Fran Hall RCR
GT40s Sponsor
Does anyone have any experience with these batteries....
12D2000 EP Horizon Battery from Thundersports Racing
12D2000 EP Horizon Battery from Thundersports Racing
Battery question
- Thread starter gt40fran
- Start date
Ron Earp
Admin
Not me, but it looks interesting. I'd like to know more about the electrolytics of it. My guess is they've found a specially packaged lead/acid cell that was intended for a high amp hour use and re-badged it for race use.
My dad used to design submersibles and sonar equipment and would always come home with cool batteries, capacitors, magnets, and what not from the stuff at BL and Navy contracts. Some were exotic, especially designed for special uses, draws, etc and others were standard chemistry in a nifty box. I made more than a few go up in smoke.
R
My dad used to design submersibles and sonar equipment and would always come home with cool batteries, capacitors, magnets, and what not from the stuff at BL and Navy contracts. Some were exotic, especially designed for special uses, draws, etc and others were standard chemistry in a nifty box. I made more than a few go up in smoke.
R
Fran Hall RCR
GT40s Sponsor
We are going to package 30 of them in the SLC chassis for an electric vehicle customer.....bloody heavy though .
That mfg. (horizon battery), needs some truth in advertising!
There is NO WAY a $515 battery will supply 1776 amperes @ a nominal 10.5 VDC for 1 minute. I dare say it will not supply its 1 Hr. rate @ 68 amperes!
Our 28VDC SAFT Ni cd's on the Falcon 900EX are 36 amp hr. They cost 11K each there are 2 on board.
Each battery fully top charged will supply this...
1 hr = 36 amps @ 28 VDC
30 min = 72 amps @ 28 vdc
15 min = 144 amps @ 28 vdc
7.5 min = 288 amps @ 28 vdc
3 min 45 sec = 576 amps @ 28 vdc
1 min 52 sec = 1152 amps @ 28 vdc
56 sec = 2304 amps @ 28 vdc
( *note the battery has now melted and ignited all nearby aluminum alloy structure! )
Save your money Fran. Buy an Optima.
If you must have that amount of power @ 12 vdc PM me and I'll build you a 12 vdc aircraft Ni cd. It won't be cheap though!
Cheers,
Scott
There is NO WAY a $515 battery will supply 1776 amperes @ a nominal 10.5 VDC for 1 minute. I dare say it will not supply its 1 Hr. rate @ 68 amperes!
Our 28VDC SAFT Ni cd's on the Falcon 900EX are 36 amp hr. They cost 11K each there are 2 on board.
Each battery fully top charged will supply this...
1 hr = 36 amps @ 28 VDC
30 min = 72 amps @ 28 vdc
15 min = 144 amps @ 28 vdc
7.5 min = 288 amps @ 28 vdc
3 min 45 sec = 576 amps @ 28 vdc
1 min 52 sec = 1152 amps @ 28 vdc
56 sec = 2304 amps @ 28 vdc
( *note the battery has now melted and ignited all nearby aluminum alloy structure! )
Save your money Fran. Buy an Optima.
If you must have that amount of power @ 12 vdc PM me and I'll build you a 12 vdc aircraft Ni cd. It won't be cheap though!
Cheers,
Scott
Help me think throught this.................
Batteries are readily accessable in GT40s. Relativily cheap, opps, inexpensive. So why crank out the big bucks for a throw-a-way item? Just to say you have spent $500 for bloody battery?
Maintain the battery condition, put a volt meter on the car when it is running every once and a while, and you should be good to go. Falls under regular maintenance, right?
Batteries are readily accessable in GT40s. Relativily cheap, opps, inexpensive. So why crank out the big bucks for a throw-a-way item? Just to say you have spent $500 for bloody battery?
Maintain the battery condition, put a volt meter on the car when it is running every once and a while, and you should be good to go. Falls under regular maintenance, right?
Fran Hall RCR
GT40s Sponsor
Gary.....an electric vehicle will require 30 of the units listed (customers preference at this point...not mine)...they would be for a Superlite Coupe too...not a 40
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Ron Earp
Admin
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> </o>Now Scott, you of all people should know better than to use anything in the aviation industry for price/performance comparisons.
I submit that the aviation industry is unsurpassed in self-preservation. Any industry that can maintain prices for parts, motors, etc. the way they can has seriously got everything under control!I'll be interested to see how those batteries perform once Fran gets them wired up.
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>30 * 57.6 lb = 1,728 lb.
I'd call it a SHC.
Carefull you don't short them out and burn that new shop down.
Fran Hall RCR
GT40s Sponsor
I know...when the customer told me the quantity required I was floored.....for that very reason....
I guess the only good thing is that electric motors basically provide full torque instantly so it may still accelerate quite well.....I hope...
I guess the only good thing is that electric motors basically provide full torque instantly so it may still accelerate quite well.....I hope...
Ron,
5 huge reasons Airplane parts are expensive ...
LAWYERS
MANUFACTURERS LIABILITY INSURANCE
Quality of the parts
You can't pull over and get out!
LAWYERS
Cheers,
Scott
5 huge reasons Airplane parts are expensive ...
LAWYERS
MANUFACTURERS LIABILITY INSURANCE
Quality of the parts
You can't pull over and get out!
