1 kWh LiPo club, who's in?

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stewrobb   1 W

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Re: 1 kWh LiPo club, who's in?

Post by stewrobb » Jan 11 2012 5:31pm

Gio 500+ Shitbucket - 20s3p Turnigy 4s Hardcase 5Ah Packs (x15) - 1.11KWh
Gio 500+ scooter - @72v 50A X8M06 Greentime Controller
Delta/Wye - Regen - 20s3p 20c Turnigy hardcase
- Drove until the end, bent frame retired it

Current Build:
Ironhorse Hardtail frame, 120mm Suspension
Front Hayes Hydro Disc, Rear cable Disc
18 FET 4110 60A (for now) Controller
1000w Rear Motor - 420rpm@48v
20s3p Turnigy 5Ah

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Deutch420   100 W

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Re: 1 kWh LiPo club, who's in?

Post by Deutch420 » Jan 11 2012 5:36pm

24s4p here. 6 groups of 4x 4s hardcase packs.
GM Rear, Drill mod. 12FET Lyen @ 45A, 24s2p 100v 10ah LiPo. 1999 Mongoose = 49MPH.
Crystalyte 5304 rear 18FET lyen @ 80amps, 24s4p 100v 20ah LiPo. Kona Dawg = 52mph
Crystalyte 5403 rear 18FET Lyen @ 80amps, 24s4p 100v 20ah LiPo. Phasor frame = 58mph 100%, 62mph 120%

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neptronix   100 GW

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Re: 1 kWh LiPo club, who's in?

Post by neptronix » Jan 11 2012 5:38pm

c_a wrote:pocket: 12s4p of 3.7V/4.9Ah = 870.24Wh
enduro: 24s9p of 3.7V/5.35Ah = 4.27kWh (not mine)
epo-bike 2012: 24s11p of 3.7/5.35Ah = 5.225kWh

total: 10.365kWh
You're actually being conservative with your volts there. hobbyking is tested to be approx. 3.8v nominal.
Um, anyways you win. There is a club for you and you're the founding father of it.
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sangesf   10 kW

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Re: 1 kWh LiPo club, who's in?

Post by sangesf » Jan 11 2012 5:43pm

36v 60Ah TSs and 36v 10Ah duct tape pack for a total of..
2772Wh.
But normally just the TSs for 2.16Kwh.

c_a   100 W

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Re: 1 kWh LiPo club, who's in?

Post by c_a » Jan 11 2012 5:55pm

neptronix wrote:You're actually being conservative with your volts there. hobbyking is tested to be approx. 3.8v nominal.
Um, anyways you win. There is a club for you and you're the founding father of it.
The real average depends to the load, at 1C 3.8V is possible.

Here you see a logfile from the race in magny cours, channel 4 and 5 are 0.2v lower because there was to much emf from the motor in to the measuring wires, with my load average is near to 3.65V

Image

anyway, I think that there are some guys which have more capacity :mrgreen:

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neptronix   100 GW

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Re: 1 kWh LiPo club, who's in?

Post by neptronix » Jan 11 2012 6:06pm

Woah, that is some major, major sag dude. You definitely need more amp hours on that thing, or some higher C cells. 0.5V sag per cell has got to get those packs really hot & you're losing a ton of watt hours..

Admittedly, i run high amp hours & low amp rates usually. 36A peak on a 10S 20C 20AH pack produces an entire 0.75V of sag across the pack, or 0.075v of sag per cell. That's how i get my 3.85v nominal voltage.

I agree that the nominal voltage depends on load. But 1C-2C loads will produce a ~3.85v/cell nominal voltage.. 10-20C will produce something more like 3.6-3.5v nominal voltage.. maybe that is why turnigy rates them at 3.7v/cell.

But do you rate how many kilowatt hours you have based on how much you sag, or do you rate them based on a standard 1-2C load, then talk about how much energy is wasted after the fact?

