Trekking aluminium ebike with 34Ah

tumich

100 W
Joined
May 28, 2014
Messages
218
Location
EU
This is one of my bikes. Nothing special :D


IMG201504_wwxwesw.jpg

IMG201504_wwxwesx.jpg


Regular battery had ~10Ah but bike was bought in store without due to factory defect very cheap.
Motor 250W/24V 8FUN + PAS. Speed up to 25km/h.
After changed power supply now have 34,2Ah (84 cells LG 2850mAh/each capacity - config 7S12P). I upped the carrier throw distance bolt.
Cells are mounted vertically in holders very tightly, together with BMS. Discharge current are very low, because of amount of cells under 1A per cell.
On a one charge I can do distance up to 110-120km (not fully discharge) on full power mode. On eco mode ~180-210km.
 
arkmundi said:
Looks like a nice bike. Don't know the brand Ruhrwerk. Where did you buy it? Low wattage, big battery, long-distance. Awesome!

It's German brand. Very durable in that price. It's rare with motor 24V, all other (the same brand) had 36V. On Ebay.de You can find some offers.
 
Even in 24v (7p), a pretty big battery though. 880 wh.
 
Amazing job, I just was waiting impatiently for a tumich build! :D

it is a insane range for such compact battery.

did you used the 40 cells bosch holders?

How much weight stand you rear rack?

Thanks for sharing
 
Nobuo said:
Amazing job, I just was waiting impatiently for a tumich build! :D

it is a insane range for such compact battery.

did you used the 40 cells bosch holders?

How much weight stand you rear rack?

Thanks for sharing

Thanks :)
84 cells *45g=3,78kg
BMS +fuse is lightweight like air ^^
 
tumich said:
Nobuo said:
Amazing job, I just was waiting impatiently for a tumich build! :D

it is a insane range for such compact battery.

did you used the 40 cells bosch holders?

How much weight stand you rear rack?

Thanks for sharing

Thanks :)
84 cells *45g=3,78kg
BMS +fuse is lightweight like air ^^
I used 10 cells holders like this:
IMG_20150211_194841_zpsp2sq58ac.jpg

Hey, can you tell me more? Where'd you get the cells? How much did you snag them for? What about the holders, did they come with the cells? Really great job by the way.
 
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