Bearings are fine, recently mounted a burris treaded tire and inspected bearings. Smooth as butter.
BMS was not effected by the upgrade, my board is a 4208
A month in now and 250 miles on the new pac. Milage has gained a little to 16.5 miles from full charge. The part Im stoked about is i can run all the way down to 5% before I start to feel the power fall off. I now normally take it to between 1-2% before I call it a ride! It took a little while for the pac to neutralize and become stable. Once that happened, I could not be more pleased! If your ready for a new pac, Certainly look into the Chi Battery! Witz Wheel stocks them. ( witz makes sure your satisfied! That counts in my book) Higher in the price range, but you do get what you paid for!
So, I did my research and purchased the Chi battery thru Witz Wheel. ( Sony VTC6 cells) Paid a premium, but to me its worth supporting the small shop, as I run a small machine shop myself, and fully know the importance of supporting grass roots! ( Witz service was Excellent!)
The smooth power delivery is really good! Changed the response completely. And power stayed steady all the way until about 15-20% If im to look for a downside? It would be the promised range extension? That didnt happen. About the same as the oem battery, maybe slightly less? The win is in the power delivery! I have 4 rides now on the new pack. Taking it down to about 8% every ride. Overall, Im happy with my decision to go with the Chi battery pack.
XR Replacement Battery Options?
I have a 4208 XR that the battery is about done.
Looking at replacement options? There is an up grade options that I found from two vendors using the Sony VTC6 cells, or the std FM replacement battery. The two vendors are showing a $180 difference between the Two for basically the same pack? Who has actual experience and Can give an honest review?? Thanks