I'm not sure what the industry standard way of doing this is...
"Love and compassion are necessities, not luxuries. Without them, humanity cannot survive." - Dalai Lama

My first major build: 1.6kW 8T MAC motor on a Trek 4500 MTB.
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c_a   100 W

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Re: 1 kWh LiPo club, who's in?

Post by c_a » Jan 11 2012 6:14pm

The peak load was 360-380Amps out of a 49Ah pack or nearly 8C.

I think the cells where really stable and I got a lot of kwh out of the 5kWh pack and the temperature was not over 38°C.

In my opinion they make a great job, because they are light and rated at 18C only.

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neptronix   100 GW

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Re: 1 kWh LiPo club, who's in?

Post by neptronix » Jan 11 2012 6:24pm

Ah, that makes sense.

38c is not all that bad if you measured the outside cells. But next time you take it out and romp on it, measure the cell in the middle of each pack. Those heat up more than the ones on the outside of the pack since they have far less cooling surface.

This is why large format lipo cells are not common - can't really push the cells in the middle too hard, they overheat, puff, and go first unless the whole pack is used at a very moderate C rate ( around 1/4th ) relative to it's max C. The larger the prismatic cell, the more you have to derate it, unless you are somehow throwing an air gap between.. then you basically end up getting closer to the volumetric density that cylindrical cells have.. and that sucks.

I really think a lot of these lithium cells are overrated.. over a thousand cycles at 1C or under.. how many cycles at 50% - 100% of the C rate? Bet you'll never see that advertised ;)

Sorry to go off topic.. back to beating our chests about how much lipo we have :lol:
"Love and compassion are necessities, not luxuries. Without them, humanity cannot survive." - Dalai Lama

My first major build: 1.6kW 8T MAC motor on a Trek 4500 MTB.
Monster MTB: Leafmotor 1500w @ 4kW on a Turner O2 full suspension.
The monster scooter: Heavy duty Cannondale semi recumbent - under construction.
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c_a   100 W

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Re: 1 kWh LiPo club, who's in?

Post by c_a » Jan 11 2012 6:35pm

In the specsheet the cells are rated with 50cycles at 18C/1C

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Re: 1 kWh LiPo club, who's in?

Post by Tench » Jan 11 2012 6:54pm

6 x 6S 8000mah turnigy bricks (and they are like bricks!!) connected as 18s2p, which in my book is very close to 1.1KWH :lol:
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Re: 1 kWh LiPo club, who's in?

Post by Doctorbass » Jan 11 2012 8:59pm

Total Li battery:

24s 24Ah Konion MAkita: _2131 Wh
30s 15Ah Zippy packs:____1665 Wh
28s 9.2Ah A123 pack: ____850Wh
16s 15Ah Ping pack: ______768Wh
16s 10Ah Headway: _______516Wh
16s 10Ah Headway: _______516Wh
10s 10Ah Konion Makita:___384Wh
40s 1Ah A123: ___________128Wh

Total: 7kWh

Total Li Charger:

2000W EMC bmsbattery 102V 19A
1500W Meanwell RSP 48V 32A
1000W Meanwell RSP 48V 21A
1000W Meanwell RCP 48V 21A
1000W PowerTen PSU 100V 10A
1000W PowerTen PSU 10V 100A
750W Meanwell RSP 24V 32A
300W Ping 48V
300W Ping 48V

TOTAL Li Charger: 8.8kW
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Farfle   1 MW

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Re: 1 kWh LiPo club, who's in?

Post by Farfle » Jan 11 2012 9:37pm

He he, entering the 1 kw/hr club in style :D . 24s3p of 50c turnigy nano tech (1332 wh/r, but actually puts out 1425 w/hr at 5c) 88v and 15 sag free ahs. :mrgreen:
Test Review Revise Repeat

Nuts&Volts   100 W

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Re: 1 kWh LiPo club, who's in?

Post by Nuts&Volts » Jan 11 2012 11:59pm

Farfle wrote:He he, entering the 1 kw/hr club in style :D . 24s3p of 50c turnigy nano tech (1332 wh/r, but actually puts out 1425 w/hr at 5c) 88v and 15 sag free ahs. :mrgreen:
Thats awesome. Anyway you could do a 1C test :D

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liveforphysics   100 GW

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Re: 1 kWh LiPo club, who's in?

