If you’re noticing reduced operating times on your golf car’s deep-cycle batteries, even after they’ve been through a full charge cycle, it could be a result of improper charging. Undercharged batteries are a common problem and often stem from not knowing their condition prior to charging. This is most often a result of rushing to get the vehicles back into service before they’re fully charged. There are ways, however, to ensure your batteries are getting a full charge every single time, which can extend battery life and operating time.
Create a Pre-Charging Checklist
- Make sure the golf car ignition key is in the “off” position. This removes any load on the batteries.
- Make sure you are using proper safety equipment and work in a well ventilated area. This includes using safety glasses and gloves.
- Examine the batteries and make sure the terminals are clean and the wires are properly connected to the terminals with the appropriate torque (~100 in-lb). Remove any corrosion with a 50/50 solution of baking soda and water, while using a wire brush with a wooden or plastic handle to clean around the terminals and connections.
- A very important step is to check the electrolyte level of the battery cells and ONLY add water if the tops of the cells are not covered. If needed, add just enough distilled water to cover the cell plates.
Follow A Strict Charging Regiment:
- Always charge your batteries as soon as possible and try to limit the depth of discharge to 50 percent for best life. This will increase the number of cycles your batteries can handle, and extend battery life. If you can’t keep track of the depth of discharge, you can’t go wrong by always charging the batteries after every use.
- Connect the charger to the battery or battery pack and allow it to go through a complete charge cycle until it shuts off.
- Check the state-of-charge (SOC) of the battery pack by using a hydrometer to measure the specific gravity readings. A fully charged battery usually has a specific gravity reading close to 1.275, but check with the battery manufacturer for this specific full charge reading.
- If the charger turns off before the batteries are fully charged, unplug and restart the charger. If it continues to turn off before the batteries are fully charged, consult the golf car or charger manufacturer for corrective actions.
- If the charger is working properly, it’s always a good idea to perform an equalizing charge at least once a month. This will cause the electrolyte to gas (bubble) and reduce the chance of stratification, which can lower battery life.
- Check the electrolyte levels on each battery after charging and add distilled water using a watering pitcher or with a single point watering system. Check with your battery manufacturer to determine the correct levels.
These basic steps will ensure your batteries are getting the maximum performance and life. It is important to also regularly check your charger to make sure it’s working properly, and keep it stored in an area where it won’t get damaged. To find additional resources on charger diagnostics, battery maintenance and ways to increase battery efficiency and service life, visit U.S. Battery’s website at www.usbattery.com.
