Three Bears on the Mountain Ebike
It has been a few days since I rode the ebike since I have been testing an electric Ford Focus, and the weather has been perfect for ebike riding.
So I needed a fix today, and I pulled out this Novara and took it for a run around the 3 Bears Loop.
The batteries were down about 20% from just sitting, possibly clear from November. They were still nicely balanced, but I gave them a balance charge with the Cellpro.
This bike has an 18S Lipo 10AH pack on it, and the loop is about 23 miles inclusive from my house. So I was watching for less than 0.5 amp hours per mile to make the trip. Some time back I was having a problem with this Cycle Analyst, and the readings were all over the map on current at times. Justin recommended a bypass capacitor be added which I did, and since then the readings shifted considerably but I have not recalibrated the CA.
So, according to the amp hour reading I was going to run out of juice, but according to the voltage it didn't look nearly as bad. So I took it easy and pedaled more, and got home with about 68 volts on the pack, far above the 63 or so volt cutoff. But the integrated current reading is almost 12 amp hours, and the pack is only rated for 10, so I had some range anxiety. However the voltage looked fine so I didn't worry about it much.
Now that I'm recharging with the Cellpro I can see what was actually used. On the first bank it indicated 6.008 amp hours put back in. So the shunt value is off nearly by a factor of 2.