DIY Electric Car Forums banner

1 - 4 of 4 Posts

·
Registered
Joined
·
70 Posts
Discussion Starter #1
I need to invest in a real battery pack for my EV.
Details (sorry to be repetitive for people who already
know my car and driving pattern).

93 Festiva 5 speed with KTA kit - 9" ADC motor, kit
battery racks that hold 16 golf cart batts (but really
only 15 because of where I put the controller),
originally a BC-20 charger, but I replaced it with 10
individual 6 A chargers (1 per battery). Curtis 72 -
120 V / 550 A controller. The car is bottomed out if
I put in even 13 golf cart size batts. No easy way to
beef up the suspension.

Driving habits - I need fast acceleration (and I have
it right now). Better than stock ICE to merge in and
out of heavy traffic. I need a real world every day
range of 8 miles at speeds of 35 - 45 MPH. I need to
be able to do that range even in cold weather in
Atlanta, GA (which really isn't that cold). I want
the batteries to last at least 2 years. I drive it
every day back and forth to work, 8 miles per day, 5
days per week, 50 weeks per year, for 2 years of use.
I can't charge at work.

In the past, the car ran on 96 V of Deka Group 24 AGM,
108 V of mixed AGM / flooded, 120 V flooded group 24
batts. Also, it used to run on 13 x 8 V of T-875's.
Right now, it has 10 Group 24, mixed AGM and flooded
(but charged individually). Some batts went bad.
That's why it is mixed.

Options:

8 x 12 V of Optima Yellow Tops (the small ones you can
get at Sam's Club for about $165 / ea).

12 X 8 V of flooded golf cart batts - Energizer. I
believe they are about $75 / ea.

10 x 12 Trojan flooded 12 V Group 24 batts. Which I
hear are the only good flooded batts in a Group 24
size. ??? on the price, but I think about $190 / ea.

Other suggestions????

I want something that will last and give good
performance without completely breaking the bank.

Thanks for the advice.

Steve




____________________________________________________________________________________
Take the Internet to Go: Yahoo!Go puts the Internet in your pocket: mail, news, photos & more.
http://mobile.yahoo.com/go?refer=1GNXIC

_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev
 

·
Registered
Joined
·
70 Posts
Discussion Starter #2
Hi Steve,

Did you see the post about the BB600s in Georgia come through the other day=
? These might work well for you, although I don't remember where you are l=
ocated, and he didn't sound interesed in shipping them. If you are not too=
far away it would be worth the trip to pick them up. 10 BB600 cells are f=
airly equivalent in size and performance to one Optima, but they have a muc=
h longer life span.

damon


> Date: Tue, 21 Aug 2007 15:53:31 -0700
> From: [email protected]
> To: [email protected]
> Subject: [EVDL] I need battery advice ...
>
> I need to invest in a real battery pack for my EV.
> Details (sorry to be repetitive for people who already
> know my car and driving pattern).
>
> 93 Festiva 5 speed with KTA kit - 9" ADC motor, kit
> battery racks that hold 16 golf cart batts (but really
> only 15 because of where I put the controller),
> originally a BC-20 charger, but I replaced it with 10
> individual 6 A chargers (1 per battery). Curtis 72 -
> 120 V / 550 A controller. The car is bottomed out if
> I put in even 13 golf cart size batts. No easy way to
> beef up the suspension.
>
> Driving habits - I need fast acceleration (and I have
> it right now). Better than stock ICE to merge in and
> out of heavy traffic. I need a real world every day
> range of 8 miles at speeds of 35 - 45 MPH. I need to
> be able to do that range even in cold weather in
> Atlanta, GA (which really isn't that cold). I want
> the batteries to last at least 2 years. I drive it
> every day back and forth to work, 8 miles per day, 5
> days per week, 50 weeks per year, for 2 years of use.
> I can't charge at work.
>
> In the past, the car ran on 96 V of Deka Group 24 AGM,
> 108 V of mixed AGM / flooded, 120 V flooded group 24
> batts. Also, it used to run on 13 x 8 V of T-875's.
> Right now, it has 10 Group 24, mixed AGM and flooded
> (but charged individually). Some batts went bad.
> That's why it is mixed.
>
> Options:
>
> 8 x 12 V of Optima Yellow Tops (the small ones you can
> get at Sam's Club for about $165 / ea).
>
> 12 X 8 V of flooded golf cart batts - Energizer. I
> believe they are about $75 / ea.
>
> 10 x 12 Trojan flooded 12 V Group 24 batts. Which I
> hear are the only good flooded batts in a Group 24
> size. ??? on the price, but I think about $190 / ea.
>
> Other suggestions????
>
> I want something that will last and give good
> performance without completely breaking the bank.
>
> Thanks for the advice.
>
> Steve
>
>
>
>
> _________________________________________________________________________=
___________
> Take the Internet to Go: Yahoo!Go puts the Internet in your pocket: mail,=
news, photos & more.
> http://mobile.yahoo.com/go?refer=3D1GNXIC
>
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev

_________________________________________________________________
Connect to the next generation of MSN Messenger
http://imagine-msn.com/messenger/launch80/default.aspx?locale=3Den-us&sourc=
e=3Dwlmailtagline

_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev
 

·
Registered
Joined
·
70 Posts
Discussion Starter #3
Steve Powers wrote:

> I want something that will last and give good
> performance without completely breaking the bank.

Go for 10 Optima D34s or D34Ms (YT and BT, respectively). 8mi should be
about 50% DOD for the pack, and they should easily deliver the 500
cycles you'd require over 2yrs.

You've already side-stepped the reg issue by having 10 individual 6A
chargers.

The performance with your 120V/550A max Curtis will be good, and the
120V pack will be less deeply cycled than your suggested 96V Optima pack
and will better handle the cooler periods (more available capacity =
more usable capacity remaining in cool temps).

Cheers,

Roger.

_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev
 

·
Registered
Joined
·
70 Posts
Discussion Starter #4
On Tue, 21 Aug 2007 15:53:31 -0700 (PDT), you wrote:


>Driving habits - I need fast acceleration (and I have
>it right now). Better than stock ICE to merge in and
>out of heavy traffic. I need a real world every day
>range of 8 miles at speeds of 35 - 45 MPH. I need to
>be able to do that range even in cold weather in
>Atlanta, GA (which really isn't that cold). I want
>the batteries to last at least 2 years. I drive it
>every day back and forth to work, 8 miles per day, 5
>days per week, 50 weeks per year, for 2 years of use.
>I can't charge at work.

I think I can give you some advice for cold weather driving. Someone
on the list advised, (I apologize I don't remember who), "Go to
WalMart and buy a/several inexpensive waterbed heaters. Put them
under your batteries. While you charge they keep the pack warm. They
have a thermostat and temp probe."
That plus a little insulation should keep the temp up during the
day. This is what I plan to do.

R. M. Milliron

1981 Jet Electrica
http://www.austinev.org/evalbum/702

This machine has been garaged for 17 years.
I am upgrading it and getting it running. Tabitha,
my daughter, named it, "Pikachu". It's yellow and black,
electric and contains Japanese parts, so I went with it.


_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev
 
1 - 4 of 4 Posts
Top