I have a setup where I am connecting three 6S lipo batteries in parallel. These are my old helicopter batteries, I'm using them to power a scooter (500watt electric motor). So far I've done a three, four and five mile trip with no issues. The batteries are barely warm to the touch after riding. I am using low voltage alarms plugged into each balance connector to prevent damaging the batteries. While riding, the lipos are in a protection bag in the old sealed lead acid battery compartment.
My actual question is a general lipo battery question. I saw a setup where a guy was charging in parallel, only connecting one balance connector. It looked like custom wiring so I'm not sure if I'm seeing things clearly.
It's a forum from 2014; i'm not allowed to post a link.
Does this mean that I only need to connect one low voltage alarm to one battery? Or should the balance ports be connected in parallel (like a standard parallel charging board).
The posts in the 2014 forum seem to be suggesting that the balance ports don't need to be connected in parallel (however they are referring to charging).
I hope this makes sense. I'd appreciate any thoughts.

Something like this may help you. Just as long youe charger can handle it on mah.

+1 on using a parallel board, if you hook all the packs into the parallel board and use that in your scooter, then you can hook up a single LVA into the parallel board, otherwise you would need a separate LVA for each individual pack as you can't guarantee which cell may dump on you without hooking up the balance leads in parallel

Thank you both