how to charge 2 batteries in a captiva 192

rkinross · May 17

My boat mechenic told me I did not have to remove the batteries and keep them on a charger as I have always done in the past. When I go to raise the stern drive to keep it higher the batteries do not seem strong enough to raise it. I have a battery charger that worked for the past two years on these batteries. The boat has a selection switch to select the batteries or a setting for both. Do I have to charge each battery one at a time or is there a way to charge both batteries at once if the selection switch is set to both. I was thinking on placing the positive clamp from the charger on battery one and the negative clamp on battery 2.

Rich_ · May 23

https://bakesonline.com/products/promariner-prosport-12-amp-gen3-on-board-dual-bank-battery-charger-1-1-1?variant=40905826926672&gad_source=1&gad_campaignid=10062865819&gbraid=0AAAAADvhVNKphhAphYElJNc_rMvfT2T1M&gclid=EAIaIQobChMIrsHmiba5jQMVvkr_AR1ZuBzMEAQYAiABEgKe7_D_BwE

Rich_ · May 23

Something like this

Grahamu · May 23

With your selector switch set to all you have one battery bank, connecting charger as you described will charge both. It will take longer so monitor it. It would be good idea to load test each battery to make sure they do not need replacing.

Cableguy Greg · May 30

If you install an isolator between the alternator and the batteries, both batteries will be charged at all times when the engine is running. I did that on a 232cc that I owned years ago. That way I didn't need to worry about switching between batteries while out and about.

mattie · May 30

Lead Acid batteries go bad pretty quick in boats. 3yrs old prob ok. 5yrs done.
Good rule to follow.
As @Grahamu said above....load test each batt.

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how to charge 2 batteries in a captiva 192

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