Lithium Polymer Battery (Abbreviated LI-Poly or LiPo)

[QUOTE=BubbaJoe13;408]Does anyone know where to get the plate Lithium Ion Batteries that NASA created. I saw something about them on Modern Marvels and I know that Hybrid Technologies uses them for their electric cars and motorcycles. They say that they put out about a 100 amps and charge fully in about 6 hrs. that would be a dream from im thinking. but then again, im pretty new to this forum.
Any info would be great! thanks guys[/QUOTE]

Those would NEVER be available to a consumer level. Unfortunatly ): And that battery is not THAT impressive, 100 A and charge in 6 hrs? I am more interested in the new battey technologies that allow a fast charge of 6 min! granted that is to 88%. And most other conversion batteries will easily put out more than 100A.

[QUOTE=joseph a clay sr;209]What do you think about this battery are these good enough for a very fast long range small vehicle setup or is this a bad Idea. how many do you think i would need. My goal is for a small 4 seat sportcompact i need over 50 mile range and I want to go wicked FAST!! like a Z24 cavalier or Honda civic at worst a geo metro wich is a good car but i would like to get a car off the street that consumes more gas. I would feel like im helping more.

http://www.electricvehiclesusa.com/product_p/ba-mk-8a8d.htm

Battery (MK 8A8D AGM 12v 245ah)

Specifications-
Nom Voltage(V) 12
Weight 158 (71.7kg)
Length (mm) 20.75 (527mm)
Width (mm) 11 (279mm)
Height (mm) 11 (279 mm)
Milliohms Resistance 3.0
Operating Temp -40°F (-40°C) -140°F (60°C)
Float Charging Voltage 2.25 - 2.30VPC
Cycle Service Charging Voltage 2.40 - 2.43VPC
Capacity at C/100 257 Capacity at C/20 245
Terminal T975

General Information-

The Benefits of a MK AGM Battery:
Sealed Absorbed Technology: Completely sealed; valve regulated battery with efficient recombination.
250 quality control checks through ISO 9001.
UL recognized components MH17218.
Rated non-spillable by ICAO/IATA/DOT.
Forged terminals and bushings assure no leakage.
Tank formation ensures voltage matching between cells[/QUOTE]

That is the wrong battery for speed rather than distance. This will give you the oppisite. Since you want a fast system, you will be talking 144v that is 12 of these puppies which is about $4800 without shipping! That will get you your acceleration and speed, but you will also end up with a range of like 180 miles, at least. Not to mention the weight of the pack which will be a little under a ton (dont think a civic will hold this, let alone a geo!) You want a battery that has a low AH that you can buy and use a lot of to get a high pack voltage. Something like 12v @ 80AH X 12 = 144v

According to Bob at EV-America, the new Trojan 1275 battery is the way to go for lead acid. And after all the research I’ve done, I tend to agree. They weigh 82lbs, 20hr rate is 150ah, and my local battery supplier says they’re $192 a piece which would cost a good $2500 for the pack. So in my car I’d like to run 144v and I think these are the pb solution. But even if I have to spend twice that, isn’t there another solution that doesn’t weigh so darned much?? I hate the thought of taking a perfectly designed car and cutting a huge hole in the trunk and replacing the springs because of battery size and weight. I’m waiting for Firefly to start producing but I’m not holding my breath. I like lithium polymer as well. Is it possible to buy batteries that will move my 3000lb 144vdc car for 60-100 miles or so that don’t weigh so much? I don’t mind paying $4-5K for the pack but I just can’t seem to find anything.

Thanks for any help.

Rick Stewart

Hi,
here are a few links for lithium polymer and Lithium iron (LiFePo4) battery suppliers.

http://www.alibaba.com/catalog/100020352/Li_Ion_Power_Battery_For_E_Car.html:
Lithium Ion “for e-car”, 100Ah, but only a 2C discharge rate… probably not enough. I’m not sure what “15 bags” in the “minimum order” field means…

http://www.alibaba.com/catalog/11848026/Lithium_Polymer_Battery_Pack_Cell.html:
Lithium Polymer customizable cells, I sent them an email for info on discharge rate etc… doesn’t seem too expensive (360$/kWh)

http://www.dlgbattery.com/DLGEnglish/main.asp:
Lithium Ion and Polymer batteries, no idea about pricing or power etc, I’ll update when I have time to browse around their site a little

http://szshyi.en.alibaba.com/product/50084528/51995342/Polymer_Lithium_Ion_Battery_Cell/High_Discharge_Rate_Li_Polymer_Battery.html
High discharge rate Li-Po battery packs, they also make high capacity packs

They usually sell minimum 1000pc, so if there are a few more people interested, I say we make an order for 4-5 people (if not more), this way they’re less expensive… let me know if you’re interested. I’ll post on the diyelectriccar.com forums as well.