EDIT: this topic used to be about above mentioned li-ion battery but turned into a discussion/advise topic about what a high c-rating automatically means a good quality battery. And wether or not to invest in a higher c-rated one.
The best solution in this case with those two choices is to use the lipo batteries. I really can’t see the 10s2p pack performing well at all. They give you the c rating as well. 4.4ah x 5c is 22amps continuous. This will lead to huge voltage sag and poor performance as well as decreased range. Everything will get hot and struggle to move you along. The lipos are more or less 225amp constant. Even with less volts the lipos will outshine the 10s2p pack.
Is there a ceiling to the discharge rate with lipos? For example 35c is the most cost/performance effective. Buying a battery with higher discharge rate is a waste of money?
Does the c-rating somewhat resemble quality of a battery? So buying a high c-rated battery could mean longer lifespan and less prone to dead cells? I understand that a c-rating of 35 will get less warm than a 25 rated battery.
There isn’t really a way to calculate the sag because of all the variables like components used like wheel size, gearing and others like your weight, uphill/downhill and terrain. I think you could try and estimate it through the advice of others who have experienced it. Or possibly distance travelled until low voltage cutoff to find the watt hours per kilometre or mile. I’ve used nanotechs for many years and they have proven to me at least to be one of the better lipo cells. 35-70c would be my choice as well. Zippy’s are ok too. I have been eyeing up the 4s 8000’s for some time.
At the moment I’m not using lipos for either of my rides.
I would say 30c as a safe minimum and anything above that. I would think that higher c rating should give better efficiency and provide longer range with less sag.
Looks like the burst is only 33% the continuous discharge is. I thought bursts were almost always twice the continuous rate? "30C Constant / 40C Burst"
I would say 30c as a safe minimum and anything above that. I would think that higher c rating should give better efficiency and provide longer range with less sag.
Thank you for helping me out. I think I’ll go for the 45-90c turnigy nano tech since the cost per battery is only 3 euros higher than the 35-70c version!
Would you recommend this?
I should have said those are sweet based on what I am reading. I haven’t tried them yet.
Application is everything
My turnigy Nanotech 5s 5000mah 65-130c batteries give me different performance for the different things I use them for.
In my 43" Aeromarine Challenger Boat I use 2 x 5s in series and get 4 minutes of runtime. The boat pulls over 7000 watts.
In my RC monster truck using one 5s I get 15+ minutes of runtime using a neu motor 1515 1yf
For my electric skateboard 2x 5s in series 230kv 16/36 83mm wheels and me weighing at 216lb I get 45-60min of runtime or 16kms/10miles whichever come first. Depends on terrain.
20+ mph is very fast on a skateboard. Some people love the thrill. I have tried to keep mine in and around 20mph max. Never really cruise that fast. You can always increase your speed by going up a tooth on the motor pulley to 16 later on.
Check out this thread for using a BMS with Lipos. Namasaki is the man for tips on installing those.
I think I won’t even be able to go faster than 20 mph since I plan on using it through the city most of the time.
Also esk8s aren’t exactly legal in Holland. But from what I understand the cops won’t make a big deal about it as long as you ride safely.
If there was a 4s 8000mah 40c battery I would be all happy
Found that thread already but thanks for reassurance!