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Not sure..... I have followed the 1-1 principle , ( 6000 mah at 6 amps for example) without problemsFOR EXMPLE- CHARGING A 4S BATTERY 6000MAH AT 3 AMPS INSTEAD OF 6 AMPS? THANKS!
Speak for yourself @jkflow my drive style should handle me for 10 years.Yes, it will prolong life, maybe by 5-10% in a nice clean world with controlled charge/discharge. Instead of 7 years, you could get maybe 8 years out of it.
The RC world is not anything like that, you will lose your lipos for other reasons within 2-3 yeas, if you are bashing.
In other words, there is no practical value, in the RC world, to 'slow charge'.
The above regarding "reducing depth of discharge" and "reducing discharge rate", would only apply to Battery chemistries other than Lipo. Like Nim and Nicad packs.Yes, typically charging at a lower C rate is best for the battery and will extend its life among other things (reducing the depth of discharge, and reducing discharge C rate). I typically charge between .5 and 1C and never outside the allowance of the MFG.
I read some good literature on this a while back, I will try to find it.
EDIT (Check out "TOP TIP 4"): https://www.saftbatteries.com/energ...m-ion-batteries-5-expert-tips-longer-lifespan
How do you know when a lipo is ready for retirement?I find that most of my lipos in general are only good for 50+ cycles give or take before the get tired. Yet it is claimed they can charge over 200 cycles.
RC lipo's go through a lot of abuse to begin with.
It kind of depends on what you use them for (bashing v. high performance). But generally speaking, a lipo has a good bit of wear when the IR of each cell reaches around 10mΩ and are ready to be relegated to the back burner when they reach 20mΩ. At 30mΩ it's probably time for the great battery park in the sky.How do you know when a lipo is ready for retirement?
When measuring IR it's important that the packs are at as close to the same temperature as you can manage every time you do it. Every degree counts and will make a difference in what you measure as IR is very sensitive to temperature.I retire mine when they struggle to balance, the cells are way off from each other after a run, the capacity drops too low, or physical damage is present.
My charger does read internal resistance but it is not always accurate, regardless, I like to document initial readings. Different brands have slightly different values, I had a pack start at over 10mΩ new, ideally you are looking for the rate of change over time.
That is a good point.When measuring IR it's important that the packs are at as close to the same temperature as you can manage every time you do it. Every degree counts and will make a difference in what you measure as IR is very sensitive to temperature.
I'm using an ISDT P20.That is a good point.
I just chalked it up to the difficulty in reading crazy low values. If I jiggle the balance lead I get different values everytime.
Or maybe it's just the Hobbymate D6 Duo struggles with the reading. Not sure, but I have heard from others the same issues (inconsistent readings).
What charging are you using?
Resting voltage when fully charged will fall off more quickly , after a full charge.How do you know when a lipo is ready for retirement?
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