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well get a bench charger if you dont want to use the factory chager. i really dont like the factory chargers. i rather use bench charger so i can charge the cells slowly to make the cells last longer without overheating them which can lead to damaging the cells in the battery pack. of course this is my stupid opinion.

Well good for you but your statement didn't solve the problem.

@@grandpaworks8632 Sure it did...it reccommended you 'Buy a Stihl'...problem solved! Lol 😆

ok so let me get this right you put a good battery into the charger and connected wires from the battery terminals to the bad battery terminals and it charged them both and you now have two good batteries. right?

@@grandpaworks8632 I drilled a hole in the charger, then I attached wires to the charging terminals inside the unit. I soldered alligator clips to the ends, then put them in the dead battery. The charger thinks that its charging one battery. I thought of this when i was looking for the zener diode to install at bypass switch. There are 2 zener diodes in the circuit ZD1 and ZD2. One rejects a battery that's too low and the other prevents over charging.

Thats right so long its under warranty.

Thats what people are suppose to do but most people do not have common sense. I would have taken them in if I had proof of purchase and receipt within the warranty period.

@@grandpaworks8632 I didn't have one. I just called the 1 800 number that they gave me and I Google and put the serial number and it told me when it was bought so I told. The 1 800 number when it was bought and they told me just go into the store and they would give me a gift card for like close to 300$

And they gave me a number I had to give the lowe's store Oh so you don't need a receipt

@@henryar5666 interesting i guess its who you talk to because they told me I must have a receipt showing proof I purchase the battery and I must take it to the place I purchased. So I never pursue thereafter.

Hello sir fortunately for me I purchase some dead batteries and harvest the cells. Now I haven't figure the cost to harvest cells for this project. I'm more concerned about my ability to do such a task with 1 half ass hand and the other for show. I also had most of the equipment to harvest dead batteries. I look for the lower priced dead batteries on ebay or garage sales. I took apart 10 batteries and I have enjoy harvested cell to create or rebuild 8 batteries. I think my average cost for dead batteries was roughly $20.00 including shipping for each battery I purchased. Each battery had anywhere from 1 to 6 bad cells so I get a pretty good yield in harvesting. I hope I answered you questions.

hello sir you just need to look for dead batteries online on ebay, craigslist or garage sales. cost from $20-$30 each. i do also advertise that i will buy dead lithuim-ion batteries. i also sell dead lithuim-ion batteries. i have roughly 60 or more kobalt 80v batteries for harvesting. each one has about 2 to 6 bad cells out of 20. i torn apart 10 batteries and out of 200 cells i pulled 170 cells. i ran on capacity charger tester and 20 cells are not usable due to resistance and capacity. so good useable was 150 cells and i made 1 like new kobalt 80 volt 2.0ah battery and i have enough to rebuild 6 more batteries. i could sell as rebuilts for $100.00 or more with a 1 year guarantee. is it worth it in labor time? no but im having fun teaching my bad hands and keeping my mind busy. because i proved to my mind that i can do it! thats worth a million dollar to me

@@grandpaworks8632 Sounds like a great hobby keeping active! I just tore my 80v Kobalt battery apart and each cell showed everything from a slightly negative number to 2 volts. I put the 2 volt one on my XTAR charger, but it wouldn't even see the battery. I ordered a 20 pack of cells from aliexpress just to get this battery back up. Hope those INR cells are legit ;)

@@MrWotok in my opinion xstar is not a good charger to use for 18650 lithuim ion cells. i use zanflare c4 for capacity/charging and miboxer to charge them. good luck and yes i wish i could have started long ago. i'm already 1 foot in the grave and my body is telling to stop. i see youngster wasting there time doing nothing by text or play games instead of learning. in your opinion do you think i should include spot welding and soldering in these video? i really don't think i need to because there's so many other videos showing those topics. take care.

