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Unread 12-16-2012, 05:44 AM   #1
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Default 72V TXT or bust....

I've been planning, reading and researching 72v carts. I have received most of my parts needed to start the conversion on my '97 txt series cart. I will be using the following major components.

-24 Enersys SBS30 12v batteries
-Alltrax SPM 72400 controller
-Quick Charge select-a-charge 72v 20A charger
-Albright SW200 main contactor
-stock series motor (for now)

The number one item in any electric cart is the batteries so I started there. I had to make 24 batteries (smaller then GC batts) to fit in the stock tray as my preferred location. Turns out I only had to slightly modify one side of the stock battery tray to get 12 batteries in.

12 batteries down and 12 to go. Since my batteries are half the height of GC batts I decided to make a second deck directly over the stock tray. I used bed frame (free) to make the second deck. I used polycarbonate plastic sheet on the bottom side to insulate just in case something decided to get close. I used another thick plastic, cutting board material, to act as a solid spacer and hold down for the bottom batteries. The upper deck will lock the lower batteries in place once mounted.

Everything worked well and the body and seat still fits. Pictures are always preferred here so here's the first batch.
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Unread 12-16-2012, 05:46 AM   #2
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Default Re: 72V TXT or bust....

Here's the bottom side of the upper battery deck.
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Unread 12-16-2012, 07:28 AM   #3
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Default Re: 72V TXT or bust....

How hard is it going to be for you to get to your lower set of batteries for any maintenance? Looking good
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Unread 12-16-2012, 07:50 AM   #4
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Default Re: 72V TXT or bust....

All that and a STOCK motor!?!?

C'mon now man...
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Unread 12-16-2012, 07:58 AM   #5
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Default Re: 72V TXT or bust....

Quote:
Originally Posted by LostHusker View Post
How hard is it going to be for you to get to your lower set of batteries for any maintenance? Looking good
Batteries are sealed AGM. No maintenance required. Individual battery replacement will require top deck batteries to be removed. Easily done even with body on. There are 4 corner bolts attaching the upper deck to the stock battery tray.
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Unread 12-16-2012, 07:59 AM   #6
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Default Re: 72V TXT or bust....

Looking Good Planet electric cars used to stack sealed batteries. With the right connections they should be maintenance free.
Each Battery looks like it is 2/6v cells in series?
Can you ID the Batteries for us?
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Unread 12-16-2012, 08:01 AM   #7
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Default Re: 72V TXT or bust....

Quote:
Originally Posted by Dela View Post
All that and a STOCK motor!?!?

C'mon now man...

Uh ya. Why replace it if it ain't broke? Anpother reason is budget. Have you priced 72v motors? This cart is probably the cheapest 72v conversion on this forum due to my battery connection.

The cart will run with the stock motor for a while if I keep an eye on motor temps. There are a couple members that have had 72v on stock motor for a long time.
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Unread 12-16-2012, 08:04 AM   #8
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Default Re: 72V TXT or bust....

Quote:
Originally Posted by scottyb View Post
Looking Good Planet electric cars used to stack sealed batteries. With the right connections they should be maintenance free.
Each Battery looks like it is 2/6v cells in series?
Can you ID the Batteries for us?

2/6v? I don't understand that. I will have 4-12v batteries in parallel and 6 sets of those in series to make 72v.

The batteries are Enersys SBS30 as mentioned in OP.
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Unread 12-16-2012, 08:23 AM   #9
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Default Re: 72V TXT or bust....

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Originally Posted by sportcoupe View Post
2/6v? I don't understand that. I will have 4-12v batteries in parallel and 6 sets of those in series to make 72v.

The batteries are Energsys SBS30 as mentioned in OP.
Are they 3v cells I'm seeing then? Energsys SBS30 turns up nothing on a google search.
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Unread 12-16-2012, 08:48 AM   #10
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Default Re: 72V TXT or bust....

Scott, looks like it's Enersys (no "g"). Enersys PowerSafe SBS30 is what I found using Bing.

I don't see these as being cost effective for mere mortals given their cost and aH rating. Perhaps I'm missing something...

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