Lead-Acid Batteries

Voltage and Specific Gravity vs. State of Charge - SOC

Acid specific gravity and charge level in a lead acid battery:

Download and print Lead Acid Battery State of Charge chart

• overcharged for specific gravity above 1.30
• very low capacity for specific gravity ranging 1.13 - 1.15
• discharged for specific gravity below 1.12

Battery Efficiency vs. Temperature

Temperature and lead-acid battery efficiency:

Specific Gravity vs. Temperature

Specific gravity in a fully charged lead acid battery vs. temperature:

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