Since BionX has no way of extending the battery without voiding the warranty. I set up a 10Amp 12V NIMH battery connected to an DC/AC 400MA converter. I then plug in the BionX charger to the BionX battery. Please see attached.
I was able to charge the BionX battery with this configuration when not riding. I was was wondering if any one had any ideas if this would work while I am riding and using the BionX assist. Since my cfoomute is 12 miles each way on New York City streets. It takes me around 75 to 90 minutes depending on lights and traffic. If it does work maybe I could get a 25 to 35% in battery life.
This is a very cheap alternative. since the battery cost 125 dollars and DC/AC converter cost 30 dollars.
On a side note. I carry this battery to heat my Gerbing heated gloves and heated shoe inserts.