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2006 Hawk Battery Replace & Auxiliary Battery

2006 Hawk Battery upgrade

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#1 A.Smith

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Posted 26 January 2020 - 05:24 AM

I have a 2006 Hawk with an Interstate AGM 12v75ap DCM0035 from 2014 that I need to replace and upgrade. In addition I want to add an auxiliary battery.

This battery model is no longer available from Interstate.

The area for a battery in the 2006 Hawk is in the size of a group 24, maybe a group 27.

 

Suggestions for replacement ?

 

The Controller and all the other wiring is original. I have some mechanical abilities, but Electricity is not my strong suit.

Do I need an ACR?

 

I will not be adding Solar.

I just need more battery life for Lights and my CPAP.

 

Suggestions, Help, needed and welcomed.

 

Thanks to All,

A.Smith


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#2 Vic Harder

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Posted 26 January 2020 - 06:11 AM

If you can afford it, get a Battleborn 100 AH Lithium battery.

 

Backing up a bit, have you been using that Interstate battery with the CPAP for 6 years?  If so, congratulations, that might be a new record!  And also if true, any good group 27 battery should work.

 

https://www.rvweb.ne...ttery-reviewed/

 

That said, any battery that advertises its Cold Cranking Amps (CCA) is a dual purpose battery and not what you want.  You want the equivalent of a Golf Cart or Solar battery.  Trojan makes very good batteries:

 

https://www.trojanba...Data_Sheets.pdf

 

Alternately, get a battery from Costco and use it happily for another 6 years!


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#3 fish more

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Posted 26 January 2020 - 03:47 PM

six months ago I replaced both of my Cabelas AGM batteries that were installed in 2009, I was very happy with the service I received from them. You could add a aux battery, install a battery switch, marine supply stores sell them, very easy to install, helps to manage each battery. Look at Blue Sea Systems switches, quality stuff, use them in my boat as well.


Edited by fish more, 26 January 2020 - 03:52 PM.

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#4 esimmers

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Posted 27 January 2020 - 02:44 AM

A. Smith,

 

To best answer your questions, we need more information about your current battery, charging and loads. It seems that you have a single Group 24 AGM battery that's lasted you for 6 years (that's really good). The "controller" you mention is probably a 120 volt AC to 12 volt DC converter that powers your lights and other DC loads - and charges the battery - when you're plugged in to 120 volt AC shore power.

 

You mention your CPAP. It would be helpful to know if you're only powering it when plugged into 120V AC shore power. Or if you're "boondocking" without shore power are consequently are running the CPAP directly off the battery (12 volts DC) or using a DC to AC inverter to power the CPAP with 120V AC.

 

I use a CPAP machine that will run on 12 volts DC using an adapter cord sold by the CPAP manufacturer. (Many CPAP machine power supplies used at home just convert 120V AC to 12V DC before connecting to the machine. You'll save money and battery charge in that situation by using the 12V adapter to run directly off your battery.) I generally don't use the CPAP humidifier when running on battery power because the humidifier uses a heated plate that uses even more electricity than does the blower fan in the main CPAP unit.

 

I bought a Group 27 battery (12.0625 x 6.8125 x 8.875 inches nominal size) that fits fine under my Hawk front seat. It's rated at 110 amp-hours which is a bit of a boost from your typical Group 24 battery (75-80 amp-hours). I made sure to get a true deep-cycle battery and not one of those marine deep cycle batteries that is sold to boaters who need something to both start their boat engine and run their electronics. Expect to spend about $300 on a name-brand Group 27 AGM deep-cycle battery.

 

You don't want to regularly use more than 50% of an AGM battery's capacity before recharging it if you don't want to shorten its life. In my case, 50% of a 110 amp-hour battery is a useful capacity of about 55 amp hours. My CPAP draws 10-12 amp hours per night. So I can get 3 nights of CPAP use (plus all the other lighting and cell phone charging, but no furnace) without dropping below 50%.

 

So, tell us a bit more about your system and we may be able to give you better-tailored advice and information.

 

Ed


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#5 A.Smith

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Posted 27 January 2020 - 04:30 AM

A. Smith,

To best answer your questions, we need more information about your current battery, charging and loads. It seems that you have a single Group 24 AGM battery that's lasted you for 6 years (that's really good). The "controller" you mention is probably a 120 volt AC to 12 volt DC converter that powers your lights and other DC loads - and charges the battery - when you're plugged in to 120 volt AC shore power.

