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police lightbar power supply


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stpropguy76 
Member - Posts: 6
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Joined: August 16, 2010
Location: Kentucky, United States
Posted: August 16, 2010 at 3:01 AM / IP Logged  

Hello,

I need Help.

I own a Code 3 MX7000 Police Lightbar, I want to wire it for Inside house use, I need a Cheap Power Supply Idea.

This MX7000 will need to use 40 Amps, I was thinking of using a Battery Jumpbox?

All other Methods are to Expensive. -Buying Power Converters, Marine Battery & Charger, 40 Amp Power Supplys.

I am looking to spend under $100.00 to Power this Lightbar.

Any other Suggestions?

Thank You........................

Jeremiah
oldspark 
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Location: Australia
Posted: August 16, 2010 at 11:50 AM / IP Logged  
How long do you want it to run for?
A jumper box might provide 10 minutes (15AH).
stpropguy76 
Member - Posts: 6
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Joined: August 16, 2010
Location: Kentucky, United States
Posted: August 16, 2010 at 1:28 PM / IP Logged  

Hello OldSpark,

Very nice to meet you.

I would like to run this Lightbar every now and then, Maybe 30 minutes a day.

I need a Power Supply with a Minium of 40 Amps to run all of the Lights at once.

I have a Video of this MX7000 Lightbar on you tube.com  Search for:   startrekfan76   You will se the Video's of the Lightbar and MX300 Switchbox.

Please do you have any Cost Saving ideas for Powering this inside?

Thank You...............Jeremiah

Jeremiah
oldspark 
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Posted: August 16, 2010 at 7:04 PM / IP Logged  
You'd need a 50AH battery or larger - that's a typical car battery (not small car).
And the charger to charge it over 24 hours.
The bigger the battery, the longer its lifetime.
(Maybe an under-voltage detector is worthwhile.)
If deep cycle, it shouldn't be discharged more than 50%. If a "normal cranking" car battery, discharge no more than 20-30%.
If the battery is indoors, it must be an AGM type(or other approved "sealed" types).
To save power, decide what features you do not want to run for what period of time.
stpropguy76 
Member - Posts: 6
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Joined: August 16, 2010
Location: Kentucky, United States
Posted: August 16, 2010 at 7:34 PM / IP Logged  

Hey OldSpark,

Thanks again for your Suggestions.

But looking at them brings me back to Cost, I have been told that I would need a Deep Cycle (Marine) Battery instead of the Regular Car Battery, The Cheap ones start at $80.00 + Core charge.

Then there is the Charger that Startes at $35-$40.00

So looking at it I am still spending around $120.00 For a Cheap Battery & Charger  

That defeats the reason for the Posting, I am looking for an Indoor Power Supply UNDER $80.00

What if I skip the Battery Totally and just use the Charger?       Or maybe a 300Amp Jumpbox?

Hook it up to the Charger or Jumpbox to the Switchbox/Lightbar wires, Then plug the Charger or Jumpbox into the wall, And power on?

What about that?, The Charger or Jumpbox should change Ac into Dc for the Lights. 

That way I'm still under the $80.00

But I have a guy that has a Cascade Audio 75Amp Power Supply that Plugs into the wall and also Converts Ac into Dc Power, He wants around $125.00 Each, If I go this route I'm only $5.00 more than for the Battery & Charger.

Still looking for Ideas?

Jeremiah
stpropguy76 
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Joined: August 16, 2010
Location: Kentucky, United States
Posted: August 16, 2010 at 7:36 PM / IP Logged  
Sorry, I don't know why I said $80.00?
Jeremiah
oldspark 
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Posted: August 16, 2010 at 7:52 PM / IP Logged  
What size is the battery in the jumpbox and its charger?
If its charger handles 40A, you'll be fine (but it won't).
If the battery lasts 30minute and it recharges within 24 hours, it'll be fine until the battery dies (that depends on battery type and how far it is discharged).
Or get a 12V/13.8V 40A supply, else 24V/27.6V(20A?) if you have the 24V lightbar - you won't need a batery.
stpropguy76 
Member - Posts: 6
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Joined: August 16, 2010
Location: Kentucky, United States
Posted: August 16, 2010 at 8:02 PM / IP Logged  

No,  I have the 12V Lightbar (Code 3 MX7000).

You can see this Lightbar and Switchbox, I made a you tube.com Video, Go to you tube.com, Search  startrekfan76, You will see the Video's.

So would I still need the Battery or could I just use the Car Battery Charger?

Jeremiah
stpropguy76 
Member - Posts: 6
Member spacespace
Joined: August 16, 2010
Location: Kentucky, United States
Posted: August 16, 2010 at 8:05 PM / IP Logged  

There I go again, It is you tube.com.

Search Video's by   startrekfan76

Jeremiah
oldspark 
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Joined: November 03, 2008
Location: Australia
Posted: August 16, 2010 at 8:55 PM / IP Logged  
If a PSU can power its load, then no battery is needed.
Be aware that battery chargers may not be good PSUs - they may be poorly regulated, and they can be noisy & require a battery for filtering etc.
If its only for testing (or sale), why not use a car and its battery etc?
I can only suggest searching eBay & google etc for a suitably cheap supply. 40A DC supplies are not cheap.
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