Reddit mentions of RAYOVAC General Purpose Lantern Battery, 12 Volt, Screw Terminals, 926C

I have kinda worked with these LED strips before, it's very reasonably priced. The expensive part is portable power of 12v and 1 amp and 3+ Amp hours.

http://www.amazon.com/Rayovac-926-General-Purpose-Terminals/dp/B000ROFZFE/ref=sr_1_3?ie=UTF8&qid=1414877921&sr=8-3&keywords=12+volt+battery

http://www.amazon.com/SUPERNIGHT-Waterproof-300LEDs-Flexible-Controller/dp/B00B2F3KDQ/ref=sr_1_1?ie=UTF8&qid=1414877695&sr=8-1&keywords=led+waterproof+strip

I have it in my hands. I built my own iontophoresis machine and I started using it yesterday.

https://www.youtube.com/watch?v=bOQfjZ9-Akw

https://www.amazon.ca/gp/product/B000ROFZFE/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

https://www.amazon.ca/gp/product/B00JPBZINO/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

https://www.amazon.ca/gp/product/B0029DHT5U/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1

I have ADHD and I'm looking into cdb pills as well. I'll update if anything happens!

What kind of range do you want? 12V battery + adapter + Car FM adapter. Plug in your phone and you can transmit whatever audio you play. Perfectly legal under FCC Part 15 rules.

Edit: fix link

If you are looking rechargeable go with:https://smile.amazon.com/ExpertPower-EXP1270-Rechargeable-Lead-Battery/dp/B003S1RQ2S/ref=sr_1_1?s=automotive&ie=UTF8&qid=1494114886&sr=1-1&keywords=12v+ups+battery

Else i would use one of these: https://smile.amazon.com/Rayovac-926-General-Purpose-Terminals/dp/B000ROFZFE/ref=sr_1_2_a_it?ie=UTF8&qid=1494114969&sr=8-2&keywords=lantern%2Bbattery&th=1

The lead acid will run the horn for a couple hours. The lantern battery less.

You could also grab one of these lantern batteries and use it with the cigarette lighter adapter. It should be able to charge your devices for a while. Can't recharge it, but $15 for a few days of power isn't bad.

I recently added LED lighting to my closet and gun-cabinet using these:

LED Strip

In the closet I added a motion sensor (this one)
and a power adapter for 120v to 12v. Has tons of light and it's awesome having it be motion activated.

In the gun cabinet I used the same style LED strip, but am running it off of a battery (this one) and a toggle switch.

I could easily run another motion sensor in the cabinet though, that might work out better for your scenario. If you have the room for the battery you can just secure it with some double-sided tape, add the motion sensor and have it run an entire strip of the LEDs (it'll be very bright), though you might only need a few sections of LED.

So, I agree with everyone else. It depends a lot on how long you want to run it for... and how much you want to spend.

If you want to do this once, and roughly 20-30 minutes of run time is long enough, then this should work:
http://www.amazon.com/Rayovac-926-Lantern-Battery-General/dp/B000ROFZFE

It's a bit big for a pocket, but the price is right... Snip the wall connector plug to the LED and then attach it to the terminals. Just make double-sure you get the polarity correct (positive to positive, negative to negative) on the plug. If you do it backwards, bad things will likely happen.

If you want to do this more than once or twice, I'd personally recommend, calling up or emailing batteryspace.com and asking them (http://www.batteryspace.com/contactus.aspx). If you can find out what the connector is on the LED string - and the polarity of it (always key), then ask batteryspace to make a custom 12V NiMH pack for that connector and then ask for a charger for it as well.

This will run it for about 20 minutes and will get pretty warm in the process and probably would fit in a big pocket (smaller than the Rayovac cell though).
http://www.batteryspace.com/customizednimhbatterypack12v2200mah10xaa.aspx
with this charger:
http://www.batteryspace.com/smartcharger07afor84v-12vnimhbatterypack--ullisted.aspx

If you want to run it longer, then you'll need a bigger (more expensive pack). If you want it to weigh less or be small, then you'll need to switch to a lithium polymer pack. But see what batteryspace.com recommends. If you tell them what you want, they can make it for you. And, no, I'm not associated with them.

As an alternative, I've used these guys too (different company, different batteries, but same type of thing...):
http://www.all-battery.com/

thanks for your help!

would a battery like this be suitable to brightly light up the strip?
http://www.amazon.com/Rayovac-926-Lantern-Battery-General/dp/B000ROFZFE