Which battery do I get?

[Deleted member 4366]

12AH 30Q cells is the lightest battery. It can give all the current you need. you should get a range of between 20 and 50 miles depending on how much power you use.

 

[Jonah]

Thanks both. I want maximum range for a long trip. I’m planning on doing LEJOG so some days of 90 miles. Plan to use the Xiongda YTW-06 with max 13a controller so not huge power draw. Also want to keep weight to minimum. Thinking of 10SP5 - 17.2ah pack from ENERpower.

 

[Nealh]

90 miles will still be a tall order from 17.2 ah on a normal bike unless you can do a lot of unpowered riding on flat routes or use very low assist quite a bit.
I managed 93 miles with a 15a controller but had 24ah of cheap Samsung cells, at the time the cells were brand new.

I have an inkling to try the 35E but it would be in 6 or 7P configuration as a soft cell build.

 

[Jonah]

I hope to do as much unpowered as possible, only using assist on the hills.

 

[anotherkiwi]

https://www.nkon.nl/rechargeable/other/sanyo-ncr20700b-lithium-battery.html

When I get a spot welder I will make a couple of 3P12S batteries from those and use either 1 on the upright or 2 in parallel on the trike so either 12.15 Ah or 24.3 Ah @ 44.4v. Equivalent to 70 to 143 km range locally at today's strength levels and about 185 km on the flat.

 

[Jonah]

Sounds good. I’m sure that 20700 or 21700 cells will soon be the go to cells of choice from what I’ve been reading.

 

[anotherkiwi]

I calculated that they are only 2€ more than the 30Q for more than a third more Ah so money wise they make sense.

 

[Nealh]

They are looking like a good option less cells = less weight even though a cell is a bit heavier. Less cells for more ah and a smaller pack as well. Mooch at e- cigs rates them as 16a cell.