FF Battery question (ryobi Lithium Ion?) - Kayak Fishing Adventures on Big Water’s Edge

ProfessorLongArms · 05-16-2020, 03:56 PM

Hey All,

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

igotpron · 05-16-2020, 04:05 PM

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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ProfessorLongArms · 05-16-2020, 04:09 PM

Quote:

Originally Posted by igotpron

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. Attachment 26516

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Heh. I just finished editing my post, as I realized I brainfarted on the voltage. Thanks for pointing that out... Looks like my garmin has a 10-20 range, so I *could* actually power it on an 18v and just throw them on my dedicated tool charger between trips.

Good to know this isn't crazy. Now it looks like I've got a rabbit hole to fall down

igotpron · 05-16-2020, 04:16 PM

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.

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ctfphoto · 05-16-2020, 04:24 PM

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.

TJones · 05-17-2020, 05:39 AM

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.

Harry Hill · 05-17-2020, 06:25 AM

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

jruiz · 05-17-2020, 06:52 PM

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).

05-16-2020, 03:56 PM	#1
ProfessorLongArms Senior Member Join Date: Sep 2017 Location: Los Angeles, CA Posts: 400	FF Battery question (ryobi Lithium Ion?) Hey All, 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.

05-17-2020, 05:39 AM	#6
TJones Senior Member Join Date: Jan 2012 Posts: 2,523	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.

05-17-2020, 06:25 AM	#7
Harry Hill Senior Member Join Date: Aug 2015 Location: Yucaipa, CA Posts: 1,136	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 __________________ you can't eat it if you release it

05-16-2020, 04:05 PM	#2
igotpron Xcoastie Join Date: Jun 2013 Location: Westminster Posts: 285	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 Sent from my iPhone using Tapatalk

05-16-2020, 04:16 PM	#4
igotpron Xcoastie Join Date: Jun 2013 Location: Westminster Posts: 285	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

05-16-2020, 04:24 PM	#5
ctfphoto Senior Member Join Date: Sep 2011 Location: San Diego Posts: 901	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.

05-17-2020, 06:52 PM	#8
jruiz Large Member Join Date: Jul 2012 Location: La Verne, CA Posts: 1,002	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).