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05-16-2016, 09:43 AM | #1 |
Senior Member
Join Date: Nov 2011
Location: Near Palos Verdes
Posts: 198
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Another LIPO battery for FF
Nothing new or too exciting but if this helps someone then great!
Got a new OK Trident 13 recently and purchased a Lowrance hook 4x to go with it. I really don't like the added weight of the typical SLA batteries so I decided to go with the Lipo batteries. I purchased a Turnigy 5000Mah 4S1P 14.8volt lipo pack and an S3 T2500 Watertight Dry Case. It fits perfectly into the battery case that OK has at the bow. I'm also using LED Light Strips 2 Terminals Waterproof Connector Cable for easy disconnect from the FF. The whole thing weighs about 22 ounces and it's compact! I used it on Saturday even though I only got a little over 3 hours on the water it performed really well. Also the Hook FF has an option to display the voltage so I could keep an eye on it throughout the morning. (You really don't want the Lipo cells to go below 3.0 volts and since each cell could discharge at different rates you don't want the 4s to get below 12.4 v/3.1v per cell) it started off at 16.5 volts and ended at 15.9 volts after 3 hours. I was mainly using the Chirp sonar since we were fishing for rockies in the 300' range. I'm sure if I had GPS or used DSI more it would had drained faster. Your mileage may vary I also purchased a HobbyKing ECO8 150W charger/balancer/discharger. My other one couldn't charge a 4 cell Lipo Anyway, the charger worked well. you need an external power supply so I used an old ATX power supply that I had pulled from a PC a long time ago for something and used that. Charging was uneventful but the best part was discharging the lipo to storage mode to keep the lipo in the most stable state for long term storage(anything over a few days. Lots of info/opinions online about this topic) That's it for now. I just wanted to share. |
05-16-2016, 11:08 AM | #2 |
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Join Date: Mar 2013
Location: Camarillo
Posts: 1,491
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Cool.. How much was each item?
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05-16-2016, 12:33 PM | #3 |
Senior Member
Join Date: Nov 2011
Location: Near Palos Verdes
Posts: 198
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Turnigy 5000Mah 4S1P 14.8volt lipo - $40 amazon. You can get these from Hobbyking as well.
S3 T2500 Watertight Dry Case - $16 amazon LED Light Strips 2 Terminals Waterproof Connector Cable $6 amazon HobbyKing ECO8 150W charger/balancer/discharger. $32 from hobbyking |
05-16-2016, 11:27 AM | #4 |
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Join Date: Feb 2009
Location: SAN DIEGO
Posts: 1,086
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Congrats on your new lipo 4s battery set up. You did it right and you did your research. The only thing I would suggest is to add a battery monitor 4s. ( picture below) Wire it parallel to circuit.
If the battery goes below 3volts from the battery factory rate the monitor will beep. This is better than watching your FF screen all the time. And yes keep an eye on your cells with a cell monitor as well. You should be good all day and more with only one 14'8 4s battery. I wanted something that would last me for two days so got the 6500mAh Lipo Batt.
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"The secret of life? one thing just one thing only. That's what you gotta figure out" curly Last edited by driftwood; 05-16-2016 at 12:23 PM. |
05-16-2016, 12:27 PM | #5 | |
Senior Member
Join Date: Nov 2011
Location: Near Palos Verdes
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Quote:
Also if it goes off, i can't reach it to turn it off and it will continue to drain the battery. |
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05-16-2016, 12:40 PM | #6 |
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Join Date: Feb 2009
Location: SAN DIEGO
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The monitor is very loud. I also have it in a water tight pelican box and I have no problem hearing it.
I'm sure you have already read the safety spec's for your batt. Make sure you store it in a cool area. Other wise it will melt and go on fire...don't ask me how I know.
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"The secret of life? one thing just one thing only. That's what you gotta figure out" curly Last edited by driftwood; 05-16-2016 at 12:59 PM. |
05-16-2016, 12:55 PM | #7 |
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Join Date: Feb 2009
Location: SAN DIEGO
Posts: 1,086
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If the monitor goes off and you can't reach it to turn it off it will take a year to drain your battery. It uses a tiny LED light and beeper is DC.
So no.... the monitor will not drain your battery. And yes I have years of experience. Who taught you how to do this? I have never seen anybody else use this system on kayak before.
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"The secret of life? one thing just one thing only. That's what you gotta figure out" curly |
05-16-2016, 01:30 PM | #8 |
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Join Date: Nov 2011
Location: Near Palos Verdes
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05-16-2016, 01:37 PM | #9 |
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Join Date: Nov 2015
Location: San Marcos, CA
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Cool. I was wondering if any of you guys are using LiPo packs for anything on your yaks. I have enjoyed building and flying R/C airplanes, helicopters for many years now, and these batteries have really helped the performance of electric models. I just last night built up a 2S2P 5300 mAH 7.4 volt pack for my bait tank. The pump draws 800 milliamps at 7.4V, which should give 5 hours of continuous running. The pack weighs about 10 ounces. A word of caution though, Lithium packs must be charged with constant current to 4.2 volts per cell, then constant voltage the remainder of the charge cycle. All cells must be balanced individually (exactly the same voltage on each of the cells). Luckily, there are chargers available that take care of this for us. As long as the cells are not discharged below 3 volts per cell, and they are used within their discharge rate capabilities, they last and last. Alarms, or a form of auto shut-down at 3 volts per cell-as mentioned in above posts should always be used.
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