So the battery reading on the C245 with the bafang battery and Vitus firmware is accurate and goes down to 0%.
Power was dropping off more noticeably / limited from about 8%.
Below 5% it limited to 320w. The last 5% was disproportional and went in 1km.
Was playing last night/this morning with bosch/brose/m510 comparisons :
View attachment 124213
Brose is a 1.3, so no voltage compensation and 840w peak power.
Bosch Gen 4 none smart - unknown peak power.
M510 FC2.0 - about 720w peak power.
Eco mode - the Brose is the strongest by default, then the M510 then the Bosch. I normally have my Brose one turned down from default.
All three feel punchy with a good power spread. The Brose is the quietest - almost silent in my case, but they vary and mine squeals when it's having a bad day (which it's done from new).
M510 was 100% charge the other two were at 80% charge. (The Bafang battery continues to increase in capacity with each charge).
EMTB mode on the Bosch still feels like the nicest all round mode for me, but then I've spent a lot of time using it and it's second nature knowing how it will react.
Climbing in Trail (Brose) T (M510) EMTB (Bosch) really depended on the hill. It wasn't as clear cut as I'd expected.
They all pull you in really strongly with the Brose and M510 performing similarly on a couple of climbs (Steeper) where the Bosch needed me to shift down one cog part way up as it was dropping out of the power.
On a different (faster) slope the Bosch pulled faster/harder than the other two with speed at the top being about 2km/h faster than the Brose and about 4km/h faster than the M510. The M510 felt like it started throttling back assistance part way up the climb. Need to test this further as I think it might be cadence related.
In Turbo (Brose) B (M510) and Turbo (Bosch) , the Brose pulled slightly harder and was faster than the other two. The M510 and the Bosch both pulled fairly similarly on the steeper climbs (though the E-mythique is easier to climb on than the Jam2 and I didn't use the Jam2's Switchgrade). On the faster climb, the Bosch wasn't any faster in Turbo than it had been in EMTB as EMTB had pretty much given full power when it was needed. The M510 was faster than trail, but still felt like it started throttling back part way through the climb.
So after that I went out and did some further testing on the M510. This is probably a known thing already and just me being unaware :
At 70% battery I was seeing peaks of 650-654w in "T" at medium to high cadence - which is pretty impressive and would mean it could be close to peaking similarly to EMTB mode in the right conditions.
When you hit a cadence of 122/123 (difficult to say exactly as the cadence display seems to have a tiny delay), call it 120 ! It completely cuts assistance.
Had to keep trying this and switching between watts and cadence to make sure it wasn't me imagining things !!
You only really get this on a climb where you're accelerating. The throttling I was feeling was the motor hitting that point, me not maintaining the cadence and dropping back into assistance, which just felt like a sudden drop in power but not a complete stop. It's a bit like an engine hitting the rev limiter.
It's not easy (as the assistance stops) but if you keep your cadence up when accelerating up hill, assistance drops to zero and stays there with the motor kicking back in when the cadence drops again.
The other anomaly today was the motor stopped assisting on a really really bumpy bit. The display stayed active so in theory not a battery issue. 10 seconds later it kicked back in again. If I had to guess it would be that the speed sensor got a false reading as it's spoke mounted and could have been "jiggling" around.
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