i like the idea but its better to check the individual batteries before using easy method buc if one dead wont do much because its in series but like you said its better check them your self it ll make you gain experience in electrical engineering !!
@@ChrisRalph I have left my lithium batteries (LiFePo4) at a summer access only cabin for several winters now. The lowest temperature there is -35degree C. If you do not charge or discharge, and remove all load connections (including the bms), there is no harm. I think lower temperature is actially better for storage only. Almost no loss of charge when returning next spring. I have 25kwh batteries there, all DIY. You cannot disconnect your bms in your purchased batteries unless you can open them.
Right, so they didn't die over one winter. All I can say is use Google and do some research. You will find many voices who say that very cold conditions reduce the life of Lithium batteries.
@@ChrisRalph I have left my batteries there since 2020. I go there every summer since. I have records of how much charge is lost over 6 months of winter. I did not see any sign of degradation. I remember I read it somewhere that says for LFP batteries the lower the temperature the better for storage. I do not know Li-ion batteries in subzero environment. We also have numerous duracell batteries there for years without seeing noticeable change.
@@ChrisRalph Here is the info I can find from internet: " Storing LiFePO4 Batteries in Cold Weather (Winter) Cold temperature is not a problem for lithium batteries because it slows down the internal chemical reactions within the battery, thus prolonging its life. However, although battery chemistry is enhanced in cold weather, extremely low temperatures can cause some battery components, such as the plastic casing, to fracture. Therefore, it's best to keep lithium batteries indoors and avoid extremely low temperatures." They claim ideal temperature should be between -20 to +35 C. My batteries are inside the cabin, but the temperature there can be as low as -35C. I have no control. I cannot bring all the batteries back home in the winter. Too much work every year.
Thanks for another very helpful video on a slightly different topic. Have you any thoughts on NiMH batteries, as they seem far more stable and less prone to some of the problems that you have identified?
I'm shocked that my last comment was deleted/cleaned by YT. Why? It was simply info about storing LFP batteries in cold. I post it again here: Storing LiFePO4 Batteries in Cold Weather (Winter) Cold temperature is not a problem for lithium batteries because it slows down the internal chemical reactions within the battery, thus prolonging its life. However, although battery chemistry is enhanced in cold weather, extremely low temperatures can cause some battery components, such as the plastic casing, to fracture. Therefore, it's best to keep lithium batteries indoors and avoid extremely low temperatures.
Those batteries are crazy expensive more than the tool in some cases. I have used a battery shop vac for wet crevicing...only drawback is dumping water out. 👍
Whowoodathunkit! I'm disappointed that the DeWalt lithium battery packs didn't run at full power with occasional use for more than eleven years and ten hard cold freezing winters left in the shop and eleven summers in blistering hot heat in the metal shed. I've never seen Chris use a shop vac.🤔
They will run better for longer if you abuse them less and that is worth knowing. And I was having problems with them a couple years after purchase, not ten years afterward. If you want to pay $40 a battery and have them last 2 years, it might be OK with you but not with me. If you want to see my cordless Dewalt shop vac out in the field, see: ruclips.net/video/EguYRi0MGPs/видео.html
talking about testing individual cells (and they are cells; you wouldn't call an individual cannon a battery would you?) a way to do this is to test their capacity with a known load. load = watts, time = time, convert time watts and voltage into amp hours if you like. the other way is to use a charger that keeps track of the amount of power you put in the cell. sure if you see 1.8v on a lithium cell it's damaged; but what about 2.9v? a low value high wattage resistor and a kitchen timer; and the ability to make a few data points will save you $$$ down the road.
If I go into a hardware store and ask the clerk where the cells are located in the store, I will get only a confused look in response. In the common vernacular they are called batteries, no matter the original etymology of the word.
Great advice and help thanks Chris, those things are even more expensive here in Australia. You've been very helpful.
Happy to help! Glad you liked it.
This is great to know, thank you!
Glad it was helpful!
i like the idea but its better to check the individual batteries before using easy method buc if one dead wont do much because its in series but like you said its better check them your self it ll make you gain experience in electrical engineering !!
If one of the batteries is truly gone bad, you wont be able to charge via the easy method.
For lithium batteries, coldness is good for the storage. Hot temperatures are generally bad.
Moderate Coldness is good, but if too cold - like near freezing or below, that is bad for Lithium batteries.
@@ChrisRalph I have left my lithium batteries (LiFePo4) at a summer access only cabin for several winters now. The lowest temperature there is -35degree C. If you do not charge or discharge, and remove all load connections (including the bms), there is no harm. I think lower temperature is actially better for storage only. Almost no loss of charge when returning next spring. I have 25kwh batteries there, all DIY. You cannot disconnect your bms in your purchased batteries unless you can open them.
