Do higher C-rating batteries = lower internal resistance?

example: 

150C = less internal resistance?


I checked 90C and 120C

The ohm is almost the same

the IR tells you more about the health of the cells. lower = better. C-rating tells you about how much the battery can deliver. 1C = the amount of its own capacity to be delivered. i.e. a 5'000mAh battery with 10c can deliver 50A in theory. higher C also makes the battery heavier and more expensive

we can not do any interpretation for c-rating from mesured internal resistance.

i

The physical parameter C-rating is directly related to the cell's internal resistance. The C-rating given by the manufacturer has nothing to do with the physical parameter C-rating. This is true for approximately 15 years, before these years manufacturers used to state the true C-rating data. The physical value of the C-rating is no higher than 30C to 40C for cells produced by the current technology of mass production of LiPol cells, there are exceptions, but not mass production. Anything higher leads to a high voltage drop, overheating of the cells and their subsequent damage. Manufacturers lie, in an unreal way, they all lie.

I have never seen a difference in all my lipos for internal resistance regardless of C rating or voltage rating.  The only change in internal resistance is from use, abuse, or initial quality (cheap battery vs higher quality battery)

there is one brand doesnt lie, they doesnt write any c-rating on their packs; calls "noc" :-)
i believe they are decent quality but i didnt try one so far, i will if i see an offer local, just to honor that there isnt a rating xD

we should only look for brand and product reputation, the ratings doesnt help to choose, its a bad scam
it would be performance heaven if we get that written ratings :-)

(09-Feb-2024, 01:11 AM)hugnosed_bat Wrote: the ratings doesnt help to choose, its a bad scam

I can't agree with that statement. true that C on a battery probably always never gives you what they promise. true that some manufacturers are very very bad but not true that this does not help in selecting a battery. I've done numerous tests with various batteries from various manufacturers and there is a difference in the performance of these batteries especially towards the end of a flight! There is also a considerable weight difference. Hard to explain how two identical batteries with differenc C rating have a different weight if it's only a marketing scam... maybe the sticker on it?

there was another "rating" graphene, but in the end its no information at all.

the weight of a pack does determinate how good a pack -can- be, you wont get highest performance on a unusual light pack.

@parrouille swiss; you might missunderstand, if you buy two packs with 100c rating from different manufacturers, you will get two very different batteries and different performance.
if you look for quality packs like tattu and choose the high c-rated pack over the lower rated crating, you will get the better performing battery; but the numbers doesnt match in anyway the truth. c-rating isnt just fantasie rating in trouth it would or should describe the current it can handle over the whole capacity and the peakcurrent they can handle for seconds without much damage to the lipo chemistry.
we are in a very technical related hobby but with batteries we are dealing with totaly nonsense numbers.

as you are liion pilot, maybe you didnt explore the lipos peakperformance. the cratings would ibdicate to be able to stay on full throttle over the whole capacity without performance loss xD
the best 1500mah tattu pack is destroyed in one flight if you does draw the named current by its crating. if we would use them like the crating does indicate, we would get enter the dangerous side of lipos.
we could test that ratings easy on the bench or better outside xD
this is what i call a complete scam of declaration.

if we would choose by crating only, we would buy that worst lipos from china :-)
on liion its the same, there are many completly usless high c rated liion cells, but we can just use about 4 different liion batteries on the market which does fit the absolute minimum requirements.

Perhaps the internal components differentiate between them,

Swiss roll vs Layered

As in last clip by Chris