The INTELLIGENT Battery Charger series feature a 'charge isolated switch-mode charging circuit' for charging lead-acid batteries that is highly efficient. The purpose is to charge a 12V/18~250A/h battery as quickly and safely as possible to the highest practically attainable capacity, and maintain this capacity indefinitely. During charging there is a current meter or LED indicating that the unit is charging. There are 3 stages in charging: 1. Detecting stage - detects the 'at rest' state of the battery. 2. Constant Current - charging the battery at highest capacity until charged to 80%. 3. Constant Voltage - supplies a constant voltage of 14.7 V to the battery and continues to do this for a maximum of six hours. During this time the current will reduce gradually until the battery is fully charged.
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