Right, so they didn't die over one winter. All I can say is use Google and do some research. You will find many voices who say that very cold conditions reduce the life of Lithium batteries.
@@ChrisRalph I have left my batteries there since 2020. I go there every summer since. I have records of how much charge is lost over 6 months of winter. I did not see any sign of degradation. I remember I read it somewhere that says for LFP batteries the lower the temperature the better for storage. I do not know Li-ion batteries in subzero environment. We also have numerous duracell batteries there for years without seeing noticeable change.
@@ChrisRalph Here is the info I can find from internet: " Storing LiFePO4 Batteries in Cold Weather (Winter)
Cold temperature is not a problem for lithium batteries because it slows down the internal chemical reactions within the battery, thus prolonging its life. However, although battery chemistry is enhanced in cold weather, extremely low temperatures can cause some battery components, such as the plastic casing, to fracture. Therefore, it's best to keep lithium batteries indoors and avoid extremely low temperatures." They claim ideal temperature should be between -20 to +35 C. My batteries are inside the cabin, but the temperature there can be as low as -35C. I have no control. I cannot bring all the batteries back home in the winter. Too much work every year.
Thanks for another very helpful video on a slightly different topic. Have you any thoughts on NiMH batteries, as they seem far more stable and less prone to some of the problems that you have identified?
I think the lithium ion batteries last longer and have less problems than NiMH in my opinion.
I was hoping for something on nicad batteries.
The method works for restoring Nicad batteries. What were you looking for specifically?
Cool thanks Chris, 👍
No problem 👍
I'm shocked that my last comment was deleted/cleaned by YT. Why? It was simply info about storing LFP batteries in cold. I post it again here:
Storing LiFePO4 Batteries in Cold Weather (Winter)
Cold temperature is not a problem for lithium batteries because it slows down the internal chemical reactions within the battery, thus prolonging its life. However, although battery chemistry is enhanced in cold weather, extremely low temperatures can cause some battery components, such as the plastic casing, to fracture. Therefore, it's best to keep lithium batteries indoors and avoid extremely low temperatures.
I saw your comment and responded to it.
Yea they look like an 18650. I was like that's a lot of cells. I got a ton of these in a crate! 🤠👍 I have nitecore chargers so we will see
Best of luck to you.
good to know !!!!!
Thanks!
Those batteries are crazy expensive more than the tool in some cases.
I have used a battery shop vac for wet crevicing...only drawback is dumping water out. 👍
Thanks for sharing
Whowoodathunkit! I'm disappointed that the DeWalt lithium battery packs didn't run at full power with occasional use for more than eleven years and ten hard cold freezing winters left in the shop and eleven summers in blistering hot heat in the metal shed.
I've never seen Chris use a shop vac.🤔
They will run better for longer if you abuse them less and that is worth knowing. And I was having problems with them a couple years after purchase, not ten years afterward. If you want to pay $40 a battery and have them last 2 years, it might be OK with you but not with me. If you want to see my cordless Dewalt shop vac out in the field, see: ruclips.net/video/EguYRi0MGPs/видео.html
2 Questions: Is it better to drain the battery then charge it? And does it harm the battery if you don’t fulling charge it?😇
The dead batteries I talk about in this video are already drained. and yes you should give it a full charge once you get them to take a charge.
talking about testing individual cells (and they are cells; you wouldn't call an individual cannon a battery would you?) a way to do this is to test their capacity with a known load. load = watts, time = time, convert time watts and voltage into amp hours if you like. the other way is to use a charger that keeps track of the amount of power you put in the cell. sure if you see 1.8v on a lithium cell it's damaged; but what about 2.9v? a low value high wattage resistor and a kitchen timer; and the ability to make a few data points will save you $$$ down the road.
If I go into a hardware store and ask the clerk where the cells are located in the store, I will get only a confused look in response. In the common vernacular they are called batteries, no matter the original etymology of the word.
I left it on like you told me, and it burned my house down! Why no disclaimer?! Just kidding. Thanks as always.
I'm trying not to tell people to do dangerous stuff - but you would be surprised by how many folks do the opposite of what I say in a video......
who dares to criticize prof chris !!! ill find you😂😂😂😂
thanks.
✌✌✌
Glad you enjoyed it.
You just picked the wors.....well You know
Um, you, well, I see.
DeWalt Lithium batteries are ALL bad. I have four. ALL FOUR failed within 2 years. AVOID THE BRAND.
I got lithium batteries that were not made by DeWalt.