Reddit reviews UPG D1724 Sealed Lead Acid Battery Charger (6V/12V Switchable Single-Stage With Alligator Clips)

I also have put horns on my bike:

Picture of the horns.

Test video. It's much louder than it sounds in the video. Much louder than a typical car's horns. I only use it for situations where I am not seen by a driver and in danger. Not for casual "fuck you, buddy" type of situations.

Originally I had this set up with industrial zip ties, but it was not a very robust setup, so I removed it before this past winter. The bike is currently sitting in pieces. When I reassemble it I will mount the horn components in a single, weather-resistant enclosure, with a quick-release attachment so I can take it with me when locking up outside.

parts:

• horns
  
  
• battery
  
  
• charger
  
  
• illuminated door bell button

What you should do is buy a sealed lead acid battery, a power inverter, 12v clips to cig lighter and a charger.

I just picked those products as examples but that would work and would cost around $50. It could probably be cheaper if you look around.

Also the batteries in most small UPS are around 2 amp/hour while the one I picked is 8Ah.

And that would be pretty easy to use.

It's a Piranhamax 150 I picked it up at Academy for $50 during a sale. I think it's regular $80, it works pretty good I have no complaints. I tried to mount the transducer to the hull but I kept kicking it loose so I just wrap the cord around the base of my mount (you can see in the picture) and drop the transducer in the water just below the hull of my yak.

It's hooked up to a 12v battery stored in a dry bag I bought on Amazon: http://www.amazon.com/UPG-Security-12V-7-2Ah-Certified-Electronics/dp/B001MHSCWI/ref=sr_1_2?s=hpc&ie=UTF8&qid=1373486574&sr=1-2

Don't forget the charger either!: http://www.amazon.com/Sealed-Battery-Charger-UPG-D1724/dp/B001G8AIMU/ref=pd_bxgy_e_text_y

> However, they will require some amount of hardware to be able to be charged

Or a universal lead-acid battery charger.

Also, pick those things up at Walmart or Home Depo. They're usually called Telecom Batteries. In my area, they're relatively plentiful because Verizon FIOS boxes use them for battery-backup.

You look to be on the right track. I just bought a fishfinder for my kayak.

This is the battery I bought

Along with this charger

I also picked up this waterproof box that I've seen a lot of people use to put the battery in. Do a google search for DIY fishfinder battery box.

Good luck, I'm on the east coast so I have to wait for it to warm up before I get everything on the yak

http://www.ebay.com/itm/12V-Sealed-Lead-Acid-Car-Motorcycle-Battery-Charger-Rechargeable-Maintainer-YK-/152151069810?hash=item236ce91472:g:M6IAAOSw-KFXdlI6&item=152151069810&vxp=mtr

https://www.amazon.com/Sealed-Lead-Battery-Charger-D1724/dp/B001G8AIMU/ref=sr_1_1?ie=UTF8&qid=1467867243&sr=8-1&keywords=lead+acid+charger

you can go more expensive if you want a faster charge