EASYMOTION WIRELESS BLUETOOTH CONTROL

[John L]

Answered.

 

[Jack Tyler]

Well, an iPhone 5S battery is 6Wh, an iPhone 6S is 6,5Wh and 10Wh for the Plus model, and your higher end e-bike battery is typically 400-500Wh depending on the model.
The 6S 6,5Wh battery claims to last about 8 hours of average use, so lets halve that for your use, which means 4 hours on 6,5Wh = 1,625 Watts of draw. So your phone will drain your 400Wh e-bike battery at a rate of 1,625 Wh per hour.

Said differently: For a 400 Wh ebike battery, that means 1.5% of the *bike's battery capacity* would be consumed by the 6S if the bike powered the phone for that 4 hours (while the phone's battery would 'float' and remain at full capacity). So probably no meaningful reduction in range one would attempt, and arriving with a fully charged phone.

But the math aside, isn't the critical issue the fact that Easy Motion bikes don't make it easy to power accessories off the bike's battery? As this thread indicates, using small aux battery packs seem to be pretty common these days for a variety of reasons. That seems like an easy way to solve the problem, altho' it is another thing to charge at day's end.