@@grandpaworks8632 If spot welding is part of your process, show it off! You never know if someone will pick up something they didn't know before :)

No it should block anything. I have swapped the bms with others that had burnt parts on the bms and they charged and worked on tools. Im getting ready to solder the bms wires to the cells this weekend. I'll post it when I'm done whether it worked or not.

hello well i'm posting another video with the battery and i have it all plugged in and right now it seems to be working just fine and i will post another showing it actually working ok

@@grandpaworks8632 Thank you for answer! It helped me a lot and gave me courage.

Yeah I'm not sure but I believe its the mofsets on the backplate. I think they got to hot and now a cold solder joints. Working on this rebuild and when I'm done I will test my theory. Unless someone else has a better idea.

Not sure what you are talking about. So stick it in the charger and let it sit in the cradle for a week. Then I try it? Well after it charges it turns off because its fully charge. So I just don't see how letting the battery sit in the charger is going to make the bms inside going to reset and wake up working.

I have 8 batteries and 6 out 8 is bad but can bring them back to life with a charger by pass hook up from something like a battery charger with small clamps to clamp on negative and positive leads of said battery and also if lithium ion batteries get below certain threshold of low battery voltage the charger for them goes into limp mode and shows battery is bad when if done and charged properly they are 99% good but just have get battery voltage up to 60 volts or higher for the factory battery charger detects enough voltage to kick in processors within battery chargers !! Hope this helps some cause I bought over dozen of these batteries back to life like this

well i finally figured it out and its not good. i found 1 bad cell which cause the problem. it looked ok but i put the multimeter on all the cells and all were 4.0 and the bad cell 3.25. which means it has to be replaced with another stable cell. yes i could charge up the bad cell but i'm sure it will not keep up with the other cells and cause the same issue. so rebuilding is what i'm doing. see my 5 part videos rebuilding

Interesting.

battery well i finally figured it out and its not good. i found 1 bad cell which cause the problem. it looked ok but i put the multimeter on all the cells and all were 4.0 and the bad cell 3.25. which means it has to be replaced with another stable cell. yes i could charge up the bad cell but i'm sure it will not keep up with the other cells and cause the same issue. so rebuilding is what i'm doing. see my 5 part videos rebuilding

well i finally figured it out and its not good. i found 1 bad cell which cause the problem. it looked ok but i put the multimeter on all the cells and all were 4.0 and the bad cell 3.25. which means it has to be replaced with another stable cell. yes i could charge up the bad cell but i'm sure it will not keep up with the other cells and cause the same issue. so rebuilding is what i'm doing.

well i finally figured it out and its not good. i found 1 bad cell which cause the problem. it looked ok but i put the multimeter on all the cells and all were 4.0 and the bad cell 3.25. which means it has to be replaced with another stable cell. yes i could charge up the bad cell but i'm sure it will not keep up with the other cells and cause the same issue. so rebuilding is what i'm doing. see my 5 part videos rebuilding

no i never could get it working

well i finally figured it out and its not good. i found 1 bad cell which cause the problem. it looked ok but i put the multimeter on all the cells and all were 4.0 and the bad cell 3.25. which means it has to be replaced with another stable cell. yes i could charge up the bad cell but i'm sure it will not keep up with the other cells and cause the same issue. so rebuilding is what i'm doing. see my 5 part videos rebuilding

the voltage fell below the bms requirements and shut off the battery as defective

Mine too.

@@lewisknecht9469 wish we could figure out bad board and where to source one

well i finally figured it out and its not good. i found 1 bad cell which cause the problem. it looked ok but i put the multimeter on all the cells and all were 4.0 and the bad cell 3.25. which means it has to be replaced with another stable cell. yes i could charge up the bad cell but i'm sure it will not keep up with the other cells and cause the same issue. so rebuilding is what i'm doing. see my 5 part videos rebuilding

In my case, I put in a different battery and it works fine.

@@rand49er thank you I appreciate it I just turned it in to Lowe's and I got something different thank you for the information though

checked the cells inside with a multimeter

Haven't had time to do anything.

I’m having same issue.

