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A while back I did a video on charging a 24V bank of batteries (i.e., 2 x 12V batteries connected in series to make 24V) from your outboards 12V alternator using a Yandina Trollbridge. That video can be viewed here:

[ Ссылка ]

That system is perfect when you have 2 x 12V batteries (either AGM or Lithium) but it won’t work if you have a single 24V battery because it relies on being able to automatically switch the batteries between a serial and parallel connection depending in if the trolling motor is in use (series) or the batteries are being changed (parallel).

With a single 24V Lithium battery I needed a different solution, and this is what I came up with. It has done half a dozen charge cycles at the time of writing as is working flawlessly.

As well as allowing me to charge my trolling battery while moving between fishing spots I can also use my 12V charger at home to charge the 24V battery, saving me from having to buy a dedicated 24V lithium battery charger.

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Buy a Victron 12/24 V charger:
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eBay: [ Ссылка ]

There are both 10A and 15A models listed,
choose the correct one for your outboard.
Remember, these are output amperages,
the input amperage will be double.
More detail in the video.

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