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Unread 10-10-2014, 11:28 AM   #1
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Default 2003 D.S. 48volt

We got this "03 lifted D.S. on a trade. I bypassed the OBC as per yalls instructions; put 6 new T-875's and cables; new solenoid. Had a Powerwise 3 charger that came with it. It charged all night last night w/out shutting off. Pack was noticeably WARM when I lifted the seat. Pack voltage was only 51.
My question(s): (1) Should the powerdrive 3 shut off auto with obc bypassed?
(2) The cart is taking off strong then gets weak, especially uphill. Is this a speed sensor problem? (3) Do I need to get a DPI from Scottie for this cart?
That's all for now. I thank you all in advance for your help. I am a welder and chicken farmer that had to start wearing the golf cart mechanic hat.
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Unread 10-10-2014, 01:00 PM   #2
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Default Re: 2003 D.S. 48volt

No the charger will not shut off with the OBC bypassed. Without the OBC, the charger is 'dumb'. The batteries need to be properly broken in to attain optimum performance. You really need to figure out your charging problem first. You may have a bad OBC if the charger didn't work before you bypassed it. A DPI is a great way to replace the OBC system.
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Unread 10-10-2014, 01:16 PM   #3
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Default Re: 2003 D.S. 48volt

Thanks Jake! DPI it is.
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Unread 10-10-2014, 03:14 PM   #4
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Default Re: 2003 D.S. 48volt

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Originally Posted by mardad View Post
Thanks Jake! DPI it is.
Good choice, scottyb is the man when it comes to that: http://cartsunlimited.net/48v_Battery_Charger.html
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Unread 10-10-2014, 03:24 PM   #5
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Default Re: 2003 D.S. 48volt

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Originally Posted by mardad View Post
Pack was noticeably WARM when I lifted the seat. Pack voltage was only 51
If that 51v was read as the pack was just off the charger, you may not have the charger receptacle wired correctly to your new batteries.

Double check that the red wire from receptacle is going to pack positive.
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Unread 10-10-2014, 03:35 PM   #6
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Default Re: 2003 D.S. 48volt

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If that 51v was read as the pack was just off the charger, you may not have the charger receptacle wired correctly to your new batteries.

Double check that the red wire from receptacle is going to pack positive.
Yes sir it is.
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Unread 10-10-2014, 03:37 PM   #7
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Default Re: 2003 D.S. 48volt

Thanks Sergio.
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Unread 10-10-2014, 03:41 PM   #8
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Default Re: 2003 D.S. 48volt

Question #2 in my original post about starting off strong then get weak........ do I have a speed sensor problem? I did Tahoedawg's test and I cant tell if I'm getting resistance when I push the cart. The beeper does sound off, however.
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Unread 10-10-2014, 03:52 PM   #9
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Default Re: 2003 D.S. 48volt

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Question #2 in my original post about starting off strong then get weak........ do I have a speed sensor problem? I did Tahoedawg's test and I cant tell if I'm getting resistance when I push the cart. The beeper does sound off, however.
You'll definitely feel resistance if it's working properly. Best way to test is find a steep hill, let your foot off the brake, and see if the cart attempts to slow itself.
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Unread 10-10-2014, 04:48 PM   #10
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Default Re: 2003 D.S. 48volt

Thanks Jake. Will do.
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