How to Know When an Open Battery is Charged: Tips to Check Charge Levels
To check if an open battery is charged, use a voltmeter. A reading of 12.6 to 12.7 volts shows a full charge. A voltage of 12.2 volts indicates a low charge. If it reads 12 volts, the battery is dead. Measure the battery voltage regularly to monitor its state and ensure proper functioning. Another method … Read more