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The battery would need to meet Mercury's specs because I'll be using it to start/run my Mercury PROXS 200 4s. I'll also run all accessories off this battery including my two Lowrance HDS 9" and a Lowrance HDS Live 12" with ActiveTarget 2.
What size (capacity) Lithium Ion battery would provide me with ample capacity to run these all day long, dawn to dusk? Most of the time I fish, I'd never need it for this long but I would for occasional fishing trips.
I believe MillerTech sells a battery which meets the Merc specs. Most starting batteries are above 100Ah, which should cover you.
to determine your electronics load, this video can help with that
What's the BEST Battery Size For YOUR Fish Finders?| Livescope | Garmin | Humminbird | Lowrance
https://youtu.be/Vz5XdDJGNm0
On the size, you just need to do a little math. Add up the Amp Rating on all your electronics and multtiply that by the number of hours you want. That will get you in the ballpark of the total Amp Hours needed. Not sure what other Accessorries you will be running, nor the Amp draw, but go up from what you calculated to provide a buffer. Also, your motor will charge the battery when running, but how beneficial that will be depends on how much the motor is running vs stopped while fishing.
I went with 120 AH All Purpose batteries from Impulse Lithium, a board sponsor. They also have a 160 AH as well. These batteries are designed for starting and electronics.
Millertech 100 would get the job done but the 135 would last for days
Ionic 125ah great price, work great and great customer service.
we have a few options and great prices, happy to discuss your setup with you , give us a call tomorrow 910-722-0001 or feel free to text or PM anytime after hours
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