Electricians Service Team
License #1034067
Business Address: 11950 San Vicente Blvd Los Angeles, CA 90049
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How long can a 4000mAh battery last?


Albert Smith, Expert of Electricians Service Team

The battery life of a 4000 mAh battery depends on the power consumption of the device it powers. To calculate battery life, divide the battery capacity (4000 mAh) by the device’s current draw (in milliamps). For instance, if a device consumes 800 milliamps per hour (for example a mid-range smartphone or a small tablet), the battery would last approximately 5 hours (4000 mAh / 800 mA = 5 hours). The Electricians Service Team is available for expert support with battery-related inquiries.

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