I’m still not sure what I want to do for a battery.
Lipo or Li-ion.
Li-ion seems to be a popular choice, but first I thought it would be out of my budget to go Li-ion.
Then I came across eskating.eu’s 10s3p battery with all the bells and whistles and I wonder how they get it so ‘cheap’, as far as my li-ion knowledge goes.
Original listing price seems to be 350 euro, but it dropped to 290 euro.
For which you get:
Integrated bms switch
Battery Percentage display
Charging port
2x 2.1A total USB PORT to charge smartphones
Built-in BMS 60A
XT90 connector
Voltage: 36volts (270 Wh)
Configuration: 10s3p – 18650
Autonomy: 7 500 mah (30-35km)
Charging time: aprox. 3-4 hours
100-240v 36v 2amp charger INCLUDED
Eskating.eu told me the bms is developed by themselves. So I don’t have any idea how this bms will perform, since I hear a lot of people talk about failing bms’s.
What do you think? What are your concerns? Is this a good deal?
Bare in mind that I’m from holland, meaning we call hills ‘mountains’
I would not go less than 4P on a Li-ion if you got some hills and like accelerating, the voltage sag will be to big.
If you are not going to start from standstill, go full throttle, or cruise around at very high speeds, 10S3P seems fine, and for 290€ it seems like a good deal.
If the battery pack is on 270Wh I would say you get about 18-23km (not 30-35km) depending on how you ride. I tend to use 15Wh/km to calculate since I got some hills.
I would like to have the board go from standstill.
In what context do you mean ‘go full throttle’?
And why would it not be possible to cruise at very high speeds?
I’m relatively new to battery technology i must say
Full throttle is when you push the throttle from remote to max. Honestly i wouldnt recommend you to to do a full throttle from standstill… the board will fly from under you… just go slow when starting till you find your sweet spot
Haha yes that’s what I thought.
Since holland is almost completely flat, a setup with 190kv motor 10s3p battery and 15/36 ratio should give decent torque?
or would a 170kv motor be a better option?
or lipo 10s1p battery for that matter?
it depends on how you are able to ride man! you can full throttle from standstill if you are able to stand up haha, just go a bit forward if you want to start like that.
Need practice
indeed needs practice. im telling as for somebody who had no experience on an eboard so far i saw a few friends who are good at skateboarding falling back because they full throttled :))
190kv is great for speed and tourque in my opinion, and you don’t go over the 60keRMP on the vesc on that setup. If this is your first build you will be happy with a 10S3P for 290€.
Of course you can hit full throttle from standstill and maybe just fly off the board. What I mean is that in order to not stress the batteries too much I would suggest going for at least 10S4P if you want to keep your batteries healthy for a long time. I am not saying your batteries will die after 6 months, I am just saying going 4P or more puts less stress on the batteries when accelerating hard or breaking really hard.
I went for a 6S1P (Lipo 25C) on my first build and pushing the batteries to the max. It worked out but I can’t way I would be safe riding with those batteries again after 4 months of riding.
you should say 2p it’s not good for hills then it will be a big sag voltage for real!
I have found a list of these hills and none of them are nowhere near where I live