Firstly, ensure the battery connections are secure and properly tightened. Loose connections can cause intermittent power issues. Next, check the battery voltage with a multimeter to verify if it’s within the expected range for a fully charged battery (around 12.8 to 13.2 volts for a 12V battery). If the voltage is significantly lower, it might indicate a charging problem or a defective battery. Additionally, inspect the battery terminals for any signs of corrosion or damage, as these can also affect performance. If everything appears normal, consider testing the battery with a load tester to assess its capacity under load conditions. If the battery fails any of these tests, it may need replacement. Remember to always follow safety protocols when handling batteries.