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Author Topic: Using 18V Drill Battery for LiveScope System  (Read 157 times)

Offline dgfidler

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Using 18V Drill Battery for LiveScope System
« on: Mar 08, 2019, 01:26 PM »
I bought a Garmin LiveScope system for my boat and have built a 'LiveScope Box' that is self contained. I've missed the boat for ice fishing this year, but I have big plans to use this LiveScope next year and beyond.  I hacked an old Ryobi battery charger and turned it into a device that outputs 18V.  I have my box built and am very pleased with it.  I am running the 'black box' and a EchoMap Plus 93sv off this ryobi battery.  I'm conducting a test in my basement with the livescope submerged in water while the unit runs on a 4ah battery.  I had planned to get the new 9ah battery Ryobi sells, but this 4ah battery has been running the entire system for 3 hours and the voltage is down to 17.2v according he the EchoMap.  I have no idea when this battery is considered 'discharged' and needs swapped out with a fresh one.  Can I run this until it gets in the range of 12v?  If I do that, will I ruin the battery?  I got the idea of using the cordless drill battery from this site, but am now realizing I don't really know at what point I should swap the battery based on volatage.  I'm sorry for jumping right in with a question like this on my first post.

Offline dgfidler

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Re: Using 18V Drill Battery for LiveScope System
« Reply #1 on: Mar 08, 2019, 02:02 PM »
The Garmin unit just shut itself down at around the 3 1/2 hour mark.  It looks like I should swap out batteries soon after voltage drops below 17.5 which would have been about 2.5 hours on a 4ah battery.  This tells me the amp draw is less than 2 at least when running with the LSV32 in a bucket of water.  This thing's going to be awecsome!  I added a picture of my box if anyone is interested.


 



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