minuteman2k wrote:
I watch too much EVTV with Jack Rickard, such a talanted guy knows everything !! lol
So, I would like to believe youre being sarcastic...
minuteman2k wrote:
I watch too much EVTV with Jack Rickard, such a talanted guy knows everything !! lol



dkw12002 wrote:Liveforphysics, I know this is early 2012, but I wonder what advancements are on the horizon for electric battery technology that Zero might use in 2013 models. Is there a different chemistry that might extend the range without making larger batteries? Any breakthroughs in more rapid charging, e-motor technology, etc. that Zero is looking at?



Ykick wrote:Sorry if off topic but regarding the previous Zero model 2010-2011 battery pack - I understand it uses 4.2V/cell Moli's in 14S config. Would it be wrong and/or dangerous to attempt to re-power with 14S RC Lipo using the stock BMS? I also wonder what LVC threshold the older model Zero BMS employs?

Doctorbass wrote:Ykick wrote:Sorry if off topic but regarding the previous Zero model 2010-2011 battery pack - I understand it uses 4.2V/cell Moli's in 14S config. Would it be wrong and/or dangerous to attempt to re-power with 14S RC Lipo using the stock BMS? I also wonder what LVC threshold the older model Zero BMS employs?
That is an interesting question. The 26700A emoli cells are rated for 4.2 to 2.5V I guess that since it's LiMn cells they are limited to 3.4 or 3.5V LVC.. leaving like 10-15% in the pack for the health.
What is nice with this 14s LiMn pack is that you can match in parallel it with a 16s LiFePo4 pack with his own BMS ( with protecting diode in serie) and they should have a pretty close voltage range except that the flat discharge curve of the LiFePo4 will only share current during the last 60% discharge since the 14s LiMn voltage should stay above the 16s lilfepo4 for the first 40% or so... I might do that on my DS 2011 as range extender pack.
Doc

Doctorbass wrote: I might do that on my DS 2011 as range extender pack. Doc


Doctorbass wrote:Sat Mar 17, 2012 4:38 pm
No worrie guys![]()
I should get it next week i hope.![]()
I will review everything i can in the way that Zero can autorize me to post that... I must talk to Luke about thatIf the zero have some secret i will keep it secret as well until Luke give any autorizations.

Ok first ride this morning at 45-65 mph was 25.8 miles and took 3.13 kwh to fully recharge. So that's 121 watt hours per mile.




deVries wrote:Doctorbass wrote:Sat Mar 17, 2012 4:38 pm
No worrie guys![]()
I should get it next week i hope.![]()
I will review everything i can in the way that Zero can autorize me to post that... I must talk to Luke about thatIf the zero have some secret i will keep it secret as well until Luke give any autorizations.
Bump!![]()
When is that review thread starting? Did you get your ZeroSpecs!
![]()
Does Luke post anywhere on ES about Zero & what he does there? I read somewhere he spec'd the new batteries from some Korean company?Are these batteries only for OEM & not resale to us?

Doctorbass wrote:
Yessss!
I got it!!![]()
![]()
![]()
![]()
A nice beautifull 2011 zero motorcycle!.
Still not tried it yet. you know me, as usual, i am modifing it before trying it![]()
![]()
I added a balance plug to the 4.3kWh battery with turnigy 12 gauge wires and 15 andersons PP30 connectors.
This will allow me to watch the balance state of the battery on the celllog monitoring board i have and also to rebalance the low cell bank even if it happen.
The charger and BMS work to keep cells at 4.16V for the full charge. The BMS make a little HF sound all of the time and seem to keep battery balanced 24/24h
i'll start a thread about that soon.
Doc

deVries wrote:Doctorbass wrote:
Yessss!
I got it!!![]()
![]()
![]()
![]()
A nice beautifull 2011 zero motorcycle!.
Still not tried it yet. you know me, as usual, i am modifing it before trying it![]()
![]()
I added a balance plug to the 4.3kWh battery with turnigy 12 gauge wires and 15 andersons PP30 connectors.
This will allow me to watch the balance state of the battery on the celllog monitoring board i have and also to rebalance the low cell bank even if it happen.
The charger and BMS work to keep cells at 4.16V for the full charge. The BMS make a little HF sound all of the time and seem to keep battery balanced 24/24h
i'll start a thread about that soon.
Doc
Hello,
Yes everything was stock.
it's a ZERO DS 2011 demo i bought. I have the oem charger an one quick charger that just add charge power to the first ( parallel connections). total charging power 2000W
Everry components will remain the same except that i will add a 16s lifepo4 A123 range extander pack on it ( will add 2kWh energy) for a total of 6.3kWh.
Here is some pictures of my Zero Ds battery while i was modifying it for adding extrenal balance connectors:
Awesome! New "wheels" with new motor & new batts. Modify? Doc?![]()
![]()
![]()
![]()
That's an interesting observation if the BMS is doing "active balancing" 24/7.
Was everything "stock" (standard equipment) before you modified anything? The exact model is?
Anyway, ... look forward to your review![]()
![]()
![]()



Bison_69 wrote:Hi Stephane (DoctorBass),
This cells project build is so interesting... could you give more details... like:
_ quantity of pouch cell you are using, the setup xSxP....
_ how you did your cells configuration inside this box...
_ what was the procedure you used to verify each cell and balanced them prior building this pack...
_ what is the final output of this pack V=? and Ah=?
_ what type of BMS and charger you are using...
_ what range do you expect on one charge with this nice emotorcycle and average speed...
_ And finally can we see some pictures of this wonder!.... I can't wait.
Thanks

Doctorbass wrote:it's a ZERO DS 2011 demo i bought.

deVries wrote:Doctorbass wrote:it's a ZERO DS 2011 demo i bought.
I hope you got an ES Doctorbass *discount* on your demo too!You deserve it.
![]()
Btw, since we are waiting for your review, etc. can you tell us what is the battery manufacturer & chemistry & rating per cell of the Zero cells?![]()
Do you know what manufacturer & chemistry & rating per cell is used for the 2012 Zero?The 2012 supposedly got spec'd with a Korean source, so it would be interesting to compare "cell specs" between both year models.
![]()

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