Endless Sphere

It's a trade off. Big heavy bulk, longer life or smaller lighter and shorter life. You could still get a couple of years use. My Bosch battery on my Bosch Mid drive is 3 years old and I don't notice any loss of range, though I admit I haven't had the time to use it the last year and I store it aroun...

Are ping batteries still costing the same as they did 5 years ago ?

There's much better available now that are smaller and lighter.

Bosh are limited by ridiculously low E.U power limits of 250 watts so they can only get so much torque, however they use tricks to fool testing equipment by delaying full power ramp up so they get away with 500 watts and about 750 peak..... I did'nt realize Bosch was owned by Volkswagon? :mrgreen: ...

Bosh are limited by ridiculously low E.U power limits of 250 watts so they can only get so much torque, however they use tricks to fool testing equipment by delaying full power ramp up so they get away with 500 watts and about 750 peak. I have the 2013 Bosch on a Haibike Trekking. And it's certainly...

I remember when playing around with LiPo that charging it cold didn't charge at the same C rate on the Icharger ? I never used temp sensors to charge LiPo. I'm also nearly sure I observe the Leaf charge at a higher rate in warmer weather , let me explain. Yesterday I charged the Leaf from almost 0% ...

Maybe but it's the cells chemistry and internal resistance changes that allow Nissan to charge the 30 Kwh faster, this came from Nissan themselves. I'm not debating the charger limiting the power I know this from charging countless LiPo cells with balance chargers. But the "actual" limiting factors ...

I was running 24S Lipo, crazy, had to limit the throttle and at that was still doing 40+ mph. I would just install new halls again, and go back to sensor controller. What happened the halls ? Great motor but watch steep hills with over 2.5 Kw. If you got steep hills then maybe best to get a smaller ...

Gregory wrote:Have you checked you have the correct phase/hall combination?

Didn't matter for me, it would only work with one combo as far as I remember.

Here is this what you were hearing ? and then it won't accelerate more unless you back off the throttle ?

https://endless-sphere.com/forums/viewt ... 30&t=34887

Seems Nissan themselves varied that the chemistry and internal resistance is what allows the 30 Kwh to charge faster . I'm sure ye read the info on it and no need to link to it here.

You need sensor controller above about 2.5 kw. I also experienced this.

At 3.5 kw this motor plies.

I'll see if I can find my old thread on the matter.

Well , in the case of the Nissan leaf, charging does slow down noticeably even with a colder weather can see a 10-15 min increase in fast/DC charge times.

Regen also weakens as the battery ages.

And battery charge times increase on the DC charger also when the battery ages.

So what If Dogman and I experience a sluggish LiPo pack for instance and there is no BMS in between what's causing the reduced performance ? and does the same not apply to the Leaf chemistry ? and I've never charged LiPo at high rates so probably never noticed any difference in charging but I'm gues...

Hi Dogman, Exactly my observations with LiPo, can't remember the effects of cold on my old Ping. So I would assume the same thing going on with LiPo is the same observed when "charging" the Leaf on the ChADeMo fast charger ? as well as people suffering increased charge times which was observed in th...

Read this form . University of Wisconsin Milwaukee UWM Digital Commons It's not the only reference I can find on the subject either in relation to internal resistance, which is I presume related to the effects of cold on the chemistry itself. http://dc.uwm.edu/cgi/viewcontent.cg...46&context=etd Quo...

Thanks for that Justin, How then do you notice a lot less amps can be drawn from a cold LiPo pack with no BMS doing any monitoring ? And so if the ramp down current on the Nissan Leaf At the chaDeMo chargerfor instance starts at about 60% for the sake of arguing that by 60 % it's pulling 35 Kw from ...

My apologies for the confusion, like I mentioned before, I didn't bother to read that thread. The charger is always capable of whatever current it can deliver. When you plug into a cold pack, the BMS tells the CHAdeMO to not exceed some current value that is appropriate for that temperatures packs ...

The thermal kinetics of the system determine the ion diffusion rate of lithium ions to migrate into the anode (ideally in an even distribution throughout the coating of active material) to intercalte into the carbons structure while charging. Temperature dependant thermal kinetics of ions and molec...

The battery is temperature sensitive. People with the Model S have found that charging in low temperatures takes a lot longer than in higher temperatures - an effect that is increased with low charging rates. Some people have also reported that regenerative braking will not work in extreme cold wit...

Does increasing internal resistance in the cold mean that the battery itself won't accept or demand the full charge current or is this controlled by the charger ?

Boat Mad also thinks internal resistance is meaningless because of the information in the below link and doesn't increase throughout the life of the battery.

http://batteryuniversity.com/learn/arti ... resistance

From post 41 on this thread read on.

http://www.boards.ie/vbulletin/showthre ... 142&page=3

This guy is a bit of an ass but anyway I would greatly appreciate if someone for the sake of proper information could tell me if this guy is the battery expert he claims to be ? Look at post 22 here, then read on. You really need to see the original post and read on. http://www.boards.ie/vbulletin/s...

Thanks.

Whatd speed do you think this 1000 W motor would be good for ?