this formular is generally used.
but the C-rating is no standard, so every company can define the C as they want.
You can expact to get better packs with less voltage sag with higher C-rating, but it´s not directly related to the max Amps continues.
You can ask @PatRocks , he´s checking different packs with a wayne giles meter. I don´t know the exact values of the results but in general it is more or better lets say less than the half of the amps you calculate with your formular.
the multistar packs for example rated as 12C but real world measurements more like 3-4C after your formular.
As far as I can say, the hobbyking graphens with 65C are very good and have a long charge cycle live too.
I drive E-MTB and use 60C const 120C peak packs and I´m happy with it.
If you have a street board I think 40-45C and 5-8Ah packs are a good value if you go in 1P config.
For sure you can take lower C-rated packs and put them in 2-5P what will add up in your max output amperage.
have a look on the heavy duty ones from hobby king.
they are 60C and you can get them for a good price.https://hobbyking.com/de_de/turnigy-battery-heavy-duty-5000mah-6s-60c-lipo-pack-xt-90.html
I use them and I´m happy so far, but don´t have much charge cycles yet on them.
So only time will tell how they hold up.
that´s the thing with lipos.
if pack double expensive but hold up 3 times as long in charge cycles, they in the long term more cheap.
out of a 12S1p pack of the above linked packs I get around 8-12km (depending on belt or chain and how hard i push them)
I would need a 12s3p with 30Q (only 9AH), 1233.58 = 128€ plus work and the rest of the materials, so let’s say 150€. This is 172€ and it’s ready to go and has a higher C rating.
sure - my comment was solely about him saying he will have 5500W continuous at his disposal with me assuming it was esk8 related. 5500W continuous for 2min: does that even count as continuous
Can’t be done in a full size helicopter due to various reasons (even remote controlled).
The main reason is that there is no material with a young’s modulus high enough to withstand the forces on the rotor and not bend to the point of hitting the boom.
Can you please calculate how long the battery would last if this was actually true?