Post by liveforphysics » Jan 12 2012 1:11am

I think a cooler battery question is, who has a 2kw-hr Nano-Tech LiPo pack, AND exceeds it's rated C-rate. :-)

:P :P :P :P :P

It's a lonely club, but it's nice here. :-)
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Farfle   1 MW

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Re: 1 kWh LiPo club, who's in?

Post by Farfle » Jan 12 2012 8:00pm

liveforphysics wrote:I think a cooler battery question is, who has a 2kw-hr Nano-Tech LiPo pack, AND exceeds it's rated C-rate. :-)

:P :P :P :P :P

It's a lonely club, but it's nice here. :-)
Damn... that sevcon is a beast... Even at peak amp draw I'm only pushing this 15 ah pack at 17c :shock: .
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Re: 1 kWh LiPo club, who's in?

Post by nechaus » Jan 13 2012 1:55am

1.1 kwh of thunderskys
740 wh of Turnigy lipos
1.1 kwh headway
about 740 wh of lifep04 18650 not sure of brand
SLA's. 960 watts at best @ 20 hr rate..

next on the list is 2kwh of a123's 20 ah cells

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Re: 1 kWh LiPo club, who's in?

Post by Kingfish » Jan 14 2012 1:54pm

Update:
5S1P 15/2C 5Ah Zippy FlightMax Qty-84.
Most batteries utilized: 15S26P July-August 2011 -> 63V @ 130Ah = 8.19kWh
Farthest on a single charge with this configuration was 165.3 miles between San Rafael and Fort Bragg, California.

When commuting:
15S6P -> 63V @ 30Ah = 1.89kWh
Range is about 50 miles at WOT (32-34 mph), weather depending.

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Re: 1 kWh LiPo club, who's in?

Post by itchynackers » Jan 14 2012 3:00pm

1.110kwh zippy 20c 5s 3ah packs in 25s 4p config
1.332kwh turnigy 20c 4s 5ah packs wired to 8s first (for easier charging) then 24s 3p
Various loose packs with low/bad cells.
9c 9x7f w/ 12awg phases
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Re: 1 kWh LiPo club, who's in?

Post by Ypedal » Jan 14 2012 3:03pm

ES site status page:
http://www.ypedal.com/ES/ES.htm
----------------
http://www.ypedal.com

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ian.mich   10 kW

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Re: 1 kWh LiPo club, who's in?

Post by ian.mich » Sep 12 2012 6:03pm

24s3p 5ah turnigy hardcases for me (18 packs), makes for 1.332kwh.

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GrayKard   10 kW

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Re: 1 kWh LiPo club, who's in?

Post by GrayKard » Sep 12 2012 6:56pm

I carry 6s 20c 5ah turnigy packs in various configurations. Anywhere from right at 1kWh to 1.65kWh. Been in the club since January when I started switching out my Lifepo4 packs.

Gary

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Re: 1 kWh LiPo club, who's in?

Post by mistercrash » Sep 12 2012 7:05pm

20S20P konion 18650V. That's something like 2.5 Kw but it's not on a bicycle, it's in a moped.

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cal3thousand   1.21 GW

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Re: 1 kWh LiPo club, who's in?

Post by cal3thousand » Sep 12 2012 7:39pm

I have 1kWh combined LiPo in my house.

15pieces * 22.2V * 5Ah = 1.66kWh

But my bike is only going to run half at a time :?
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Re: 1 kWh LiPo club, who's in?

Post by Trackman417 » Sep 12 2012 10:28pm

20S2P 5Ah bricks of hardcase turnigy's. :mrgreen: . For when I need the 100 volts of course. I usually run 16-20S
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Re: 1 kWh LiPo club, who's in?

Post by Rumberopie » Sep 13 2012 12:24am

24s3p 12pack zippy flightmax6s5000maH 30c 1332 for me.

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