Charging the battery. Can I modify?
Ok, the scooter came with 2 batteries wired in series. ( 12V 10AH ) This is what the charger is set up to recharge. I happen to come across another set of batteries ( same exact wiring - 12V 10 AH in series )
So, my question is can I alligator clip this new set of batteries to the pos and neg on the connector as the original battery is being recharged?? So long as its in parallel, its not a problem?
It will just take a lot longer to recharge, correct?
Correct. You will get more than twice the range due to the beneficial side of the Peukert effect (as long as hou don't change your acceleration style).
To equalize the micro-resistance difference between the two charge strings, I would attach the pos lead of the charger to the original pack pos terminal and the negative charger lead to the supplemental pack neg terminal.
I don't know if it really makes any difference, but I've tried to follow this pattern with parallel charging.