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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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12-24-2012, 09:39 AM | #11 |
Not Yet Wild
Join Date: Dec 2012
Posts: 14
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Re: Is this run time normal?
Yes, thanks JohnnieB, great explanation and I will do just that when I get back up to the farm. So one battery out of tolerance will drag the whole pack down? Man I'm getting a quick education on these electric carts. You guys are a wealth of knowledge and I appreciate your replies.
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12-24-2012, 09:42 AM | #12 | |
Not Yet Wild
Join Date: Oct 2012
Location: Hernando
Posts: 54
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Re: Is this run time normal?
Quote:
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12-24-2012, 10:00 AM | #13 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Is this run time normal?
Yep, one battery will drag the whole pack down.
If fact, one cell will drag it down and you've got 18 two volt cells. They just happen to be packed three in a box. -------------- Your cart has two problems and both need to be addressed, but I lean towards fixing the F/R and cable issues first because they are a safety issue in addition to being a performance issue. (IE: Start a fire) If the batteries all drop to about the same voltage, you might get a little improvement out of them by charging the living daylight out of them. Put them on charge repeatedly even though they haven't been discharged any. If you find a couple that are lower than the rest after use, but not 2.0V or more, which indicates a bad cell, try repeatedly charging them with a 6V charger on in pairs with a 12V charger. However, I'm inclined to believe you have a bad battery or two. Of course it is best to replace all batteries at the same time, but if you can find some used ones about the same age and condition as the rest of the pack, you might get a couple more years out of what you've got. If you do replace the bad one(s) with new, the new batteries will quickly age to the level of the others in the pack and will have to be replaced at the same time as the rest. |
01-05-2013, 11:35 AM | #14 |
Not Yet Wild
Join Date: Dec 2012
Posts: 14
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Re: Is this run time normal?
Thought I would post an update to my post. The F&R switch was toast , burnt toast. I replaced it with a heavy duty one and installed 4ga cable throughout . Charged the pack and after 12 hours got 38 at the pack. Drove all around the woods and up some good hills. Performance was vastly improved and no burnt electrical smells ! Came back and let it rest about 15 minutes and got the following readings :
36.6 pack Bat 1- 6.14 Bat 2- 6.05 Bat 3- 6.14 Bat 4- 6.13 Bat 5- 6.11 Bat 6- 6.13 Battery 2 is not quite up to par with the others, but is within 0.1 . Do these batteries appear good with the numbers I posted? If so, the switch and old cables were killing the cart's performance big time. |
01-05-2013, 02:25 PM | #15 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Is this run time normal?
If you can lay your hands on a 6V charger, you might try giving battery #2 a couple overnight charges while the others rested.
Other than that, the batteries appear to be in pretty good shape, and even Battery #2 isn't far off the mark. Glad to hear just replacing the F/R and cables took care of the problem. |
01-05-2013, 03:12 PM | #16 |
Not Yet Wild
Join Date: Dec 2012
Posts: 14
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Re: Is this run time normal?
Here is the switch. Guess that's what a lift, big tires and not upgrading the electrical components will give ya. Gonna hit Scotty up for a controller and solinoid next
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01-05-2013, 05:16 PM | #17 |
Not Yet Wild
Join Date: Dec 2012
Posts: 14
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Re: Is this run time normal?
This **** thing is killing me. Ran fine all morning. Put it on charge then tried to go this afternoon and nothing.. No click, nothing?? Any ideas ?
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01-05-2013, 05:33 PM | #18 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Is this run time normal?
Here is a schematic of a series cart with the solenoid activation circuit traced.
Since you had it on charge, I'd check for battery voltage on the smaller white wire coming out of the cart's charge receptacles. |
01-05-2013, 05:41 PM | #19 |
Not Yet Wild
Join Date: Dec 2012
Posts: 14
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Re: Is this run time normal?
How do I check that voltage? Ur schematic may say, but I'm on a iPhone and can't read it too well.
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01-06-2013, 05:57 AM | #20 |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Is this run time normal?
DVM's negative test lead on the battery pack's main negative terminal,
Separate the in-line push-on connection between the small white wire from the receptacle and the red wire that goes into the wiring harness. Measure the voltage on the small white wire with the positive test lead. |
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