letsgetem wrote: Its a 90hp Mercury 4 stroke. The battery is 530cca 52AH. |
Steps wrote: As stated, Those are not the 'marketing' BS numbers.. they are from the page in the BRP Installation and Repair Manual...for technicians. Battery spec from the specs pages and the alternator specs from the testing /specs pages |
letsgetem wrote: Ok, Im probably stupid. There Ive confessed. I thought my boat battery was losing charge between trips with the motor charging. But - I was reading battery voltage on my sonar screen. I have now taken battery voltage with a multi-meter directly on the battery (terminals). It shows- Battery voltage, With everything incl sonar off 12.82v With sonar on 12.61v With sonar on, voltage into sonar 12.5-12.6v And, the battery voltage is NOT going down - over 5 days it stayed at 12.82v. This is the voltage after a trip charging the motor. I dont know why the voltage on the sonar screen varies (when battery voltage is constant), but it doesnt matter. It was an interesting discussion, and thank you for your input. |
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