Genesis Golf Golf Cart Battery Specs Battery Maintenance Information  
Battery Maintenance Information  


- MONTHLY CHECK THE LEVEL IN EVERY CELL AND FILL THE BATTERIES TO THE CORRECT LEVELS AS REQUIRED. The use of a battery-watering gun will assist in accurately completing this task. Water should be added, if needed, after the charging has been completed unless the tops of the internal plates are exposed. In that case, water should be added before charging.

Be sure that a water suitable for watering batteries (colorless, odorless, tasteless, and suitable for drinking), preferably distilled water, is utilized. If you have any doubt as to the suitability of the water, have it tested and add an appropriate water line filter, if required.

It is most important that all battery cells be filled to the correct level in order to obtain good battery life and minimize corrosion to the electrical system and vehicle.


After watering spray the tops and sides of the batteries, the battery wiring and the battery racks with baking soda solution; let the solution stand for at least five minutes to allow the neutralization to take place.

Rinse the entire area with a low- pressure spray of clean water. Do not wash electrical components with direct stream of high pressure water.

If any evidence of corrosion is evident (green powered foam), spray again with baking soda and let the solution stand for at least 5 minutes before rinsing; repeat if required.

Deposits on battery tops must be removed because they are conductive and cause self-discharge of the battery. Scrub the battery tops with a bristle brush soaked in baking soda solution. Rinse with clear water.

Never wash batteries without first neutralizing the entire battery area with a baking soda solution.

CHARGING - DAILY RECHARGE THE BATTERIES AFTER USE. Golf car batteries should be charged between rounds if possible.

Before charging batteries, inspect all termination for frayed conductors and loose or damaged connector. Inspect all termination to assure that they are both clean ( corrosion free ) and securely fastened to battery post.

A fully charged battery will not freeze in winter temperatures.

In the "off season" the batteries should be fully charged, disconnected from the charger and stored in an unheated covered area. Check the batteries during the "off Season" at thirty - day intervals, recharge and disconnect charger after charging. DO NOT leave the charger connected to the vehicle during "off season" storage.

EZ-GO Cars equipped with DCS feature must be stored with the tow/maintenance/run switch in the tow/maintenance position.

Winter Weather -- 
Can Your Batteries Stand the Cold?

by Rick Farris
Manager of Technical Reliability, Club Car, Inc.

It has been my experience that batteries in an electric golf car are often the most misunderstood of all the vehicle’s components.   What makes a battery operate still seems to mystify a good many people whose jobs are to maintain large fleets of electric golf cars. Recharging, watering and cleaning are the fundamentals for proper battery preventive maintenance. An intimate knowledge of battery design and operation isn’t a maintenance prerequisite, but a working understanding of what’s going on the inside of one surely will help. 

Most golf car manufacturers have provided in their maintenance and service manuals and technical training seminars, a basic outline of how lead–acid batteries function.  If you haven’t read your manual or haven’t attended a factory sponsored training class, you need to do so, as soon as possible.

One of the most misunderstood aspects of battery maintenance is cold weather storage.  In many areas of the country where extreme cold weather temperatures prevent winter play, golf cars must be stored until the following season.  In some locations, this can be for up to seven months.  So what needs to be done to prevent the batteries in your golf car fleet from becoming damaged during long periods of storage?  Probably not as much as you might think.

Contrary to what many believe, golf car batteries love cold weather, for storage that is.  I have personally heard stories about golf courses having their mechanic pull out all the batteries in a fleet, place them on pallets and move them into a heated storage facility.  There, all the chargers were brought in, each group of six batteries wired together complete with a charger receptacle, and then charged periodically throughout the remainder of the winter.  Can you imagine the work involved in doing that with an 80 to 100 car fleet?  None of this is necessary! Batteries can be stored while still in their cars and will survive even in subfreezing temperatures if a few simple rules are followed.

Before placing any batteries in a storage situation, understand there is a condition called stand loss discharge (loss of electrolyte specific gravity) that will affect their life span and survivability.  Batteries, without the benefit of frequent recharging, will rapidly self-discharge, especially in warm weather.  The higher the ambient temperature, the higher the degree of self-discharge.  I have included a chart (Stand Loss Capacities) that demonstrates the severity of this situation by showing how quickly batteries stored at various temperatures can go from a fully charged condition to becoming deeply discharged and possibly damaged, often permanently. Notice that batteries stored at a temperature of 42°F (6°C) display much less stand loss discharge than the other two examples shown at higher temperatures.  Even after 19 weeks, the batteries are at approximately 1.245 specific gravity, well above the sulfation threshold of 1.220.  This means the lower the storage temperature, the less the batteries will self-discharge. And the lower the temperature, the better. Even at 0°F (-18°C), batteries will maintain their charge for an extended period of time.  Of course, this is all predicated on the batteries being clean, in good condition, and being fully charged prior to being placed into storage.  These conditions are imperative, and they are the keys to successful winter storage.  Unless your fleet is equipped with a charging system that will automatically turn on and assess battery condition and perform a periodic “maintenance charge,” I highly recommend you disconnect the battery pack wiring after the full charge prior to storage if the chargers are not going to be used.  I would also advise you to inspect the batteries monthly, taking sample specific gravity readings and checking chargers and circuit breakers if the chargers are to be used during storage, just to be sure there are no problems.

