BATTERY State of Charge SC1 By Vance Bloom Objective Student will determine the “State of Charge” of a battery using the “Voltage Method” and document.

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Presentation transcript:

BATTERY State of Charge SC1 By Vance Bloom

Objective Student will determine the “State of Charge” of a battery using the “Voltage Method” and document results. Student will also be aware of two other methods of determining “State of Charge”. Remember, this test does not tell you if the battery is good or bad, only how fully the battery is charged. Just How Much Power is in That Battery?

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

Procedure

WEAR EYE PROTECTION!

Voltage Method Determine battery voltage (Use 20 Volt DC Scale) Write It Down!

RESULTS Record Battery Voltage Measured & Estimate % of Charge Using Chart Below Fill in voltage chart on skill sheet or Lower…………………0% Charge ………………………………….25% Charge ………………………………….50% Charge ………………………………….75% Charge or Higher …………….100% Charge

SPECIFIC GRAVITY METHOD (When applicable) SPECIFIC GRAVITY REFERENCE CHART Red Water (dead) White Recharge Green Full Charge IF READINGS VARY BY MORE THAN REPLACE BATTERY

BATTERY EYE METHOD (When applicable) Observe the color of the indicator (EYE) and record the result: __________ GGGGreen or Blue = percent charge. TT he battery is adequately charged for further testing. DD ark or Black = 0-65 percent charge. TT he battery is NOT ADEQUATELY cc harged and must be charged. Yellow, Clear, or B BB Bright COLOR = Battery must be replaced.

SPECIFIC GRAVITY METHOD (When the battery has removable caps) Specific Gravity Tester Red means “Dead” White means “Charge” Green means “Full”

SPECIFIC GRAVITY METHOD (When applicable) Specific Gravity Tester Drawbacks 1. Easily Broken (Glass) 2. Messy, Gets Acid all over 3. Some Batteries do not have access to acid (sealed caps) access to acid (sealed caps)

Recommendations? Does the Battery need to be Charged? Does the Battery need to be Charged? How much charge was in it? Does anything need to be done? (Cleaning, Water Added, ETC…) Record Your Recommendations On Your Skill Sheet!

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

THE END