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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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12-01-2011, 12:04 PM | #11 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: new brushes and epoxy
Quote:
I've heard two versions of this, one with 9/18 holes the other with 18/36, but the message is the same for both. Golf cart batteries have a finite number of discharge/recharge cycles built into them. When you play 9 holes and recharge, you use 1 cycle. If you play 18 holes before you recharge, you use 3 cycles. Basically, the deeper you discharge your batteries before recharging them, the faster you are going to use up the cycles. Personally, I plug in the charger every night whether I driven the cart 10 yards or ten miles and I don't unplug the charger unless I'm going to use the cart. Or, I need to use the AC receptacle the charger is plugged into. My advice is to keep your batteries charged to the highest level practical for your usage. In other words, don't not charge because the battery wasn't discharged down to some arbitrary level. Also, do not put on charge unless there will be enough time for the charger to complete its full charge cycle. Partial charges are better than no charge at all, but always try to let the charger do its thing without interruption. |
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12-01-2011, 01:33 PM | #12 | |
Gone Wild
Join Date: Feb 2011
Posts: 341
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Re: new brushes and epoxy
Quote:
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12-01-2011, 02:37 PM | #13 |
Gone Wild
Join Date: Jul 2011
Location: Houston, TX
Posts: 2,901
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Re: new brushes and epoxy
I'm stealing all of these charts above
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12-01-2011, 02:51 PM | #14 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: new brushes and epoxy
Quote:
Granted, Lester is a battery charger manufacture rather than a battery manufacturer, but here is what they have to say: Note: The use of uppercase for emphasis in the first sentence of paragraph #4 is Lester's not mine. PROPER CARE OF DEEP CYCLE MOTIVE POWER BATTERIES Motive power batteries are subjected to severe deep-cycle duty on a daily basis. Although these batteries are designed to withstand such duty, the following precautions must be observed to obtain good performance and maximum cycle life: CAUTION: ALWAYS WEAR PROTECTIVE EYE SHIELDS AND CLOTHING WHEN WORKING WITH BATTERIES. BATTERIES CONTAIN ACIDS WHICH CAN CAUSE BODILY HARM. DO NOT PUT WRENCHES OR OTHER METAL OBJECTS ACROSS THE BATTERY TERMINAL OR BATTERY TOP. ARCING OR EXPLOSION OF THE BATTERY CAN RESULT. 1. When installing new batteries, be sure the polarity of each battery and overall battery pack is correct. Due to the electrical characteristics of this charger, it is possible to hook up the batteries improperly and not blow the fuse when charging. Battery and/or charger damage can result. 2. New batteries should be given a full charge before their first use because it is difficult to know how long the batteries have been stored. 3. Limit the use of new batteries for the first 20 cycles. New batteries and older batteries that have been in storage are not capable of their rated output until they have been discharged and charged a number of times. 4. DO NOT EXCESSIVELY DISCHARGE THE BATTERIES. Excessive discharge can cause polarity reversal of individual cells resulting in complete failure shortly thereafter. Heavily discharging (over 60%) new batteries before they have been broken in (approximately 20 cycles) can cause permanent cell damage, resulting in reduced energy capacity and shortened life. 5. Maintain the proper electrolyte level by adding water when necessary. Distilled or deionized water is free of contaminants and preferred for this use. Never allow the electrolyte level to fall below the top of the battery plates. Electrolyte levels lower during discharge and rise during charge. Therefore, to prevent the overflow of electrolyte when charging, it is mandatory that water be added to cells AFTER they have been fully charged; do not overfill. Old batteries require more frequent additions of water than do new batteries. 6. Hard crystalline sulfates form when batteries in storage are not maintained in a charged active state. Internal self-discharge can bring about the start of this condition in as little as three days in warm temperatures. Batteries allowed to sit unmaintained in storage will self-discharge, sulfate to various degrees and lose capacity. Repeated charging without using the batteries between charges can recover some of the lost power, range, and life, but some permanent loss should be expected. 7. When the temperature falls below 65°F, the batteries should be placed on charge as soon after use as possible. Cold batteries require more time to fully recharge. 8. The tops of the batteries and battery hold-downs must be kept clean and dry at all times to prevent excessive self-discharge and flow of current between the battery posts and frame. Electrolyte spilled on the batteries never dries or evaporates. 9. All connections to batteries that are bolted must be maintained clean and tight. Due to heating and vibration, bolted connections may loosen over time. Re-tighten the connections twice yearly to the manufacturer's specified torque. 10. Follow all operating instructions, cautions, and warnings as specified in this manual, on the charger, and in your vehicle owner’s manual. Paragraph # 3 states that battery use should be limited for first 20 Cycles rather than deeply discharged as you suggest. This is also emphasized in paragraph #4 and specifically stated that discharges of 60% and greater during break-in can permanently damage batteries. For what it is worth, the Battery voltage chart you posted is in State of Charge (which is commonly used around here), while the life expectancy chart is in Percent Discharge (which is less commonly used here). (That is why I changed the one Scotty has on his website) Never, ever, take your batteries below 50%. There can be no confusion on that number since it is the same on both SoC and Percent Discharge scale. |
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12-01-2011, 03:10 PM | #15 |
Not Yet Wild
Join Date: Oct 2011
Posts: 64
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Re: new brushes and epoxy
these two conflicting posts are exactly what I mean. I appreciate both of you, and still dont know what the best answer is? Right now I am using the cart minimally and charging it when done. Hopefully I am not hurting the life of my new batteries. I appreciate the time it takes to do the charts, just not sure which is right?
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12-01-2011, 03:29 PM | #16 |
Gone Wild
Join Date: Jul 2011
Location: Houston, TX
Posts: 2,901
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Re: new brushes and epoxy
Nutterbug I will pm you with the answer you should take so no conflict is caused here.
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12-01-2011, 03:55 PM | #17 |
Not Yet Wild
Join Date: Oct 2011
Posts: 64
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Re: new brushes and epoxy
thanks colt.
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12-01-2011, 03:57 PM | #18 |
Gone Wild
Join Date: Jul 2011
Location: Houston, TX
Posts: 2,901
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Re: new brushes and epoxy
Yes sir. Just figured I would ease your brain a little.
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12-01-2011, 03:57 PM | #19 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: new brushes and epoxy
Quote:
The original, as posted by LGC, is in Depth of Discharge, which is a unit of measurement less commonly used here. The one I posted is in State of Charge, which is the reciprocal and more commonly used here. We typically want to know how much energy is left in our batteries rather than how much we have used. It is like a pint jar with 12 ounces of water in it. Is it a quarter (25%) empty or three quarters (75%) full. (IE: 25% DoD = 75% SoC) When reading battery care articles, one has to be very aware of what unit of measurement the author is using or implying, else what he/she is trying to convey might come out backwards. |
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12-02-2011, 11:36 AM | #20 |
Not Yet Wild
Join Date: Oct 2011
Posts: 64
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Re: new brushes and epoxy
thanks guys! I appreciate it. im going to upgrade the controller after christmas and see how that helps. Continue charging it when done.
thanks |
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