Trekking aluminium ebike with 34Ah

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tumich   100 W

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Trekking aluminium ebike with 34Ah

Post by tumich » May 01 2015 6:27pm

This is one of my bikes. Nothing special :D


Image
Image

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.
Last edited by tumich on Feb 01 2018 2:54pm, edited 3 times in total.
My ebikes:
1. Sur ron
2. Treking bike with 250W PAS and 34Ah battery

Cheap, new, oryginal li-ion cells 18650 up to 3500mAh --> viewtopic.php?f=31&t=61608

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arkmundi   1 GW

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Re: Cheap trekking aluminium ebike with 34Ah

Post by arkmundi » May 01 2015 6:36pm

Looks like a nice bike. Don't know the brand Ruhrwerk. Where did you buy it? Low wattage, big battery, long-distance. Awesome!

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tumich   100 W

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Re: Cheap trekking aluminium ebike with 34Ah

Post by tumich » May 01 2015 6:52pm

arkmundi wrote: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.
My ebikes:
1. Sur ron
2. Treking bike with 250W PAS and 34Ah battery

Cheap, new, oryginal li-ion cells 18650 up to 3500mAh --> viewtopic.php?f=31&t=61608

dnmun   100 GW

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Re: Cheap trekking aluminium ebike with 34Ah

Post by dnmun » May 01 2015 9:11pm

34Ah is wrong.

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StudEbiker   1 MW

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Re: Cheap trekking aluminium ebike with 34Ah

Post by StudEbiker » May 01 2015 9:59pm

At 24v (7s), 34ah seem plausible to me. Why is it wrong?

dnmun   100 GW

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Re: Cheap trekking aluminium ebike with 34Ah

Post by dnmun » May 01 2015 10:51pm

ok, he has them reversed. i thought it was 12S7P. kinda just the opposite of what we usually see.

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dogman dan   100 GW

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Re: Cheap trekking aluminium ebike with 34Ah

Post by dogman dan » May 02 2015 7:56am

Even in 24v (7p), a pretty big battery though. 880 wh.

dnmun   100 GW

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Re: Cheap trekking aluminium ebike with 34Ah

Post by dnmun » May 02 2015 11:52am

lotta range too.

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Nobuo   10 kW

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Re: Cheap trekking aluminium ebike with 34Ah

Post by Nobuo » May 02 2015 3:35pm

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
* Lithium + Air = Fire * <-----> ** Lithium + Chemical-Additives + Air = ZERO Fire **
<Battery and EV works>
https://facebook.com/evmadrid1
<Battery building resources>
http://www.endless-sphere.com/forums/vi ... 14&t=68005

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tumich   100 W

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Re: Cheap trekking aluminium ebike with 34Ah

Post by tumich » May 02 2015 5:59pm

Nobuo wrote: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 ^^
Last edited by tumich on Feb 01 2018 2:55pm, edited 1 time in total.
My ebikes:
1. Sur ron
2. Treking bike with 250W PAS and 34Ah battery

Cheap, new, oryginal li-ion cells 18650 up to 3500mAh --> viewtopic.php?f=31&t=61608

bronz   100 mW

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Re: Cheap trekking aluminium ebike with 34Ah

Post by bronz » May 06 2015 8:52pm

tumich wrote:
Nobuo wrote: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:
Image
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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Nobuo   10 kW

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Re: Trekking aluminium ebike with 34Ah

Post by Nobuo » May 07 2015 2:33am

Thw whole forum what to know where he get those cells :mrgreen:
* Lithium + Air = Fire * <-----> ** Lithium + Chemical-Additives + Air = ZERO Fire **
<Battery and EV works>
https://facebook.com/evmadrid1
<Battery building resources>
http://www.endless-sphere.com/forums/vi ... 14&t=68005

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