Kayak Batteries for sale
 

I have several CSB GP-12170NB 12V 17AH sealed lead acid batteries for sale. These are awesome batteries. They are designed to be used in a UPS, so they are extremely efficient. You can run your FF/GPS, lights, and your bait pump simultaneously with this battery- and you can run them ALL DAY LONG!!! The dimensions are 7.1" x 6.6" x 3", and the weight is 12#'s. They are 2x's as big a the standard lead acid batteries used in a kayak auxiliary application. But like I said, you can run everything you need to run with these batteries, and have juice to spare at the end of the day. Here is a picture:



They average $45 per battery on the internet. Amazon shows it as $30, but is charging $17 for shipping. I'm selling them for $30 a piece. They will serve you well for years. I have a surplus of them, so that's why I'm getting rid of them. They've all been recharged and recalibrated with a smart charger, so they are like new and are ready to go. Let me know if you're interested.

Also, If you like to run your bait pump on 6V instead of 12V, I can make you an inline voltage dropper for an additional $15. It will be completely waterproof.

Manufacture date? Are they new or pulled from a UPS?

Also your location?

Pulled
 

Pulled from a UPS. I work for a local telecom company and my crew handles the 911 Call Centers. We recently upgraded all of their systems, and we put in brand new equipment (routers, switches, desktop computers, phones, and UPS's). All equipment is replaced regardless of how new or old it was. This UPS was only used for a year. It was a smart UPS so it constantly trickle charged and calibrated the batteries. They are as good as new. I own a Genius Battery charger that goes through a very complex charging cycle. It will actually restore life to batteries. I used my charger on them as well. These batteries are designed to be charged and discharged, and that's exactly how they were treated. They work FLAWLESSLY! You will get years of usage out of them.

Location is Kearny Mesa (work), and National City (east of the 805- home). If you're interested, shoot me a PM and I'll give you my number.

thanks for the information I'm actually asking for a friend who just picked up a Revo. he's going to go with a new one instead but thanks anyway

Batteries run great
 

How long will it run a HDS 5 with GPS?

ALL DAY!
 

Brother, It will run your FF/GPS all day long. It will also run your bait pump at the same time, ALL DAY LONG! If you're fishing from a Hobie, then you're probably running the bait tank on the 6 volt battery that goes with it. I've heard that the 500 GPH Tsunami bait pump beats the crap out of the bait in the Hobie bait tank if you try to run it on 12 volts. So running it on 6 volts cuts the flow rate down to about 150-200 GPH. I have made a simple electrolytic device with 2, 500 ohm resistors that steps the voltage down to 6 volts. You can run 2 leads from the battery. The lead for the FF/GPS will use 12 volts, and the bait tank can run through the voltage stepper to drop the voltage from 12 to 6 volts. Trust me, 150-200 GPH is more than enough oxygenated water for your small bait tank on your kayak. The device I made is encapsulated in casting resin. It's completely waterproof. If interested in that as well, let me know.

voltage stepper
 

Sounds like a simple voltage divider. If it is, it's very inefficient and shouldn't be used as a power supply for a load. Every bit of current used by the pump also has to run through a resistor, and all that wasted power is dissipated as heat.

It depends on the size of the resistors (actual size, not ohms rating). I used large 500 ohm resistors. But, just to be sure I'll run a load on it. I have a infrared Lazer gun. I'll shoot the temp at the start and every 30 minutes for a couple of hours. Heat is always a byproduct of energy, so I wont be surprised if it heats up a little bit. We'll see what the result is.