There is always concern that batteries will freeze during cold weather storage.  They certainly can and will unless a sufficient charge is maintained.  Take note of the charts listing temperatures at which batteries can freeze (Electrolyte Freezing Point @ Various States of Charge).  As long as the proper specific gravity (state of charge) is maintained, batteries will not freeze.  If you compare stand loss discharge at the temperature ranges listed, you’ll see batteries stored at temperatures even well below 0°F (-18°C) will maintain their state of charge for an extended period as long as the temperature remains at that level.

See, that wasn’t so difficult, was it?  Now when someone asks if your batteries are ready for cold weather, you’ll know the answer.

Q If my batteries do go dead from storage, what do I do?
A — Due to a safety circuit in most chargers, the charger will not turn on if the pack voltage is lower than 25-30 volts on a 48 volt car (about 40 volts for a 72 volts car). Turn off disconnect or remove 36/48 GND, and charge each battery individually with a 12 volt automotive type charger. Use a medium current (10-40 Amps) for about 30 minutes to 1 hour per battery. Once the pack voltage is high enough, turn on disconnect and plug in charger.

Marine/RV Battery FAQs

ANSWER 1: A deep cycle battery is designed to withstand hundreds of deep discharges and recharges over its lifetime. The term "deep", in this situation, refers to the amount or depth of discharge (in percent of total battery capacity) the battery can repeatedly withstand. The term "cycle" refers to one discharge and recharge of the battery of any depth. Therefore, a deep cycle battery can be discharged to a high percent of its total capacity repeatedly. back to top

Automotive Starting Batteries
The primary difference between deep cycle and automotive starting batteries originates at the manufacturing level. As an example, a starting battery is manufactured with thinner plates and less dense chemical active material than a deep cycle. Thinner plate construction allows an increased amount of plates per individual cell subsequently permitting an increased CCA (Cold Cranking Amps) rating capability. This is primarily due to an automotive starting battery being utilized to produce short burst of high rate current (in amps) to start a vehicle’s engine. Because this burst of energy is such a short duration, typically 10-15 seconds, the total amount of battery discharge (in percent of total capacity) is considered shallow. An automotive starting battery, as a result of internal construction, can withstand thousands of shallow starting cycles over the period of its life but only a minimal number of deep cycles.

Deep Cycle Batteries
Deep cycle batteries, as the name indicates, are designed specifically to endure repetitively deep discharges. To withstand the repeated deep cycles, the battery is manufactured with thicker plates combined with a denser chemical active material. These batteries can be utilized to provide extended operation for electrical accessories in vehicles including boats, motor homes, Rvs and campers.
Back to top

ANSWER 3: MCA (Marine Cranking Amps) is the discharge load in amperes that a new, fully charged battery at 32ºF can continuously deliver for 30 seconds while maintaining a terminal voltage equal to or higher than 1.20 volts per cell. This is a more recently used method for rating the starting power of marine/RV batteries. MCA is always greater for a battery than its CCA, and both should be displayed on the battery.

CCA (Cold Cranking Amps) is the discharge load in amperes that a new, full-charged battery at 0ºF can continuously deliver for 30 seconds while maintaining a terminal voltage equal to or higher than 1.20 volts per cell. This is the most commonly used method for rating the starting power of automobile batteries.
Back to top

ANSWER 4: The ampere hours (Ah) rating is important when determining the type and amount of batteries needed to meet your specific component loads. An approximate Ah rating can be attained by multiplying the battery's RC (reserve capacity) rating by 0.6 for median-sized batteries. For example, 180 RC x 0.6 = 108 Ah. Back to top

ANSWER 5: Here are some tips to avoid common mistakes:

1) Check the state of charge of your deep cycle battery before using or storing it. This may be done using a hydrometer or a voltmeter.

2) Prior to recharge, check the electrolyte levels in each cell by carefully removing the vent caps and ensuring that the electrolyte level is minimally 1/4 inch above the plates on all cells. Allowing the electrolyte levels to become too low or too high can cause a reduction of the battery’s capacity or spillage.

3) If the electrolyte level is too low, add water to the battery. Always use distilled water to avoid damage to the battery from impurities.

4) Check with the manufacturer for details and recommendations before charging a sealed, maintenance-free battery.

5) Recharging should only be done in a well-ventilated area.

