Running hammer jack 2 on dewalt 20v battery

[Richard M]

I have been looking for an answer to my question, "Can I run my call on a dewalt 20v max batt?"
Sadly I couldn't find one. So I figured out how to do it myself, and thought I would share it because the rechargeable battery packs are way too expensive for what they are. This only cost me $25 since I already have batteries, and it will play forever and not hurt the warranty, if done correctly. I have been on close to 10 hunts running 5 or 6 sets on the same battery and it hasn't even used one bar off the battery. It is a 5 amp though. I'm sure they make 12v converters for all battery types ie. Milwaukee or whatever you may have for the same price. Also my coworker is an electronics specialist, and assured me that it wouldn't effect the call. Since I didn't cut and splice any wires on the call itself, they won't know if I happen to have any other issues. I'll try to attach a video, just make sure you hook the batter leads up correctly I had to switch mine around on the 9v connector I bought.

 

[AWS]

That is pretty interesting.

Back a long time ago I ran my JS tape player on a couple of rechargeable fencer batteries strapped underneath. JS batteries were expensive and hArd to find pre-internet, every hardware and farm store had fencer batteries. It just made it bulkier.

 

[Richard M]

That is pretty interesting. Back a long time ago I ran my JS tape player on a couple of rechargeable fencer batteries strapped underneath. JS batteries were expensive and hArd to find pre-internet, every hardware and farm store had fencer batteries. It just made it bulkier.

That is pretty interesting. Back a long time ago I ran my JS tape player on a couple of rechargeable fencer batteries strapped underneath. JS batteries were expensive and hArd to find pre-internet, every hardware and farm store had fencer batteries. It just made it bulkier.

That is pretty interesting. Back a long time ago I ran my JS tape player on a couple of rechargeable fencer batteries strapped underneath. JS batteries were expensive and hArd to find pre-internet, every hardware and farm store had fencer batteries. It just made it bulkier.

That is pretty interesting. Back a long time ago I ran my JS tape player on a couple of rechargeable fencer batteries strapped underneath. JS batteries were expensive and hArd to find pre-internet, every hardware and farm store had fencer batteries. It just made it bulkier.

 

[Richard M]

I agree it is alittle bulky but it kept an owl from robbing my call the other day he did end up with my tail though and it keeps the call out of the mud when I hunt the river bottom down here when the washes run

 

[204 AR]

Interesting. Years ago I made a cassette caller with a car stereo, and powered it with a 12v drill battery. Worked great although a bit heavy lol.

 

[BLF]

I have done something similar with my Shockwave. I just used a little buck converter to get the voltage down.

 

[Chas]

The key with doing this is to make sure you use a step down converter to reduce the 20v to 12v. The one in your picture is a heavy duty step down converter, you can get much smaller ones for as little as $7.00. I am using my dewalt batteries more and more using the battery adapters and step down converters where the electronics are configured for 12 v - including portable fish finders. Looking at the specs for whatever you are converting may show that you dont need a step down converter if it can handle the 20v input.

Something I did similar to create a power box for lighting in my ice fishing rig:

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[v2k]

Is there a picture of what or how the converter is hooked to the caller.

 

[Chas]

In the OPs first picture, the step down converter is the finned aluminum piece on the right of the battery. It is connected to a battery adapter with the red and black wires. The battery snaps into the adapter and delivers 20v to the step down converter, which then sends 12v out through the yellow(+) and black(-) wire.

Here is a power box in preliminary build that I made showing a Dewalt battery adapter connected to a (much smaller) step down converter:

In the OPs description, the 12v wires are connected to a plug in that attaches to the plug in connector in the caller. Note that he said you have to reverse the polarity of the 12v feed plug to ensure that you are delivering +voltage to the + connector in the caller, and feeding - voltage to the - connector in the caller.

Hopefully this makes sense.

 

[BLF]

This is the one that I used. I put it inside of the battery adapter. It's very small.

LM2596 DC to DC Voltage Regulator Buck Converter Power Supply Step-Down Module | eBay

High-efficiency LM2596 buck converter for various electronic projects. This superior module is designed with thick circuit boards, high-Q inductors, output LED indicator, and solid-state capacitors, which enable it to effectively filter out high-frequency noise.

www.ebay.com

 

[BLF]

This is the one that I used. I put it inside of the battery adapter. It's very small.

LM2596 DC to DC Voltage Regulator Buck Converter Power Supply Step-Down Module | eBay

High-efficiency LM2596 buck converter for various electronic projects. This superior module is designed with thick circuit boards, high-Q inductors, output LED indicator, and solid-state capacitors, which enable it to effectively filter out high-frequency noise.

www.ebay.com

 

[BLF]

I thought I would post some pictures of how I did mine for the people that are interested in doing this. Also if anyone is interested the call is for sale. 550 sounds. $450

 

[BLF]

Just make sure you set the voltage to the same as the battery pack had and don't put batteries in the pack when using the external battery. I don't want anyone frying there caller.