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Lithium Battery Question - 50AH LiFeP04 for a 55# thrust Minn Kota?
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<blockquote data-quote="MrGiggles" data-source="post: 499374" data-attributes="member: 22613"><p>I'm in the same boat, but I already pulled the trigger and am still testing them out.</p><p></p><p>I have a 24V Terrova and two 40ah lithiums. I read the same things you did, that you can essentially go with lithiums that are half the size because you get 100% of available capacity, versus 50-80% with SLA. I had thought this was at least part bullcrap fed to you by someone trying to sell you a battery. What I could never find out was if SLA batteries were rated with that taken into consideration (only discharged to 50%), or if you really only got 50AH out of a 100AH battery.</p><p></p><p>I have not ran the 40s dead yet, although I typically don't run the electric motor at higher speeds for very long. I have installed a hall type battery monitor but have not yet gotten it calibrated, as you have to drain the batteries completely to do so. When it is setup properly, it should track charge and discharge rates over time, showing you how much battery capacity is left. When lithiums are dead, they're dead, so I feel like it would be a very handy thing to have.</p><p></p><p>I purchased two more of those 40ah batteries so I can double the capacity if I needed to, but at this point I'm not sure if I will need to.</p></blockquote><p></p>
[QUOTE="MrGiggles, post: 499374, member: 22613"] I'm in the same boat, but I already pulled the trigger and am still testing them out. I have a 24V Terrova and two 40ah lithiums. I read the same things you did, that you can essentially go with lithiums that are half the size because you get 100% of available capacity, versus 50-80% with SLA. I had thought this was at least part bullcrap fed to you by someone trying to sell you a battery. What I could never find out was if SLA batteries were rated with that taken into consideration (only discharged to 50%), or if you really only got 50AH out of a 100AH battery. I have not ran the 40s dead yet, although I typically don't run the electric motor at higher speeds for very long. I have installed a hall type battery monitor but have not yet gotten it calibrated, as you have to drain the batteries completely to do so. When it is setup properly, it should track charge and discharge rates over time, showing you how much battery capacity is left. When lithiums are dead, they're dead, so I feel like it would be a very handy thing to have. I purchased two more of those 40ah batteries so I can double the capacity if I needed to, but at this point I'm not sure if I will need to. [/QUOTE]
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Lithium Battery Question - 50AH LiFeP04 for a 55# thrust Minn Kota?
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