Genuine Ford Excursion Car Batteries

Ford Excursion Car Batteries Parts Questions & Answers

• Battery
  BXT-65-750
  Q: How to accurately test a battery?

  A: A battery must be near a full charge to test it accurately. First, disconnect the negative Battery Cable. Visually inspect the indicator eye on the battery, if available. Charge the battery if the indicator is dark. If the battery has removable caps, check the electrolyte level; it should be above the plates. Use distilled water if the level is low, but avoid overfilling. For a precise measurement, use a battery hydrometer to draw and test the electrolyte's specific gravity, ensuring it's approximately 1.270 at 68°F (20°C). If the specific gravity is low, charge the battery. Next, use a digital voltmeter for an open circuit voltage test. The battery should display over 12.5 volts; if not, charge it. For the battery load test, use a load tester from auto parts stores. Install the tester onto the battery terminals and follow the manufacturer's guidelines, ensuring the voltage doesn't drop below 9.6 volts during a 15-second load. Cold temperatures might lower the voltage requirements, so adjust accordingly. For the battery drain test, ensure all accessories are off and connect a digital ammeter between the negative cable and post. A drain of up to 100 milliamps is normal, but 500 milliamps or more suggests a problem. If an issue arises, identify the problematic circuit by removing fuses one by one.For replacement, begin by disconnecting the negative battery cable(s). On single battery systems, detach the negative cable from the battery post and keep it isolated. On dual battery systems, start with the auxiliary battery's negative cable and then the main battery's negative cable, ensuring they remain isolated. Remove the positive cable from its post next. Then, unfasten the battery hold-down clamp bolts. Lift out the battery with caution due to its weight. Battery handlers or straps are recommended for assistance. Check the battery tray for corrosion and clean it with a baking soda-water mixture if needed, then dry thoroughly. If replacing the battery, ensure the new one matches the original in specifications. When reinstalling, align the battery foot's center notch with the tray's cut-out, secure the hold-down clamp nuts without overtightening. Reconnect the cables and coat the connections with petroleum jelly or grease to prevent corrosion.