You mention your CPAP. It would be helpful to know if you're only powering it when plugged into 120V AC shore power. Or if you're "boondocking" without shore power are consequently are running the CPAP directly off the battery (12 volts DC) or using a DC to AC inverter to power the CPAP with 120V AC.

I use a CPAP machine that will run on 12 volts DC using an adapter cord sold by the CPAP manufacturer. (Many CPAP machine power supplies used at home just convert 120V AC to 12V DC before connecting to the machine. You'll save money and battery charge in that situation by using the 12V adapter to run directly off your battery.) I generally don't use the CPAP humidifier when running on battery power because the humidifier uses a heated plate that uses even more electricity than does the blower fan in the main CPAP unit.

I bought a Group 27 battery (12.0625 x 6.8125 x 8.875 inches nominal size) that fits fine under my Hawk front seat. It's rated at 110 amp-hours which is a bit of a boost from your typical Group 24 battery (75-80 amp-hours). I made sure to get a true deep-cycle battery and not one of those marine deep cycle batteries that is sold to boaters who need something to both start their boat engine and run their electronics. Expect to spend about $300 on a name-brand Group 27 AGM deep-cycle battery.

You don't want to regularly use more than 50% of an AGM battery's capacity before recharging it if you don't want to shorten its life. In my case, 50% of a 110 amp-hour battery is a useful capacity of about 55 amp hours. My CPAP draws 10-12 amp hours per night. So I can get 3 nights of CPAP use (plus all the other lighting and cell phone charging, but no furnace) without dropping below 50%.

So, tell us a bit more about your system and we may be able to give you better-tailored advice and information.

Ed

A. Smith, To best answer your questions, we need more information about your current battery, charging and loads. It seems that you have a single Group 24 AGM battery that's lasted you for 6 years (that's really good). The "controller" you mention is probably a 120 volt AC to 12 volt DC converter that powers your lights and other DC loads - and charges the battery - when you're plugged in to 120 volt AC shore power. You mention your CPAP. It would be helpful to know if you're only powering it when plugged into 120V AC shore power. Or if you're "boondocking" without shore power are consequently are running the CPAP directly off the battery (12 volts DC) or using a DC to AC inverter to power the CPAP with 120V AC. I use a CPAP machine that will run on 12 volts DC using an adapter cord sold by the CPAP manufacturer. (Many CPAP machine power supplies used at home just convert 120V AC to 12V DC before connecting to the machine. You'll save money and battery charge in that situation by using the 12V adapter to run directly off your battery.) I generally don't use the CPAP humidifier when running on battery power because the humidifier uses a heated plate that uses even more electricity than does the blower fan in the main CPAP unit. I bought a Group 27 battery (12.0625 x 6.8125 x 8.875 inches nominal size) that fits fine under my Hawk front seat. It's rated at 110 amp-hours which is a bit of a boost from your typical Group 24 battery (75-80 amp-hours). I made sure to get a true deep-cycle battery and not one of those marine deep cycle batteries that is sold to boaters who need something to both start their boat engine and run their electronics. Expect to spend about $300 on a name-brand Group 27 AGM deep-cycle battery. You don't want to regularly use more than 50% of an AGM battery's capacity before recharging it if you don't want to shorten its life. In my case, 50% of a 110 amp-hour battery is a useful capacity of about 55 amp hours. My CPAP draws 10-12 amp hours per night. So I can get 3 nights of CPAP use (plus all the other lighting and cell phone charging, but no furnace) without dropping below 50%. So, tell us a bit more about your system and we may be able to give you better-tailored advice and information. Ed


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#6 A.Smith

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Posted 27 January 2020 - 05:00 AM

Thanks,

Seems a Group 27 AGM, Deep Cycle is what I need.

As I am trying to understand my system, I am reading a bunch. But since my CPAP is my biggest draw, a quality battery should work. Especially since my DCM0035 has lasted over 6 years.

As I don't utilize hook ups, everything is off battery. My CPAP utilizes a direct  DC supply.

Now I just need to figure out which brand of Battery to purchase.

Oh the Adventures

A.Smith


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