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11-02-2013, 08:31 AM | #1 |
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What's that 12v battery you have all be raving about?
Thanks guys! |
11-02-2013, 09:15 AM | #2 |
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11-02-2013, 09:47 AM | #3 | |
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11-02-2013, 10:10 AM | #4 |
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The group buy I think you are referring to was for Lifepo4. If I remember correctly it was Greg Andrew that was the point of contact. Hit him up or Jorge.
see Jorges post here #18 http://www.bigwatersedge.com/bwevb/s...ighlight=solar Have you been out to NPH lately?
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11-02-2013, 01:25 PM | #5 |
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Bioenno is the brand I use. It is a LiFePo4 battery its a pricey investment but it lasts so much longer than SLA batteries. I used to have 12v10a batterries die in 6 hours. With my bioenno it lasts days
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11-02-2013, 01:53 PM | #6 | |
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I haven't been out of NPH in awhile....you? I've been taking the boat out more often than the yak...been going south to the islands. |
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11-02-2013, 02:01 PM | #7 | |
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I'm sure it's been talked about a bunch but at $150+ I can buy a lot of those 12v 10ah Chinese specials that have been lasting me about two years. I found them for $23 each...Mine have always lasted atleast a full day on the water. How do you guys justify the cost difference? Weight? Do they last six times longer? (12 years) |
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11-02-2013, 04:56 PM | #8 |
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I was out a few weeks ago up north on the yak been spending too much time boating as well.
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11-03-2013, 08:12 AM | #9 |
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LiFePo4 is the name with correct capitalization. Aka "lithium Iron Phosphate"
LiFePo4 Advantages about 1/2 weight of SLA Battery constant voltage threw out discharge cycle, makes better finder readings Unlike SLA amp draw doesn't affect use able ah Faster charge times If taken care of more than 20k charge/discharge cycles = a ton of fishing trips Disadvantages Expensive about 5x cost of SLA Depending on "C" raiting can shock the living daylights out of you Needs a cell monitoring circuit to keep from over discharge If over discharged battery dies, period Needs a special charger SLA aka "Sealed Lead Acid" Advantages Cheap around $20 for a Chinese 12v 10ah Forgiving with overdischarge, just stick on a trickle charger Disadvantages Heavy, oh yea heavy Voltage sag Amount of current draw affects useble Ah Can last 2 weeks or 2 years who knows In my opinion the LiFePo4 are the superior battery and even with the higher cost if you put it in a pelican case with circuit management board and a good charger the batter will last as long as 10+ years with maby 10% ah loss over that period if properly taken care of and just for the reason of no voltage sag it is worth the investment! So as long as you take care of the battery it will take care of you. Last edited by danjor; 11-03-2013 at 08:17 AM. |
11-03-2013, 10:38 AM | #10 |
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So I use a 10AH NIMH 12V. I initially thought it was 12AH but I checked it's only 10AH.
I found the exact battery on ebay, but it's gone up slightly in price. http://www.ebay.com/itm/131018888014 When I bought mine everyone was using the normal lead acid batteries. Some people thought it was stupid or unnecessary to buy a fancy battery, but it was half the size and weight, had a longer power curve and according to the specs it was supposed to last for hundreds, even up to a thousands of charges if properly maintained. Here's it's size compared to a standard 7AH sealed lead acid battery. I don't have a thousand trips on it, but I do have a lot, and I think I bought the battery around this time of year back in 2008. It's still good and as a comparison I've gone through three lead acids for my bait tank since I bought it. I just run electronics, but that's includes chart plotters, squid lights, and an old 300,000 Candlepower Q-Beam I carry for hooping. I don't know that much about the newer technology batteries like the Lithiums, I'm sure they are great, but I'll tell you if my NIMH died tomorrow I'd buy another one, and right now at this point it wouldn't surprise me at all if I got another two or three years out of this battery. Just from my experience I'd say buying a better battery definitely pays off in the long run. Jim Last edited by Fiskadoro; 11-03-2013 at 01:08 PM. |
11-03-2013, 11:18 AM | #11 |
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LiFePO4
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11-03-2013, 11:30 AM | #12 |
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Here's one of the better prices for a LiFePo4. $86.42 plus shipping. If you need a balanced charger I would suggest combing your purchase here for one.
http://www.hobbyking.com/hobbyking/s...0645&aff=15144 Many options for batteries on this site. Last edited by CR Yaker; 11-03-2013 at 11:50 AM. |
11-03-2013, 01:24 PM | #13 | |
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The constant voltage throughout discharge cycle is a huge advantage. A SLAs voltage drops as it discharges, which means your finder has less and less voltage or power to run on the longer you run it on a SLA. First few hours they are fine but over time the performance starts to degrade. LiFepo4 and NIMH batteries have constant discharge which means the voltage stays the same until they run out of power. Effectively this gives you about a third more functional hours for your fishifinder on the same amount of amp hours. The reasons you list are the exact same reasons I went with a NIMH back in 2008. LiFePo4 sounds great but until I kill my current NIMH battery there is not much point in changing to anything else. You got it right. Those are the advantages to the better batteries, and it is worth the extra cash if you take care of the batteries and keep them going for the long term. |
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11-03-2013, 06:23 PM | #14 |
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Yep, they are expensive but so are some reels, rods, fishing line, hooks, kayaks, etc. If quality wasn't an issue we'd all be fishing with the cheapest gear we could find.
Don't go cheap just because its cheap
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11-03-2013, 06:50 PM | #15 | |
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I wonder if 8.4ah would be sufficient? |
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11-03-2013, 06:51 PM | #16 |
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I've been using lithium ion batteries since 09, been through 3 kayaks since then and on my fourth. Still on my original set, Batteries are still going strong. I did pay alot of money for them but i bought them just once and they power all my devices all day and some. Plus they are even lighter and smaller than the lifepo batteries... But the only drawback is you cannot get them wet, luckly i never have yet....
Alot of us have really powerful and expensive fishfinders. Why cheap out on the power source? Having that extra capacity in a smaller lighter package that will probably outlast your kayak is worth it in my opinion.
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11-03-2013, 06:55 PM | #17 | |
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11-03-2013, 06:59 PM | #18 | |
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Up until now the cheapest I found were $150 plus. I definitely don't mind spending more for quality...especially for mechanical functionality...But there's not many things we opt to pay 600% more for that has no moving parts. |
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11-03-2013, 08:52 PM | #19 |
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11-03-2013, 09:01 PM | #20 |
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This Hummingbird batt. on Amazon has very good reviews
Title says AGM, one reviewer says it's a gel cell batt. Includes a chrger. Under $40 at this time http://www.amazon.com/Humminbird-770...pr_product_top |
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