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#1 |
Senior Member
Join Date: Sep 2017
Location: Los Angeles, CA
Posts: 400
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FF Battery question (ryobi Lithium Ion?)
Had a great day on the water today, (The calico bite was so good, I could barely make bait... had them load up my sabiki twice, which was a fun and new challenge) but my battery went out prematurely on my FF. This will be the 4th SLA battery I've bought since getting my Kayak 3 years ago. I'd noticed last night that my backup and my main weren't holding above 11.9v and had a feeling it was becoming problematic. One place I *have* had a great battery experience is with my tools. I've spent half my life on jobsites, and seldom have to replace a Ryobi battery. It hit me today that they're the same Amp hour rating as a Nocqua (5ah on some of the aftermarket ebay batteries) Am I missing anything? Anybody tried this before and have tips/warnings, etc? EDIT: I'm an idiot and should refrain from thinking after a day on the water... I realize my Ryobis are 18v. . . . But I do see stuff like this online that looks pretty tempting for the price if nothing else worth the experiment https://www.amazon.com/DSANKE-Lithiu...673836&sr=8-16 Last edited by ProfessorLongArms; 05-16-2020 at 04:05 PM. |
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#2 |
Xcoastie
Join Date: Jun 2013
Location: Westminster
Posts: 285
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Yes. What voltage are you thinking? I’m awaiting a voltage regulator that accepts 11-24 volts and outputs 12 volts. My build is using 3 5ah makita 18 volt batteries. My lowrance FF said it can work on voltages up to 17v but my batteries start around 20. Didn’t want to take any chances. IMG_3306.jpg
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#3 | |
Senior Member
Join Date: Sep 2017
Location: Los Angeles, CA
Posts: 400
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Quote:
Good to know this isn't crazy. Now it looks like I've got a rabbit hole to fall down ![]() |
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#4 |
Xcoastie
Join Date: Jun 2013
Location: Westminster
Posts: 285
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I would make sure you display your input voltage on your fish finder so you don’t discharge down to far. Most manufactures am have safety’s built in where if it’s over discharged the charger will brick the battery.
Heavy lead acid batteries. And a desire to build something lead me to this. Plus I haven’t been fishing enough to justify a 100-200$ dedicated battery. But I do already have a ton of makita batteries that I use regularly. Figured might as well build it. Sent from my iPhone using Tapatalk |
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#5 |
Senior Member
Join Date: Sep 2011
Location: San Diego
Posts: 901
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I just replaced mine with a new Nocqua 12v Lithium 10AH which is 1.4 pounds.
Used it a couple of days ago to Limit on Vermilion and it never ran out of power. It is super light compared to the clunker lead-acid. I am so glad Ron talked me into it. I highly recommend it. |
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#6 |
Senior Member
Join Date: Jan 2012
Posts: 2,523
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bioenno power
reasonable price. life expectancy of 2000 - 3000 charges / 7-10 years. made specifically for marine application. warranty is good and customer service is exceptional. these battery's are built for marine applications with safety in mind, eliminating the possibility of fire. there is a chart on their web page which recommends a specific battery based on your head unit model and gives estimated hours of operation per charge based on your head units power consumption. these batters are high capacity batteries with a long life. also half the weight of SLA battery. you will need to buy the charger initially.
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#7 |
Senior Member
Join Date: Aug 2015
Location: Yucaipa, CA
Posts: 1,136
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I use the same batteries I use in my rc airplanes 3 cell LiPo batteries, 5 amp usually last me 6 hours and because they are light in weight I carry an extra and change them if I need longer times. It does take a dedicated charger
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you can't eat it if you release it |
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#8 |
Large Member
Join Date: Jul 2012
Location: La Verne, CA
Posts: 1,002
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Many power drills are using lithium iron phosphate chemistry. It's really meant for high power applications. Not saying it won't work, just not optimized for your use case. In addition, I'd be curious to know what your FF is doing with that extra voltage. My guess is that it's going through a voltage regulator, some are efficient others are not(linear).
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#9 |
Senior Member
Join Date: Aug 2015
Location: Yucaipa, CA
Posts: 1,136
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There are big differences in Lithium technology. While Lithium Polymer will charge to 4.7 volts per cell and discharge at a more even rate Lithium Ion charges to 3.3 volts per cell and hold a steady level longer but will fall off rapidly without warning. LiPo drops evenly but cannot be allowed to fall below 3 volts per cell or will be ruined and cannot be recharged. Both take a dedicated charger. Both can be partially discharged and recharged without damaging them and will take over 1000 charge cycles. LiPo is highly volatile and if damaged will burn with a white hot fire, not a good thing on a boat. Probably the type of battery that was on the dive boat. I use LiPo because that is what I own but if I buy another battery for my kayak it will be LiIon.
