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I wouldn't have said I've gone on a massive shopping spree, mainly just consumables. The bike seems to go through parts rather quickly, and things like chains / tyres / cassettes won't go off if I buy them when I see a good deal I have upgraded the saddle though and changed the front brake to...

I also have a theory that charging the batteries when cold, such as outside in the garage, has a significant impact on the usable capacity. I'm running the test at the moment.

Thanks. That may explain why yours readings are slightly higher than mine as thats an older charger and so probably less efficient. I ran the test with both the E6002 (1.8A) and E6004 (newer 4A charger) and got readings 5wh apart which is good. Again, it's all relative so only way to tell is...

Interesting. What charger were you using? Seems to have been quite a fast charge at just over 3.5hrs? Just done the test with the brand new battery and measured 516wh, so lower than I would have thought still. I have been assuming 5% loss from the charger and 5% from the battery, but no way to...

About the only bit of dry longleat forest I could find! About 1deg out and just missed the snow at the end. Had to hose myself down at the end though!

As above, with a mains power meter. It's not a great measure as there are losses in the charger and in the battery itself, so the power the battery takes will always be less than that measured as going into the charger. So for a 504wh battery, the power in should be above the battery capacity...

Ah, yes. My bad! Edited to correct. Weather was rubish today so havent had the chance to empty the new battery yet to compare. I did repeat the test with the 82% battery though and got within a few wh, which shows the measurement is consistent which is good.

And to you all! Santa should be bringing me a spare battery tomorrow, so looking forward to that. Weather looks nice too, so may have to have a quick test in the morning...

Just done a charge from flat and its taken a total of 470wh of electricity. As that also includes loss of the charger and battery itself, its a long way short of the 504wh it should be! Even with the battery reporting 82%, thats still short, so likely the problem is worse than first thought...

Thanks. Not too bad then. Most of my projects end up rather more expensive than anticipated... Thats some expensive paint! Worth it though. Looks ace.

Just hit 40 cycles today with the E8035, and has now dropped to 82% remaining battery health. Eco reserve lasted for a while 2s when the battery died. Not very impressed! I'm going to keep going with this battery for a while I think just out of curiosity before doing a warranty claim. Santa...

Have to say that looks very nice! I'm hoping it rides well as I may have to make an investment if so!

Has anyone tried the dirt cheap ebay cassettes? Sunrace I think? Gut feeling is they would be fine as just machined steel, but still spent the extra few quid on shimano.

Do you need a primer, or can you put the base coat straight on? I've painted a few cars, and it's all about the prep work. Every time I've thought 'that'll be OK, you wont notice' I've ended up having to re-do it later!

Do they both show the same number of discharge cycles? That could show if weight was a factor as there would be more cycles on one than the other if more power was being used due to increased weight.

Just a quick note to say thanks for organising! It was also fun to see what crazy distances people got in each week. Not sure I have the time to match it unfortunatley.

I would agree it seems to be the case, but would be good to confirm. Mainly for the E8035 battery where they all seem to show exactly the same pattern, which points to it being possible that its firmware. The external batteries seem so show different rates of degradation which would be more in...

Somthing I'm planning to test out. I've got a new battery on order so will test the capacity difference between that and my old one by measuring the power required to charge from flat. It should at least give an indication if the reported degradation is real or not.

Are the external batteries housed in plastic? The internal ones are ali, so will have a good heatsink even though in the frame. I've also not noticed the battery being hot after a ride. Doesn't mean it's not an issue though.

Are they the same battery? All the E8035 batteries on here have shown exactly the same pattern.