Thanks for the info! This shape of battery is known as the "Silver Fish" if you are looking at replacements.
On my rides I've been a lot heavier on the throttle than you, I think. On my 11 mile ride I had 3/5 bars remaining after the battery settled. I averaged 14-15mph on hills and 20 on the flats... I'm really looking forward to having two higher gears on the new freewheel to assist more.
For those who are new to ebikes, the power bars will drop when you apply throttle, even on a full charge. To gauge the remaining power, you have to let it settle and read it when the battery's at rest.
All of my wheel parts are supposed to arrive Thurs, hope to find the time to get it all installed quickly. I miss my evening rides.
here's the tires I ordered:
(Link Removed - No Longer Exists)
and the freewheel ($$$)
https://www.amazon.com/gp/product/B007A8RPUS/ref=s9_dcbhz_bw_g468_i4_sh