LAWYERS
Cheers,
Scott
How come they are using "Lead Acid" batteries, thats milk float technology.
There's stacks on the web about this stuff, but they are not the most efficient, maybe its a safety thing.
Are you putting in a regenerative brake system?? now that racks up the range and make the brakes last for ever.
You should get one over here, their is a lot of interest in this technology and funding is starting to come online for it...............
Cheers
Joe
There's stacks on the web about this stuff, but they are not the most efficient, maybe its a safety thing.
Are you putting in a regenerative brake system?? now that racks up the range and make the brakes last for ever.
You should get one over here, their is a lot of interest in this technology and funding is starting to come online for it...............
Cheers
Joe
Fran Hall RCR
GT40s Sponsor
I am doing the rolling chassis and making the battery racks.....
Fran,
I appologize for me misreading your post. Polish, age, ect, all of the above.
What can I say but sorry.
I appologize for me misreading your post. Polish, age, ect, all of the above.
What can I say but sorry.
Fran Hall RCR
GT40s Sponsor
Joe,
no regen on the first one.....not that I have been made aware of anyway.
This appears to be the first of many alternative power kits we will be building..apair of Superlite Diesel Coupes and Roadsters have been talked about too.....
Gary,
thanks for the apology but not necessary.......(just renew your prescription for your glasses before you drive on the racetrack again.......)
no regen on the first one.....not that I have been made aware of anyway.
This appears to be the first of many alternative power kits we will be building..apair of Superlite Diesel Coupes and Roadsters have been talked about too.....
Gary,
thanks for the apology but not necessary.......(just renew your prescription for your glasses before you drive on the racetrack again.......
)Chris Duncan
Supporter
A google search yields the manufacture. Some more info on this battery. The link on the racing re-seller you link is dead.
http://www.technologydiamonds.com/batteries/ephorizon/index.htm
sort of suspect, this page comes up but all it's links are dead
Isn't nickle metal hydride (NiMH) the latest tech in use for electric vehicles? That's what's in the Honda Hybrids, better power to weight ratio than the Nicad or lead/acid.
http://www.technologydiamonds.com/batteries/ephorizon/index.htm
sort of suspect, this page comes up but all it's links are dead
Isn't nickle metal hydride (NiMH) the latest tech in use for electric vehicles? That's what's in the Honda Hybrids, better power to weight ratio than the Nicad or lead/acid.
Fran Hall RCR
GT40s Sponsor
Kalun,
agreed but the cost vs the technology growth is what has directed my client to lead acid.
He does not want to layout considerable money on the current NiMH and have the technology/price change drastically whilst he sorts out his project...
He figures if we can package the Lead acid batteries then when the time comes for a NiMH upgrade it will be far easier....
agreed but the cost vs the technology growth is what has directed my client to lead acid.
He does not want to layout considerable money on the current NiMH and have the technology/price change drastically whilst he sorts out his project...
He figures if we can package the Lead acid batteries then when the time comes for a NiMH upgrade it will be far easier....
Fran, that approach sound logical. If you use the cheaper option and set up for the worst case, provided it is not totally unworkable (weight, battery sustained output, etc.) then you can improve as it gets refined. Have you looked at what the Toyota Prius uses? It may be named differently over there, and is of course a hybrid, but I've driven them and they shoot up the road quite quickly on battery power alone. Not anywhere near the GT40 bracket, but serious day to day performance. The control technology obviously extends the battery usefulness by recharging from the petrol engine and regenerative braking, but elements of this may be adaptable to your purpose.
Dalton
Dalton
Group Purchase? Lithium Batteries - EV FORUM - ELECTRIC VEHICLE FORUM
If he is into EV's he probably already knows about this goup buy for Lithium Ion batterys being organized. I am curious as to what type of system he would be building though. I am sure he as done his homework but those batteries just sound kind of "off" to me for use in an EV unless he is building a drag race car. They look more like a starting battery and probably wont survive very long in a street driven EV with deep discharge cycles.
Prius uses NiMH good for about 8 minutes total driving if there is no ICE motor assist. You wont find any high capacity NiMH packs available unless you build your own using 10000 individual cells and some sort of fancy managment system. Some company (that is part owned by an oil company, go figure) has a US patent on high capacity NiMH cells and refuses to allow them for sale to anything other than big fleet type buyers (govt, military etc.)
Keep in mind, I am no pro, just have been doing alot of research lately to convert my civic.
If he is into EV's he probably already knows about this goup buy for Lithium Ion batterys being organized. I am curious as to what type of system he would be building though. I am sure he as done his homework but those batteries just sound kind of "off" to me for use in an EV unless he is building a drag race car. They look more like a starting battery and probably wont survive very long in a street driven EV with deep discharge cycles.
Prius uses NiMH good for about 8 minutes total driving if there is no ICE motor assist. You wont find any high capacity NiMH packs available unless you build your own using 10000 individual cells and some sort of fancy managment system. Some company (that is part owned by an oil company, go figure) has a US patent on high capacity NiMH cells and refuses to allow them for sale to anything other than big fleet type buyers (govt, military etc.)
Keep in mind, I am no pro, just have been doing alot of research lately to convert my civic.
