there
Andy Mechanic went all AvE today lol . your right to have your goggles and gloves on as wen a 18650 cell gose up it can set the rest of the battery pack of in a chain reaction
Damn! Good to know I made the right call on these....Cheers Andy
I laughed when you were pulling the batteries apart - it looked as though you had a gorilla helping you instead of Hana (whom I missed).
Is there any way into the firmware of that bloody charger through JTAG or something?
Oh, hi Sam!
Check the voltage of each cell!
Where is Hana from???
A modeling/talent agency in Auckland.
those batt's should be low 307 full charge 407 per cell!
I need a fix I have about 4 bad batteries laying around and seem defective for no reason
Work in progress :-)
Battery one took a charge each time maybe 7 or more and each time increased.
any chance of a video of you changing cv joint on a ep3 type r civic with the girls? im stuck...
Sorry, I don't have one of those cars handy. :-(
I think you problem may be a cell imbalance in excess of 0.1volts
Have you tried any of the batteries in a tool to see if any of the charge that you are now seeing is usable?
Yes, but it doesn't last very long as they are all pretty discharged at the moment unfortunately. Cheers Andy
It’s good to know that it can properly discharge to the tool, and that it is the charging circuitry that’s the issue. From the looks of the eBay boards, the length of wire is replacing the extended bit of metal, likely to cut out the use of another custom metal plate.
I miss hana
2.8v is the minimal voltage on a single cell, but I have recovered cells that was 0.09v and even 0.01v which I would only use in a flashlight or similar, I call them zombie cells and even watched them reverse polarity.
How did you meet Hana ????
circuit board may fault out once it detects a failure of a cell
Its below LVC
Explain the glow of the diesel engine
I would disconnect that board so it doesn't draw the me cell down just in case.
You risk starting a fire if you use a new replacement cell.
Did you only test one HALF of a set of 10 batteries?
I know I'm responding to an old comment of yours but I wanted to answer your question.
The battery is wired as 5s2p, five series of two cells wired in parallel. They measured the voltage across each set of two cells wired in parallel and could only make five measurements.
@@dustinbird2090 You still test the batteries one at a time. Granted, when testing you can't test capacity or how it holds a charge or not. Usually, in a pack it's one or 2 that fail.
just to let you no they are the same batts that is used in vaping gear they are 18650 they are cheap to go and buy new
luckyvapez I'm vaping with an 18650 battery right now it was $20 nz
Good to know. Cheers Crew :-)
Mate these batteries shouldn't be discharged below around 3 volts. if they are lower than this they are probably no good. Use genuine Panasonic cells or other reputable brand. The charger may not like the low voltage also.
Thanks Marcus, you are right. That's what I have read too. Plus they should all be around the same voltage too for the charger to accept it for charging so it seems. Lots of variables with these. Thanks for the info. Cheers Andy
The issue for a tradesman like yourself of course is ........ How much do you make per day doing 'proper' work? These experiments have probably used at least a couple of days including editing. That's why trades people just throw them away! For a DIY'er it may well be a different set of economics
I agree completely. I was interested to see if this fix was viable, reliable & easy. It really proved to be none of those in the case of the 3 battery packs I repaired. New batteries every time now :-)
Cheers Andy
@@AndyMechanic Yes, interesting nonetheless and I have a couple of Ryobi batteries that have the same issue. I didn't use them at all for a number of years and whilst Lithium batteries are very good at resisting dormant discharge they do eventually go flat and once they have they are pretty much done with little chance of reviving them.
#3 had one bad cell, stop worrying about Hana and focus on the work and stop prying on the ends on the cells with a screwdriver they have a safety ring for a reason!
It's not going to work... 54:00 you need to replace the circuit board.
Girls can be distracting but I rather look at Heather!
Rather Hana!
Don't need the girlie mate...
Seem kinda ???
Looks like water got in and caused corrosion, trash batter #2
hey Andy ...i think it is not your profession to treat Lithium ion battery the way you handle....please go to your Truck repair.
You are correct!
I Love to see you on operation....repairing your truck
2:27 😮Battery 1, 1st set of instructions you detailed said put the bat aside and let it cool. After you did the last test you said the battery was warm, this would itself cause the failure warning of the makita battery charger.
You talk 2much