To test however I ordered a used DC board from an old macbook. Will let you know how it turns out. Cable part will be from a broken charger I have sitting in a drawer.
You can’t use it for 8-10 Amps - what kind of charger delivers that at 40V anyway?
2A should be fine since you can split it into using two pins (so 1A each). The Apple charger delivers 4A at 20V to fulfill the 80W rating - so the connector must be able to handle at least that.
You could also just make your own , with a little more spacing between poles… like 10mm in groups of two… then you dont need to think of water shorting the poles
I am not going to ride this in the rain. Sure you could make your own magnetic connector - but that is a lot of work and seems unnecessarily complex when you can use already existing parts. No reason to reinvent the wheel.
@flatsp0t could you link me to such a charger? I have never actually seen one.
At 40V you should not see a spark since there are no capacitors between the charger and the battery. So I think it should be fine. It is not like when you connect the VESC to the battery and the capacitors charge themselves.
no - I am not going to use a BMS. With quality cells balancing is unnecessary and can be done occasionally (like once a year or something). Look at @whitepony’s builds!
There should be a spark aswell there… since a battery is also a capacitor… but the ISR is higher in them compared to capacitors… so you may be right about the sparks
30V can be delivered (the max of my lab power supply) but the connector gets quite warm (I guess the controller chip is not designed for this type of voltage). Will see how it looks with 41V when my DROK charger is ready. Thickness of the female part (without the unnecessary PCB) is 7mm - so really nice for thin boards as all other plugs usually require much more space. The pins are even angled at 90° already