Reducing Internal Resistance On Older Lipo's
#1
Reducing Internal Resistance On Older Lipo's
Is there any way to reduce the internal resistance on a pack of lipo cells?
A couple of mine have shot up resistance wise and was wondering if there was any way back for them?
Thanks
Skiddins
A couple of mine have shot up resistance wise and was wondering if there was any way back for them?
Thanks
Skiddins
#3
Tech Addict
Find out the Internal resistance of each cell
Yes, open them up and wire in a resistor (parallel) the of the same resistance across each cell
You have now halved the batts total internal resistance
If you actually try this, sell all your RC gear and get a car that you pull along with a length of string.
OK, sensible answer.
Open up the batt pack & remove all the cells. Buy a new high C softpack & put those cells in the hardcase
If you actually try this, sell all your RC gear and......
#4
The IR of a lipo cell is determined by the chemistry and materials used in its manufacture and will change through the life of the cell because of degradation of same said chemicals and materials.
There is nothing you can do at all to change this, other than buy a new pack. If you packs have desegregated sufficiently, buy news ones and make these your practice packs.
There is nothing you can do at all to change this, other than buy a new pack. If you packs have desegregated sufficiently, buy news ones and make these your practice packs.
#5
is there a way to put back the flavour in a chewing gum? In all honesty, I would really like to know
#6
Nice to see the asylum has let so many of you out today.
Thanks RogerDaShrubber
Thanks RogerDaShrubber
#7
#9
I hear driving a nail through them is the "hot" ticket.
Sean
Sean
#11
Tech Elite
iTrader: (34)
Yes !!!
Find out the Internal resistance of each cell
Yes, open them up and wire in a resistor (parallel) the of the same resistance across each cell
You have now halved the batts total internal resistance
If you actually try this, sell all your RC gear and get a car that you pull along with a length of string.
OK, sensible answer.
Open up the batt pack & remove all the cells. Buy a new high C softpack & put those cells in the hardcase
If you actually try this, sell all your RC gear and......
Find out the Internal resistance of each cell
Yes, open them up and wire in a resistor (parallel) the of the same resistance across each cell
You have now halved the batts total internal resistance
If you actually try this, sell all your RC gear and get a car that you pull along with a length of string.
OK, sensible answer.
Open up the batt pack & remove all the cells. Buy a new high C softpack & put those cells in the hardcase
If you actually try this, sell all your RC gear and......
#12
Tech Addict
iTrader: (38)
Not sure if it's possible but these info might help on how to, at least, extend their peak life cycle.
http://www.gibbsguides.com/lipoguide.htm
http://www.mpoweruk.com/testing.htm
http://data.energizer.com/PDFs/BatteryIR.pdf
http://www.slkelectronics.com/ecalc/lithium.htm
On the last two links, it is discussed how temperature affects the internal resistance of both Alkaline and Lipo bateries. Based on
the information, the internal resistance of a Lipo batt DECREASES as the battery gets hotter.
So, the answer is take your wife's or girlfriend's hair blower and take it to the races with you and heat those suckers before charging! (just kidding!)
http://www.gibbsguides.com/lipoguide.htm
http://www.mpoweruk.com/testing.htm
http://data.energizer.com/PDFs/BatteryIR.pdf
http://www.slkelectronics.com/ecalc/lithium.htm
On the last two links, it is discussed how temperature affects the internal resistance of both Alkaline and Lipo bateries. Based on
the information, the internal resistance of a Lipo batt DECREASES as the battery gets hotter.
So, the answer is take your wife's or girlfriend's hair blower and take it to the races with you and heat those suckers before charging! (just kidding!)