fridge power

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REDARC_Ryan

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Traveler I

60
Puyallup, WA, USA
First Name
Ryan
Last Name
Thurston
I do have one question @REDARC_Ryan on the redarc website it says that the BCDC wont charge a LiPo/LiFePO4 battery in freezing conditions to avoid damaging the battery, but is this based off the battery's BMS? or is this a temperature probe on the BCDC 1225? I ask because i was looking at the newer battleborn batteries that have a built in heater circuit, so the battery can recieve a charge at freezing temps once the battery recieves signal vis internal BMS that it is above 32*F.... if I'm going to do this.. I'm doing it right... and the battle borns have a proven track record, and charge cycles are in the 3000+'s... not to mention they're SUPER light compared to conventional chemistry's and AGM's...

The temperature sensing on our BCDC*D products happens internally, when programmed for lithium batteries (Green and Orange wires Joined together) our minimum charging threshold is 32°F (0°C) and this is sensed within the charger itself.



When the charging profile is set for an AGM battery charging profile (Green and Orange wires separated), the BCDC*D minimum charging temperature threshold is -4°F (-20°C)



With the introduction of smarter Lithium internal BMS’s and internal heating elements, some people choose to place an on/off switch between the BCDC*D Orange and Green battery profile selection wires…



Image

This way, when experiencing extremely cold conditions, the on/off switch adjoining the Green and Orange wires is switched to off i.e. -4°F (-20°C) charging threshold and then can be switched back to on i.e. is 32°F (0°C) charging threshold once the temperatures have increased.



Often we have a work around of some sort!
 

scott17818

Rank I

Contributor III

210
Midcoast Maine
First Name
Scott
Last Name
Charlton
The temperature sensing on our BCDC*D products happens internally, when programmed for lithium batteries (Green and Orange wires Joined together) our minimum charging threshold is 32°F (0°C) and this is sensed within the charger itself.



When the charging profile is set for an AGM battery charging profile (Green and Orange wires separated), the BCDC*D minimum charging temperature threshold is -4°F (-20°C)



With the introduction of smarter Lithium internal BMS’s and internal heating elements, some people choose to place an on/off switch between the BCDC*D Orange and Green battery profile selection wires…



View attachment 194500

This way, when experiencing extremely cold conditions, the on/off switch adjoining the Green and Orange wires is switched to off i.e. -4°F (-20°C) charging threshold and then can be switched back to on i.e. is 32°F (0°C) charging threshold once the temperatures have increased.



Often we have a work around of some sort!
@REDARC_Ryan oh, ok awesome, that was my next question reguarding the batteries such as the battelborn with an integrated heater.. I would assume that batteries such as the battle-born / Weize / Espertpower and a few other have temperature shutoffs in the BMS that wont accept a charging voltage, and literally cut themselves off to incoming power when temps are below their set threshold.

another question is does the Redarc BCDC 1225 have the voltage spike to wake up a lithium BMS from a deep discharge state low voltage protection? or would I have to do something manually if the system were ever to drain below 10v?
 
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CG87

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OB1

Off-Road Ranger I

263
Pahrump, NV, USA
First Name
Chad
Last Name
Glasgow
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25458

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None
I like the Arkpak. I put a 120ah vmax tank in it. Charged with a Renogy 20amp mppt, and a 175 watt Renogy flexible panel when camped. When mobile, I plug the fridge and the Arkpak into a cigarette lighter port, the jeep has 3 front to back. The Arkpak has a 150watt inverter, not much, but plenty for the 50qt fridge, Tablet, phone, drone, and Anker battery packs. My battery stays in float cycle during the daytime even when it's cloudy. This set up also allows me to use it in my RV dry camping.
Running the 50qt Arb fridge/freezer alone with no solar input gets me 4 days with 30% battery left. The Arkpak has a 7 stage smart charger and plugging it into a 120 wall outlet takes it about 26 hours to go from the 30% to 100%. I highly recommend the vmax tank batteries. Also the 2 amp Genius on board charger for the jeep starter battery. I have extension cords running to my Jeep when parked at home. It's a hassle, but I'm not gonna be that guy, that gets stranded, if I can help it. Keep your batteries healthy... not only will they last longer, you know they are operational. I'm looking at the optima H6 battery that's out. Direct fit for the Jeep Jk, and is hybrid type, deep cycle and starting battery. 3 year warranty of course.
 

