2 11.1v 2.2ah for $31 total. 4 of these would give you a 44.4v 4.4ah pk for $62...that's cheeep!
A bit messy but cheap. It's my understanding the bigger pks are more expensive but better because they're safer? I mean the more batteries you wire together the harder it is to charge right? Still new ground to me, but I'm consumed by the need for power and speed! I want a scooter I'm afraid to ride not 1 I wish would do more!