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you can't eat it if you release it |
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#10 | |
Xcoastie
Join Date: Jun 2013
Location: Westminster
Posts: 285
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FF Battery question (ryobi Lithium Ion?)
Quote:
Sooooo. Who’s got a cell phone without a lipo inside? I’m aware of the potential hazards. But the worst that happens is I flood my batteries with salt water. Which happens to be one of the safe ways to discharge the battery down before you destroy it. So worst case is I loose a couple batteries. But that’s only if my kayak floods and my waterproof box floods. And by that point. That’s probably the least of my concerns. Sent from my iPhone using Tapatalk |
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#11 | |
Senior Member
Join Date: Aug 2015
Location: Yucaipa, CA
Posts: 1,136
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Quote:
__________________
you can't eat it if you release it |
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#12 |
Senior Member
Join Date: Jan 2012
Posts: 2,523
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So what
Exactly are we looking at? Can’t make it out. A battery that expanded?
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#13 |
Large Member
Join Date: Jul 2012
Location: La Verne, CA
Posts: 1,002
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There's alot of misinformation in this thread, some of which would at the minimum give you an unpleasant day on the water or at it's worst cause death or harm.
1. Lipo is a reference to the use of a polymer base electrolyte as oppose to a liquid base system + separator. It's inherently safer. Reason being it removes flammable liquid electrolyte from the equation. It does NOT charge at a different voltage. 2. All lithium metal oxide chemistry type cells charge to 4.2-4.1 volts. Lithium iron phophate charges to 3.6. What Harry is probably seeing on his rc batteries are the operating voltages per cell, not the charge voltage. He's probably mistaking 4.7 for 3.7. Charging to 4.7 WILL definitely cause a fire. Charging to 3.3 will probably discharge the cell. 3. Class D fire extinguisher is only needed for metal fires. These are group 1 or 2 elements like lithium, sodium, magnesium, and calcium. This applies only in their pure form. Lithium metal does not exist in lithium ion or lipo batteries. Lithium metal does occur in non-rechargeable lithium batteries. Most of the fire from a lithium ion battery is the electrolyte, hence why a class B extinguisher should be used. I've been involved in research and manufacturing of lithium non-rechargeable batteries for over 10 years. Currently working on non-rechargeable and rechargeable lithium batteries for space applications. Last edited by jruiz; 05-18-2020 at 05:07 AM. |
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#14 |
Senior Member
Join Date: Aug 2015
Location: Yucaipa, CA
Posts: 1,136
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a battery that shorted out and had an exothermic reaction. Those are all the different layers of that make up the battery. It was in the bed of my pick up and shorted out.
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you can't eat it if you release it |
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#15 | |
Senior Member
Join Date: Aug 2015
Location: Yucaipa, CA
Posts: 1,136
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Quote:
__________________
you can't eat it if you release it |
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#16 |
Large Member
Join Date: Jul 2012
Location: La Verne, CA
Posts: 1,002
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#17 |
Senior Member
Join Date: Jan 2012
Posts: 2,523
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Please take a look at this
I use a bioenno 6 volt 10 amp lipo for my vittels bait tank. The tank has a dry box to hold the battery. The battery is heat shrink wrapped with abs. The sides are paper. I wrapped the whole battery with heavy duty clear packing tape making it more water resistant. Is this thing a ticking time bomb? It is encased in a dry box when fishing. What happens to the lipo’s if they are short circuited from water such as flooding of yak? Thanks for feedback. Ps. Thanks for reaching out on my direct message.
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#18 |
Large Member
Join Date: Jul 2012
Location: La Verne, CA
Posts: 1,002
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I don't even know why I'm wasting my time with this. This is a LIPO battery from my garage
![]() This is a volt meter on the same 3 cell LIPO battery that I just charged. 12.5/3=4.16V ![]() Here's a datasheet for a random LIPO cell with the charge voltage highlighted ![]() If you somehow discovered a 4.7-5V lithium rechargeable battery, hurry up and patent it. Everyone in the battery industry knows that the electrolytes in the batteries aren't stable at that high of a voltage. What happens is that the electrolyte breaks down and starts forming CO2. Probably what happened to you guys https://www.arl.army.mil/wp-content/...trolyteAdd.pdf Last edited by jruiz; 05-18-2020 at 08:12 AM. |
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#19 | |
Senior Member
Join Date: Aug 2015
Location: Yucaipa, CA
Posts: 1,136
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Quote:
__________________
you can't eat it if you release it |
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#20 | |
Large Member
Join Date: Jul 2012
Location: La Verne, CA
Posts: 1,002
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Quote:
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