I stripped down the bike and pulled out all the old GBS cells. I could see the bad one looking slightly puffy.
It was kinda interesting to compare the old and the new as 3kWh for 3kWh. The difference in volume and weight being pretty apparent! The GBS in total were 100lbs, but as 3kWh would be 80lbs. In comparison the Volt module is 60lbs.
I am hoping that the realistic range of the scooter remains the same as even though on paper the 3.8kWh of the GBS is higher. I think there is this potential for several reasons.
1. The additional 40lbs in weight the scooter has to lug up hills with the GBS battery burning additional energy.
2. The higher efficiency losses of the GBS batteries through higher internal resistance. I noticed a 24% loss comparing the Cycle Analyst and the Kill-a-Watt for energy used. I gather when the scooter is run harder the worse this is?
3. Usable range from a charge. Because there is a bit a variability between the GBS cells, the range is dictated by the weakest cell. With the Volt module there will be far less variability so the usable range should be relatively better!