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Old 12-02-2014, 02:47 PM   #1
Naturile
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Default Loosing power?

98 txt battery's right at 1 year old us battery's press the pedal if in a ditch barley comes out it would jump out before. Also noticed when lights are on and press pedal lights sort of get dimmer never done this before. What could it be ?
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Old 12-02-2014, 02:56 PM   #2
JohnnieB
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Default Re: Loosing power?

Unless you have a charger that meets US Battery's charging profile, your batteries are chronically being undercharged.

What Make/Model charger are you using?
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Old 12-02-2014, 03:03 PM   #3
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Default Re: Loosing power?

It's the one that came with the cart a factory one.
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Old 12-02-2014, 03:20 PM   #4
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Default Re: Loosing power?

Quote:
Originally Posted by Naturile View Post
It's the one that came with the cart a factory one.
That narrows it down to about a half dozen makes and models.
However, odds are very high, nearly 100%, that it is designed to charge Trojan brand batteries, so it undercharges US Battery brand batteries.

The DPI Accusense has a user selectable charge profile for US Battery and is the best bang for the buck.

Here is a Voltage vs SoC chart for US Battery. The voltage readings are taken 12 hours after the charger shuts off automatically

--------
In addition to the batteries being undercharged, check the cables and connections. If any are getting hot, they need to be repaired/replaced.

Also check the throttle input signal to the controller. J4 Pin-3 (black wire) should be 0.7V to 1.3V when solenoid clicks and 2.5V to 3.3V when pedal is on floor.
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Old 12-02-2014, 03:29 PM   #5
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Default Re: Loosing power?

Oops, you said 1998 sepex drive, that makes it a DCS and I gave the throttle specs for a PDS.

DCS: Pin-1 (white wire) 0.4V to 0.6V pedal up and 1.50V to 1.75V pedal down.
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Old 12-02-2014, 04:22 PM   #6
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Default Re: Loosing power?

When a cart fails to perform a task it previously did routinely I immedeately suspect batteries. I guess that's because previously, I have pulled motors and input shafts looking for more complicated culprits.....only to find pack voltage which looked great at a stand still was dropping like a bomb under load.

A simple voltmeter attached to the battery main (+) and (-) and laid on the seat will tell the tale coming out of the ditch.
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Old 12-03-2014, 01:34 AM   #7
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Default Re: Loosing power?

Quote:
Originally Posted by scottyb View Post
When a cart fails to perform a task it previously did routinely I immedeately suspect batteries. I guess that's because previously, I have pulled motors and input shafts looking for more complicated culprits.....only to find pack voltage which looked great at a stand still was dropping like a bomb under load.

A simple voltmeter attached to the battery main (+) and (-) and laid on the seat will tell the tale coming out of the ditch.
Too true! Cant emphasize that enough some times. Everything "looks great"...
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Old 12-03-2014, 08:06 PM   #8
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Default Re: Loosing power?

Ok guys I will try that tomorrow! Thanks
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