How to make Ebike Lithium ion battery pack in a proper way

How to make a lithium ion battery pack for electric bike in proper way
in this video I'm going to show you how you can make your Ebike battery pack
Contact us for Raw materials and complete battery pack.
Green Leaf Automation
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[@ljslimbilly]

do you sell online?

[@noone4515]

@supertech_7
Hello, I wanted to make a battery pack of 24 volt and 11 amp I managed some good batteries the old laptop ones, but problem is they are of diffrent capacity some are 2200 mah and 2000 mah. Want to make 7s Battery pack.
I have bought a bms also.
So it will be 5 cells in parallel to give around 11 amp and 3.7v
And then Will add these make 7 series to give around 24 volts
Overall= 24volts and 11ah
I wanted to know if there will be a problem in overcharging or discharging or the batteries , battery pack is to be used for powering a 250 watt motor, 23 volts.
Is ut safe to connect the 2ah and 2.2ah batteries in parallel for such use.
Thank you.

[@supertech_7]

Never use different capacity cells to make battery pack