The more internal resistance in a battery the greater the voltage drops when the source starts drawing current until there's very little capacity to run the source even at a full charge. Usually as the battery wears out the internal resistance increases until the battery goes bad so it's good to see the ohms increase on the internal resistance output of the charger so you can take the battery out of service before it fails completely. In a regular Lipo that's healthy you can feel it wearing out with shorter run times. I use the IR when checking a battery that's fairly new and going bad to help with what to do with it. I have got a rash of bad Turnage Batteries.
Is there any way to revive of fix the battery when the IR goes up or do I just have to buy new ones?? I've got two 3s lipos 50c discharge and 5400mah but the IR is 6. 5. 16. and the battery's still have good power and acceleration what's the runtime is about 2 minutes but I don't want to throw this away and have to buy new ones I want to know if there's any way I can fix the ones I have
Internal resistance changes throughout a cells life. It also changes depending on the amount of charge the cells have. Often times when one cell is higher its because of age. The higher number could be indicating that the cell is on its downward slope in charge cycles. Remember that when discussing electricity we are forced to discribe it based on things we can measure. If we were talking about capacitors then the ultra low internal resistance would be parrallel with both its speed of discharge and recharge. Batteries are similar in this regard. The thing to remember is that Batteries make electricity. Capacitors hold electricity. Its easy to think of your lipo as a sponge that your filling up.. But that's not at all what's happening. When you charge a battery your forcing ions across the membrane to re-established a inbalance of + and - ions...Capacitors act like a sponge. The more tools u have at your disposal the better. I build electric bike batteries. IR is important when your matching cells to build large batteries. If your divice only uses 1 or 2 cells then I say use those cells until they are paper weights..
Unless I missed it, you NEVER answered the obvious question. What is too high of a spread once you’ve established a mark on my dipstick? I have a LiPo that measured around 5 m ohms pr cell when new, now 3 years later it measures 37 m ohms pr cell
A few years ago I ordered 5 identical lipo packs. NONE of them would perform! Turned out the IR was off the charts. Result? I never ordered that brand again (and it's a popular wide selling brand).
not sure if anyone cares but if you're bored like me during the covid times then you can stream all of the latest movies and series on InstaFlixxer. I've been watching with my brother for the last weeks :)
I have a Hitec x2Pro charger and I love it but it doesn't show the temperature as degrees f only C I don't have a computer to get online also do you know where I can get the Bluetooth module and 2 temp sensors
Tons of great information here I always thought that this measurement wasn’t really that useful I suppose if you use the same checker and do it at the same parameters on everything and you made a graph or wrote down the numbers when you got your battery brand new and watched it over it’s life it might be useful but as a shot in the dark running that taste really doesn’t tell you anything
Great vid guys I use a battery 4s 6000mah. 55C Now I bought a battery 4s 6000 mah 120C. What change will I feel ... by power ...driving time.. I charge regular ? Thanks
What are your thoughts about storing LiPO batteries in the refrigerator and or freezer if it's not being used for a long period of time. My thought is it would make the batteries last a little longer and slow down the chemical process and keep them from deteriorating faster. Do you think this is a good idea or not?
I have a 3 year old 3s lipo 50c dis and 5400mah and the IR it's showing is 5. 6. 16. And it charges fine and has good power and acceleration but the run time is about 2 minutes versus when the batteries are brand new 15 minutes please help is there anyway I can fix or revive these batteries
I have a masamps dual core 8000mah 150c 4s lipo. it has only 1 JST-XH balancing tap. If the two cores are in parallel how accurate are my voltage and internal resistance? Why do these manufactures not have more than one balancing tap for cell that are in parallel...
Thanks for the video! one question ...if i charge my glow ignitor in a hitec four charger in the nicd program ..could this melt a resistor in my intelegent charger?? and broke this chanel in the charger.?...