6) Recharge your battery as soon as possible after you have finished using it.

7) After recharge, recheck the electrolyte level. If needed, fill to 1/8 inch below the bottom of the filler tube vent well.
Back to top

ANSWER 6: A marine/RV deep cycle battery does not require a deep discharge at any time in its service life. For best results, we recommend that you discharge shallowly or moderately for the first five to 10 cycles. In order to optimize performance of a marine/RV battery, it is recommended that the battery level not be lower than 50% capacity. Repeatedly discharging more deeply than 50% of capacity may cause a decrease in cycle life and performance. Back to top

ANSWER 7: Overcharging a deep cycle battery occurs when the total capacity removed has been replaced by recharging and the battery remains on charge. This overcharging creates excessive heat, which may cause the plates within the cells to buckle and shed their active material, shortening battery life. The battery will react to the overcharge by producing an excessive amount of hydrogen and oxygen. These gases are formed when water molecules within the electrolyte are broken down. The water that has been displaced by overcharging can be replaced in a serviceable, unsealed battery. In a maintenance-free, sealed battery, however, no water can be added. Back to top

ANSWER 8: The maximum performance and service life will depend upon maintenance, recharging and the amount of use the battery receives. Batteries that are rated in cycle life should deliver that number of cycles prior to dropping to 60% of its original capacity. (A cycle is one discharge and recharge.) However, this may not apply if the battery is stored for a long period of time or is not properly maintained. Back to top

ANSWER 9: You should look for a high-quality battery with sufficient capacity to operate all of your electrical equipment. Most boats, trolling motors and electronic equipment are stamped with an amp requirement. To determine which type of battery you need:

1) Determine the sum of your total power requirements in amps;

2) Determine the sum of your approximate usage time in hours;

3) Multiply hours and amps to get number of ampere hours (Ah); and

4) Divide total ampere hours by 0.50 (50% DOD) to maximize battery cycle life.

If you have more questions about deep cycle batteries, ask an Interstate marine/RV battery dealer. Your dealer will help you find a dependable marine/RV battery with plenty of power to cover all of your desired applications. Call 1-212-758-2222 for the marine/RV battery dealer.
Back to top

Sealed Lead Acid Battery FAQs

ANSWER 1: A sealed lead acid battery is a rechargeable battery which recombines suppressed gases, thus eliminating the need to add water. Since they are tightly sealed, these batteries will not leak and can be installed in certain applications where 'wet' batteries could not be installed. Back to top

ANSWER 2: Two methods are used to seal batteries by a process of immobilizing the electrolyte, which in turn eliminates free-flowing acid. Both these methods are "valve regulated," an added safety feature during harsh operating conditions.

1) Gel Cell: Silica gel is added to the electrolyte, causing it to 'set' in gelatin form.

2) Absorbed Glass Mat (AGM): Highly absorbent glass mat separators are used between each plate to retain the liquid electrolyte.
Back to top

ANSWER 3: Yes. Sealed batteries have unique charging characteristics. Because water cannot be added, they are less tolerant of overcharging. Here are two important tips to remember:

1) Do not use a 'maintenance free' setting if shown on a charger. Also, do not allow the on-charge voltage to exceed 14.8V for 12V batteries, 9.9V for 8V batteries or 7.4V for 6V batteries.

2) The maximum charge rate in amperes should not exceed the battery's capacity at the 20-hour rate divided by three. For example, the battery model PC12180NB has a capacity of 18 ampere hours; therefore, the maximum charge rate allowed is 18 divided by three, or six amperes.
Back to top

ANSWER 4: Interstate's sealed lead acid batteries:

1) are maintenance free. There is no need to check liquid levels or perform other routine maintenance.

2) are rechargeable. When charged correctly, they are capable of several hundred charge/discharge cycles. If only a small portion of the capacity is removed on each cycle, the number of possible cycles increases proportionately.

3) have an extended shelf life. The self-discharge rate is only 2-3% per month at 77° F.

4) have a wide operating temperature range. They will operate from -76° F to +140° F when fully charged. Capacity increases above and decreases below 77° F.

5) have no memory. They provide fully rated power on demand, irrespective of previous usage patterns.

6) utilize endurance-tested calcium grids to extend service life under demanding conditions.
Back to top

ANSWER 5: They are used in a wide variety of applications including toys, electric fences, radio and TV communications, highway safety lights, alarm systems, computer back-up power supply systems, etc. back to top

ANSWER 6: Interstate's sealed lead acid battery line ranges from less than two inches to more than 20 inches in length, and power availability ranges from 1.0 Ah to more than 170 Ah. Back to top

ANSWER 7: Both deep cycle and high current discharge batteries are available in the sealed lead acid line. Back to top
DISCLAIMER: The above information is provided to the public freely, any and all procedures should be done by trained authorized personnel.