Boat Maintenance: Dual battery use question
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Name:   Pontoonfisher The author of this post is registered as a member - Email Member
Subject:   Dual battery use question
Date:   2/28/2020 8:29:19 AM

Your 70HP outboard does not have enough auxiliary capacity to keep your batteries fully charged especially if your running the radio and other devices while running.   You would probably need to run the boat for 10 hours to fully charge both batteries that are at half of their capacity.   You need to be leaving the dock with fully charged batteries from an on board charger.  

Also, best practice is to only use the both position in emergencies.  Running in the both position can hide a battery issue   

 

Other messages in this thread:View Entire Thread
Dual battery use question - sagetek1 - 2/21/2020 12:24:16 AM
     Dual battery use question - wix - 2/21/2020 8:28:57 PM
          Dual battery use question - sagetek1 - 2/21/2020 8:52:18 PM
               Dual battery use question - Shortbus - 2/24/2020 11:27:35 PM
                    Dual battery use question - F1Fan - 2/25/2020 11:27:41 AM
                         Dual battery use question - sagetek1 - 2/25/2020 1:27:00 PM
     Dual battery use question - Pontoonfisher - 2/28/2020 8:29:19 AM
     lithium batteries for the boat - John C - 5/11/2020 7:41:15 PM
          Made me look..... - MartiniMan - 6/1/2020 5:02:30 PM
               Made me look..... - GoneFishin - 6/1/2020 7:59:00 PM
                    Better....but not good enough...... - MartiniMan - 6/4/2020 12:59:06 PM
                         Better....but not good enough...... - John C - 6/11/2020 3:04:23 PM
                         Why lithium? - wix - 6/11/2020 9:36:35 PM
                              Why lithium? - John C - 7/6/2020 4:57:51 PM





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