@@lewisknecht9469 just take it back to Lowe's you got to call the phone number that's on your tool they gave me like 200 and some bucks almost $300 credit got to let him know it's junk

well i finally figured it out and its not good. i found 1 bad cell which cause the problem. it looked ok but i put the multimeter on all the cells and all were 4.0 and the bad cell 3.25. which means it has to be replaced with another stable cell. yes i could charge up the bad cell but i'm sure it will not keep up with the other cells and cause the same issue. so rebuilding is what i'm doing. see my 5 part videos rebuilding

I had a 5Ah battery go bad that went with a lawnmower. Apparently, they didn't make the 5Ah batteries anymore so they had me return the whole lawnmower and replaced it. The new lawnmower came with a 6Ah battery. Okay.

well i finally figured it out and its not good. i found 1 bad cell which cause the problem. it looked ok but i put the multimeter on all the cells and all were 4.0 and the bad cell 3.25. which means it has to be replaced with another stable cell. yes i could charge up the bad cell but i'm sure it will not keep up with the other cells and cause the same issue. so rebuilding is what i'm doing.

your hire if you can figure it out for me. all that is over my head. all that protective coating makes it to hard for my hands to hold it steady to try peeling away to see the connections. i do value your feedback and i hope really hope i can figure out line by line exactly what you are talking about and try to comprehend the meaning. how to test the connections besides holding the connections with my bare hands and telling you how it worked from my grave. i was thinking of taking the boards off the power and then try to check continuity between the parts but if the solder is a cold joint then i may need to examine that as well after getting that protective stuff off. or just sell them pennys to the dollar. or pay you to see if you can fix them

@@grandpaworks8632 I would not disconnect the cells from the board till I know if the failure is by design or not. For instance on TTI batteries if you disconnect a cell or all the cells , or if it just becomes sufficiently out of balance with the other cells, the BMS disables use of the battery. TTI is good enough however to make it resettable once the issue is resolved by re-balancing the cell voltages. However a couple packs that I disconnected all the cells from the BMS(that were completely dead already anyways) would not reset, (not sure if it was defective the whole time or its by design) Others like Makita and DeWalt are not resettable (at least as far as I know) the BMS will either never again enable the charger, tool or in some cases both. Obviously if its one of these types, its over once voltages of any cell position drops below the trigger voltage. Often though the BMS will tolerate unbalanced cells and cut off the tool when the overall voltages reaches a set point, till its charged again leaving the operator to notice dramatically shorter runtimes. If you remove a cell without providing a substitute voltage while you change the cell, the BMS disables permanently when it detects the repair attempt. Have you tried pressing the gauge button just after starting the tool the tool to see if the level stays up above two bars? Bad battery cells can deceive you by having full voltage on your meter but nothing when actually loaded. digitizer101 said it has to be charged again to get it to run for the one second, this would lend to the theory there is still a bad cell passing the his volt testing but dropping voltage immediately with the load. The fact that it works again at provides hope that the BMS is not against working again when the issue is resolved. However I added two Ridged battery feet in series to a kobalt 40v polesaw I have. If I put the ridgid bateries on it without the kobalt battery in place, it runs for a few seconds and shuts down not seeing the BMS run signal. But works fine with the 40v battery also in place.Still works for me since I can just keep the kobalt battery full changing out the Ridgid batteries that I have far more of. its BMS stays happy and so do I. LOL This does lend to theory though that these 80v batteries are actually good, running the tool till it times out not seeing the uncooperative BMS's run signal. As far as hiring ,We might be able to work something out. my mail is at yahoo . com. I will sent the first part another way.

MORNING SIR SORRY BEEN BUSY BUT I DID GET A NEW DEFECTIVE BATTERIES AND SO FAR ALL IS WELL CHARGING AND WORKING. I DID GET REALLY BAD ONE THAT NEEDS NEW CELLS.

morning so far no kobalts failures. but here is a ryobi failure. if you think you might know the answer please let me know and what would be the cost for your services if it works? czcams.com/video/T6xMwPbcvn0/video.html thanks rick

Well I still haven't tried your suggestion yet but hopefully soon.