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Fred from Canada

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  2. Kayak Trolling Motor Battery

    Fred from Canada replied to drakesndrum's topic in Marine Electronics
    Hi everyone. Purchase a 80Ah LFP battery from amazon. They have come down in price so that they are around 2x the price of lead acid. I am an engineer so I was skeptical of the claims made about the LFP batteries so I ran several experiments. 80Ah LFP produced 1040 Watt hrs + Weighs 25lbs I tested 2 group 31 marine 105 Ah deep cycle batteries to compare. 1 battery was 6 years old and the other 1 year old. I take good care of them. #1 - 6yr old 105 Ah Lead acid = 680 Wh #2 - 1yr old 105 Ah Lead Acid = 800 Wh. If you wanted the same capacity from a LFP battery you could use a 60Ah. The 80Ah has a better price point. Fred

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