CG87

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OB1

Off-Road Ranger I

263
Pahrump, NV, USA
First Name
Chad
Last Name
Glasgow
Member #

25458

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None
I like the Arkpak. I put a 120ah vmax tank in it. Charged with a Renogy 20amp mppt, and a 175 watt Renogy flexible panel when camped. When mobile, I plug the fridge and the Arkpak into a cigarette lighter port, the jeep has 3 front to back. The Arkpak has a 150watt inverter, not much, but plenty for the 50qt fridge, Tablet, phone, drone, and Anker battery packs. My battery stays in float cycle during the daytime even when it's cloudy. This set up also allows me to use it in my RV dry camping.
Running the 50qt Arb fridge/freezer alone with no solar input gets me 4 days with 30% battery left. The Arkpak has a 7 stage smart charger and plugging it into a 120 wall outlet takes it about 26 hours to go from the 30% to 100%. I highly recommend the vmax tank batteries. Also the 2 amp Genius on board charger for the jeep starter battery. I have extension cords running to my Jeep when parked at home. It's a hassle, but I'm not gonna be that guy, that gets stranded, if I can help it. Keep your batteries healthy... not only will they last longer, you know they are operational. I'm looking at the optima H6 battery that's out. Direct fit for the Jeep Jk, and is hybrid type, deep cycle and starting battery. 3 year warranty of course.
Also with the Renogy 175 watt flexible panel, I just lay it on the roof rack, and I never adjust it. It performs great. The mppt controller does much better than a pcm. Free indef electricity in the field is amazing to me.
 

REDARC_Ryan

Rank 0

Traveler I

60
Puyallup, WA, USA
First Name
Ryan
Last Name
Thurston
@REDARC_Ryan oh, ok awesome, that was my next question reguarding the batteries such as the battelborn with an integrated heater.. I would assume that batteries such as the battle-born / Weize / Espertpower and a few other have temperature shutoffs in the BMS that wont accept a charging voltage, and literally cut themselves off to incoming power when temps are below their set threshold.

another question is does the Redarc BCDC 1225 have the voltage spike to wake up a lithium BMS from a deep discharge state low voltage protection? or would I have to do something manually if the system were ever to drain below 10v?
The BCDC*D’s are compatible to charge Lithium batteries from zero volts and capable of waking up lithium batteries which have ‘gone to sleep’
 

scott17818

Rank I

Contributor III

210
Midcoast Maine
First Name
Scott
Last Name
Charlton
WELL... after a lot of conideration, and looking at my tax return NOT returning...(I E-filed on Feb 21st, and got my state return, & 1st &3rd stimulus payment, but still have $5500 in income tax refunds in a holding pattern... thanks stimulus payments!). I have decided to go with a slightly cheaper solution.

replace stock battery 24F stock toyota battery with either a Group 31M X2 battery100Ah ($449), or a X2 group 27F AGM ($369) , wire a 6AWG cable to a 4 circuit blue sea fuse box in the passenger side bed cubby, and put a 12v cig plug, and 2 USB outlets up high just below the track system on my tacoma. for now it will serve its purpose.

Later I can add an AUX tray, and the BCDC charger, and move the battery over.... I have a trip coming up this month that I need the power back there for the fridge.. mostly driving during the day, but I need to know the fridge can last for at a minimum 10 hours. and the 40+Ah over stock battery of the X2 should do that.
 
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rsweet

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Huntington Beach, CA, USA
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Robert
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Sweet
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Running a Dometic CFX 75 on a Renogy premium MPPT with two 100w solar panels and a 100 ah iron phosphate lithium battery...zero issues....runs like it is plugged into A/C.
 

scott17818

Rank I

Contributor III

210
Midcoast Maine
First Name
Scott
Last Name
Charlton
Running a Dometic CFX 75 on a Renogy premium MPPT with two 100w solar panels and a 100 ah iron phosphate lithium battery...zero issues....runs like it is plugged into A/C.
This is my current setup (just got the new bed rack 2 weeks ago), I dont have anywhere to mount a solar panel at the moment, unless I am stationary (fold out type), or get the Cascadia VSS Panel (85w for tacoma hood).
1619780860794.png
 

ProtonDecay

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Right now I am rent free in your head
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Derek
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Riehl
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I have a similar setup: Ranger w RTT, CFX3-75 and this is what works for me:

