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Old 12-22-2024, 06:44 PM   #1
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Name: Stebe
Trailer: Casita
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Lithium Battery Charging from TV

Does anyone know which wires in the Casita closet go from the 7 pin Tow vehicle to the battery for charging?


I have a small Lithium Ion battery that I use to run my rather minimal electric needs and I want to charge it from the tow vehicle using an Orion-Tr 12 to bump the voltage to 14.4 Volts. I don't know which wires in the closet I need to intercept.


I know this topic has been discussed a bit but I cant find where anyone has addressed this.


Thanks.
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Old 12-28-2024, 11:19 AM   #2
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Originally Posted by swhird View Post
Does anyone know which wires in the Casita closet go from the 7 pin Tow vehicle to the battery for charging?

...
According to the Wiring diagram DI-1 in the "Casita Travel Trailer A-Z OWNER'S GUIDE", the black wire goes to the +12v terminal on the battery and the white wire goes to the negative terminal on the battery.
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Old 12-28-2024, 11:40 AM   #3
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Name: Ray
Trailer: Holidaire
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Originally Posted by swhird View Post
Does anyone know which wires in the Casita closet go from the 7 pin Tow vehicle to the battery for charging?


I have a small Lithium Ion battery that I use to run my rather minimal electric needs and I want to charge it from the tow vehicle using an Orion-Tr 12 to bump the voltage to 14.4 Volts. I don't know which wires in the closet I need to intercept.


I know this topic has been discussed a bit but I cant find where anyone has addressed this.


Thanks.

Be careful, there things you need to do: https://battlebornbatteries.com/char...ading-anchor-1
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Old 12-28-2024, 02:01 PM   #4
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Name: John
Trailer: 1977 Scamp 13
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Lithium Battery Charging from TV

You will need a DC-DC charger which run $100-$250 if you want to charge from your TV.
I have a 50 amp hour lithium battery running some lights, phone charger and occasionally hook up an inverter to charge a laptop. In cold weather I use a diesel heater which will run a couple 10 hour nights on a full charge.
I use a 100 watt solar panel with a charge controller that will charge my battery in a couple hours of sun to full after a night running the heater, longer if partly cloudy, of course. It is a simpler setup that cost me $100 total.
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Old 12-29-2024, 09:46 PM   #5
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Name: Stebe
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You will need a DC-DC charger which run $100-$250 if you want to charge from your TV.
I have a 50 amp hour lithium battery running some lights, phone charger and occasionally hook up an inverter to charge a laptop. In cold weather I use a diesel heater which will run a couple 10 hour nights on a full charge.
I use a 100 watt solar panel with a charge controller that will charge my battery in a couple hours of sun to full after a night running the heater, longer if partly cloudy, of course. It is a simpler setup that cost me $100 total.

This is very similar to what I'm doing. I have a 20AH Lithium battery that will last me several days even in light winter running the lights, a monitor, fridge electronics (on gas), water pump, and a little bit of heat. I'm able to keep it charged indefinitely with a 100 W solar.


Connecting the TV discharges my Lithium battery (unless I disconnect it) so I want to add the DC-DC.
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Old 12-29-2024, 09:47 PM   #6
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Mathhfam - Thanks. I will be careful.
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Old 12-29-2024, 09:49 PM   #7
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Originally Posted by LarryB. View Post
According to the Wiring diagram DI-1 in the "Casita Travel Trailer A-Z OWNER'S GUIDE", the black wire goes to the +12v terminal on the battery and the white wire goes to the negative terminal on the battery.

Thank You. The owners guide that I found showed wiring but the colors were not readable.
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Old 12-30-2024, 09:38 AM   #8
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Name: Bill
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Thank You. The owners guide that I found showed wiring but the colors were not readable.
Here you go
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