FOR GOLF CARS
Proper regular maintenance can make a huge difference to the performance and life of any lead-acid battery.
Typically, the deep-cycle batteries used on golf cars are of the flooded cell type with removable caps, allowing the electrolyte in each cell to be topped up from time to time. Over a period of time the electrolyte level will reduce due to gassing that occurs during the charging process. Spillage during golf car use should not be significant unless the cells are overfilled.
- Check the electrolyte level in every cell, and top up with distilled water if necessary:
- top up to halfway between the plates and the bottom of the filler hole (see diagram below).
Diagram of a battery cell showing the plates, filler hole and electrolyte level
the top of the plates can be seen
midway between plates & filler hole
electrolyte touching the filler hole
- Check that all vent caps are tightly in place.
- If the batteries are dirty, or are wet after charging:
- clean the batteries with tap water, using an old cloth or by gently brushing.
- adding a little baking soda to the water is a good idea.
- allow to dry, then apply a tiny amount of Vaseline or motorcycle chain grease to the battery terminals.
- Do not use a high-pressure hose.
- Avoid splashing water on electronic units (e.g. the EZGO control unit).
- Do not overfill the cells when adding water.
- Never add tap water to the cells.
- Never, ever, add acid to the cells.
- First perform the weekly maintenance schedule (see above).
- Inspect all the cable connections for corrosion (white, yellow or green deposits around the terminals).
- if found, clean then coat terminal and cable lug with a tiny amount of Vaseline or motorcycle chain grease.
- Inspect all the cable connections for overheating (copper colouration).
- this is usually due to a loose connection - see below.
- Check all the battery cables for loose connections:
- check cable lug is not loose on the cable: replace lug or cable if necessary.
- check battery terminal is tightened correctly.
- Do not over-tighten battery terminal nuts
- Golf car deep-cycle batteries: typically do not exceed 120 lb-in, 14 N-m, 1.4 kg-m.
- Automotive clamp terminals: typically do not exceed 70 lb-in, 8 N-m, 0.8 kg-m.