Hi Federico, not likely to hurt the charger assuming there were no active circuits in the glow ignitor. I'm not aware of any, but I also admit to only using a half dozen types over the years and they all were fine to charge with a glow adapter. If you were using the Hitec X4 series, they are fully capable of charging Nickel chemistry.
can anyone recommend a decent internal ac power supply rc battery charger with the capability of checking internal resistance of my LiPos....I also would like a recommendation on a simple battery resistance checker...thanks much
hitec is a cheap (junk) charger made by sky rc. I had some and once I went with a junsi Icharger the batteries lasted longer (total lifetime not run time) they had more punch to them, none of them puffed and and every cell in the pack balanced charged exactly the same. that was the worst part about the hitec, some cells would be off a whole half a volt of each other after a charge. so I wouldn't put too much faith into a hitec's readings. if you want a good charger go with junsi Icharger, graupner, maybe an orion, hyperion, revolectrix. if it's less than $250 it's not going to be that great of a charger. and one of the worst things you can do to a charger is run it off of a computer's power supply(servers too) in fact Junsi Icharger warns against using one and said it voids the warranty. you want a real power supply like the one in this video.
Lots of small talk. Jump to about 5:00 to start getting more info.
PAR FOR THE COURSE ON TH-cam, I don't know how "monetization" WORKS but this was supposed to be FUN, not all about friggin' MONEY!
What a good pair of fellows here with good ol fashioned clear explanations.
Great show and great conversations I learned a lot
The more internal resistance in a battery the greater the voltage drops when the source starts drawing current until there's very little capacity to run the source even at a full charge. Usually as the battery wears out the internal resistance increases until the battery goes bad so it's good to see the ohms increase on the internal resistance output of the charger so you can take the battery out of service before it fails completely. In a regular Lipo that's healthy you can feel it wearing out with shorter run times. I use the IR when checking a battery that's fairly new and going bad to help with what to do with it. I have got a rash of bad Turnage Batteries.
Is there any way to revive of fix the battery when the IR goes up or do I just have to buy new ones?? I've got two 3s lipos 50c discharge and 5400mah but the IR is 6. 5. 16. and the battery's still have good power and acceleration what's the runtime is about 2 minutes but I don't want to throw this away and have to buy new ones I want to know if there's any way I can fix the ones I have
Great idea, first battery you test is a puffed up Electrifly pack. Genius....
So the lower the IR is better?
Internal resistance changes throughout a cells life. It also changes depending on the amount of charge the cells have. Often times when one cell is higher its because of age. The higher number could be indicating that the cell is on its downward slope in charge cycles. Remember that when discussing electricity we are forced to discribe it based on things we can measure. If we were talking about capacitors then the ultra low internal resistance would be parrallel with both its speed of discharge and recharge. Batteries are similar in this regard. The thing to remember is that Batteries make electricity. Capacitors hold electricity. Its easy to think of your lipo as a sponge that your filling up.. But that's not at all what's happening. When you charge a battery your forcing ions across the membrane to re-established a inbalance of + and - ions...Capacitors act like a sponge. The more tools u have at your disposal the better. I build electric bike batteries. IR is important when your matching cells to build large batteries. If your divice only uses 1 or 2 cells then I say use those cells until they are paper weights..
Unless I missed it, you NEVER answered the obvious question. What is too high of a spread once you’ve established a mark on my dipstick?
I have a LiPo that measured around 5 m ohms pr cell when new, now 3 years later it measures 37 m ohms pr cell
A few years ago I ordered 5 identical lipo packs. NONE of them would perform! Turned out the IR was off the charts. Result? I never ordered that brand again (and it's a popular wide selling brand).
