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Load Testing a Battery

Load Testing a Battery. SC4B. By Vance Bloom. Objective. Student will determine the state of charge of a battery and load test a battery in or out of the vehicle. Do you need to buy a new battery?. MATERIALS REQUIRED. 1. EYE PROTECTION 2. VOLT-OHM-METER 3. BATTERY LOAD TESTER

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Load Testing a Battery

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  1. Load Testing a Battery SC4B By Vance Bloom

  2. Objective • Student will determine the • state of charge of a battery • and load test a battery • in or out of the vehicle. • Do you need to buy a new battery?

  3. MATERIALS REQUIRED 1. EYE PROTECTION 2. VOLT-OHM-METER 3. BATTERY LOAD TESTER 4. BATTERY

  4. Procedure

  5. CAUTION! Never Make Sparks or Flame by Battery The Hydrogen Gas Given Off by the Battery is Explosive!

  6. STEP 1 WEAR EYE PROTECTION!

  7. STEP 2 Determine battery voltage (Use 20 Volt DC Scale) Write It Down!

  8. STEP 3 Determine State of Charge Record Battery Voltage & Estimate Percentage of Charge & Record 11.7 or Lower…………………0% Charge 12.0 ………………………………….25% Charge 12.2 ………………………………….50% Charge 12.4 ………………………………….75% Charge 12.6 or Higher …………….100% Charge IF BATTERY VOLTAGE IS BELOW 12.4 VOLTS, BATTERY MUST BE CHARGED TO PROCEED! IF BATTERY VOLTAGE IS ABOVE 12.4 VOLTS, YOU MAY PROCEED WITH TEST!

  9. STEP 4 Hook Up Battery Load Tester Red to Positive(+) Black to Negative -

  10. STEP 5 Load Test Battery for 10 Seconds Note Voltage Reading @ 10 Seconds While Still Pressing the Button !

  11. STEP 6 Results IF LOADED TEST VOLTAGE IS ABOVE 9.6 VOLTS BATTERY PASSES TEST IF LOADED TEST VOLTAGE IS BELOW 9.6 VOLTS BATTERY FAILS TEST

  12. NOW, CLEAN UP! CLEAN, SHUT OFF & PUT AWAY VOLT-OHM-METER AND BATTERY TESTER FILL OUT YOUR SKILL SHEET COMPLETELY & GET IT SIGNED!

  13. QUESTIONS? CONTACT VANCE BLOOM @ 1-909-696-1081 vbloom@murrieta.k12.ca.us

  14. THE END

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