1) Battleborn 100ah - regular (don't need the heated one for the amount of cold we will experience) - $899 from Battleborn (free shipping)
2) Renogy 40A DC to DC Charger - $170 from Amazon
3) Victron monitor (this was a waste - way overkill for my needs - much cheaper simple monitors available for <$20)
4) 12-way fuse block (again, overkill - a 6-way would have been fine for <$20)
5) A couple of Quick Charge 3.0 Cigarette Lighter Outlet Splitter, 12V USB Charger from Amazon $14 ea
6) A Box to put it all in that I made from scrap aluminum and rivets, some 4 gauge cable (could have gone 6 and saved a couple lbs) and some scrap 16g wire, nuts/bolts. Figure another $50 if I bought all the bits plus a cheap toolbox to put it in.

The box fits (barely) under my retractable bed cover. The CFX3 app will tell you your power usage over time - if you only want to power the fridge then 100Ah is probably overkill assuming you are driving for an hour or two every few days, but we have a couple of BiPAPs that pull 25-30Ah overnight. I watched the CFX app at first and confirmed that my fridge only pulls a few Ah per day (cooler weather so far) so I stopped using the app because I am not comfortable informing Dometic of my location all the time (and whatever else they pull).

At this point I've kind of stopped even thinking about it other than to confirm that the DC-DC charger lights up when I start the truck. Here are a couple pics - let me know if you want more.
DC-DC Charger in place.jpgBattery Box in place.jpg
 

scott17818

Rank I

Contributor III

210
Midcoast Maine
First Name
Scott
Last Name
Charlton
I have a similar setup: Ranger w RTT, CFX3-75 and this is what works for me:

1) Battleborn 100ah - regular (don't need the heated one for the amount of cold we will experience) - $899 from Battleborn (free shipping)
2) Renogy 40A DC to DC Charger - $170 from Amazon
3) Victron monitor (this was a waste - way overkill for my needs - much cheaper simple monitors available for <$20)
4) 12-way fuse block (again, overkill - a 6-way would have been fine for <$20)
5) A couple of Quick Charge 3.0 Cigarette Lighter Outlet Splitter, 12V USB Charger from Amazon $14 ea
6) A Box to put it all in that I made from scrap aluminum and rivets, some 4 gauge cable (could have gone 6 and saved a couple lbs) and some scrap 16g wire, nuts/bolts. Figure another $50 if I bought all the bits plus a cheap toolbox to put it in.

The box fits (barely) under my retractable bed cover. The CFX3 app will tell you your power usage over time - if you only want to power the fridge then 100Ah is probably overkill assuming you are driving for an hour or two every few days, but we have a couple of BiPAPs that pull 25-30Ah overnight. I watched the CFX app at first and confirmed that my fridge only pulls a few Ah per day (cooler weather so far) so I stopped using the app because I am not comfortable informing Dometic of my location all the time (and whatever else they pull).

At this point I've kind of stopped even thinking about it other than to confirm that the DC-DC charger lights up when I start the truck. Here are a couple pics - let me know if you want more.
View attachment 196679View attachment 196680
The only reason I was looking at the Redarc BCDC over the renogy, victron or others was that the Redarc is 1 sealed.. it can be mounted under the hood and be subjected to heat/water, dust... 2. it has options for solar charging with built in MPPT controller that i believe will handle up to 200w solar input. and has smart charging ability to handle flooded/AGM/ Lithium, LiFEPo4... 3. keeps the vehicle battery isolated. I am trying to keep my bed/cab as clean/factory looking as possible. this is my Daily driver, and at times need to accommodate 4 passengers.
 

ProtonDecay

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327
Right now I am rent free in your head
First Name
Derek
Last Name
Riehl
Member #

28397

The only reason I was looking at the Redarc BCDC over the renogy, victron or others was that the Redarc is 1 sealed.. it can be mounted under the hood and be subjected to heat/water, dust... 2. it has options for solar charging with built in MPPT controller that i believe will handle up to 200w solar input. and has smart charging ability to handle flooded/AGM/ Lithium, LiFEPo4... 3. keeps the vehicle battery isolated. I am trying to keep my bed/cab as clean/factory looking as possible. this is my Daily driver, and at times need to accommodate 4 passengers.
Yep, you gotta go with what works for you. :-)
 
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