Actually useful. Thanks guys and keep up the good work
not sure if anyone cares but if you're bored like me during the covid times then you can stream all of the latest movies and series on InstaFlixxer. I've been watching with my brother for the last weeks :)
@Lennox Hunter yea, I have been watching on InstaFlixxer for months myself :)
@Lennox Hunter yea, been using instaflixxer for since december myself :D
@Lennox Hunter Definitely, have been using instaflixxer for years myself :)
Thanks for sharing this with us 👍
More confused now than I was before I watched this
I have a Hitec x2Pro charger and I love it but it doesn't show the temperature as degrees f only C I don't have a computer to get online also do you know where I can get the Bluetooth module and 2 temp sensors
Tons of great information here I always thought that this measurement wasn’t really that useful I suppose if you use the same checker and do it at the same parameters on everything and you made a graph or wrote down the numbers when you got your battery brand new and watched it over it’s life it might be useful but as a shot in the dark running that taste really doesn’t tell you anything
Great vid guys
I use a battery 4s 6000mah. 55C
Now I bought a battery 4s 6000 mah 120C.
What change will I feel ... by power ...driving time..
I charge regular ?
Thanks
I have 4s batteries that that are close on 3 cells (like around 8 or 9) and one cell is 14. Is that bad?
What are your thoughts about storing LiPO batteries in the refrigerator and or freezer if it's not being used for a long period of time. My thought is it would make the batteries last a little longer and slow down the chemical process and keep them from deteriorating faster. Do you think this is a good idea or not?
Probably not, given that the electrolyte may expand when frozen. Maybe fridge is fine.
I have a 3 year old 3s lipo 50c dis and 5400mah and the IR it's showing is 5. 6. 16. And it charges fine and has good power and acceleration but the run time is about 2 minutes versus when the batteries are brand new 15 minutes please help is there anyway I can fix or revive these batteries
I have a 4 cell with 28, 27, 28, 29. This is way higher than normal but it works fine. Advice?
I have a masamps dual core 8000mah 150c 4s lipo. it has only 1 JST-XH balancing tap. If the two cores are in parallel how accurate are my voltage and internal resistance? Why do these manufactures not have more than one balancing tap for cell that are in parallel...
Wow, that set is gorgeous, that's the first time I've seen it or the RCO site. Nicely done.
Thanks for the video! one question ...if i charge my glow ignitor in a hitec four charger in the nicd program ..could this melt a resistor in my intelegent charger?? and broke this chanel in the charger.?...
Hi Federico, not likely to hurt the charger assuming there were no active circuits in the glow ignitor. I'm not aware of any, but I also admit to only using a half dozen types over the years and they all were fine to charge with a glow adapter. If you were using the Hitec X4 series, they are fully capable of charging Nickel chemistry.
Taken with a grain of salt, lol! Cool video!
Whenever we make a video that gets technical, it feels like we're popping our heads up out of a foxhole on an active battlefield..lol. Thanks!
just checking 2 brand new gens ace 6s 60c 1250mah packs mili ohms are 5 6 6 6 6 6 Is that bad or good. just 4 or 5 flights with a sab goblin fire ball
can anyone recommend a decent internal ac power supply rc battery charger with the capability of checking internal resistance of my LiPos....I also would like a recommendation on a simple battery resistance checker...thanks much
iCharger does it all
But you need an external power supply sorry
Oh well that clears it all up not!!!
hitec is a cheap (junk) charger made by sky rc. I had some and once I went with a junsi Icharger the batteries lasted longer (total lifetime not run time) they had more punch to them, none of them puffed and and every cell in the pack balanced charged exactly the same. that was the worst part about the hitec, some cells would be off a whole half a volt of each other after a charge. so I wouldn't put too much faith into a hitec's readings. if you want a good charger go with junsi Icharger, graupner, maybe an orion, hyperion, revolectrix. if it's less than $250 it's not going to be that great of a charger. and one of the worst things you can do to a charger is run it off of a computer's power supply(servers too) in fact Junsi Icharger warns against using one and said it voids the warranty. you want a real power supply like the one in this video.
So defensive. You might as well just call your customers idiots.
So boring. Just cut to the chase.