Isolator for Charging Start and Auxiliary Lithium Battery

Question

Question:

I have a 100 Amp hour LiFePO4 battery in my RV and it will not start my onboard Onan generator due to the generator pulling over 100 Amps to start and the BMS turning the battery off. I was thinking of adding a starter battery for the generator but not sure how to charge it since different Lithium batteries should not be run in parallel and to charge them they would need to be in parallel. Any suggestions? Isolator? Capacitor? thanks

asked by: Bo F

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Expert Reply:

We have isolators like the Deka part # DW08771 which was designed for this situation. It will charge both batteries while also keeping them separate which means they wouldn't be in parallel.

expert reply by: Jameson C

0

Answer 1

You should change your breaker to a 30 amp breaker when installing the Curt Echo Mobile #C51180. 40 amps is good for protecting more than two axles but if you have a tandem axle trailer you'd want the breaker to trip at draws above 30 amps so…

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Answer 2

Installation of the Curt #C51180 Echo wireless brake controller calls for the use of a 30 amp breaker that comes with the #ETBC7. This is also the appropriate breaker for the 10 gauge wire used to run power to the 7-way.

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Answer 3

The Curt Echo Brake Controller part #C51180 is a great choice because of its convenient and simple installation. The 7-way connector that you mention part # A10-7084VP pugs into the 4-way connector you purchased part #C56217. The white wire from the…

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Answer 4

For your battery isolator similar to #DW08771, you will have connection posts for each battery and for an alternator. The main battery will connect to position one and the alternator to the A post. The second battery will attach to the 2 via a…

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Answer 5

I spoke with my contact at Camco who said that the Big Red Portable Gas Campfire #CAM58035 is only compatible with an auxiliary propane tank and should not be connected to your low pressure propane connection from your trailer. The Campco Big Red…

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Answer 6

I checked with Camco and the The little Red Campfire #CAM58031 is 9.81 (H) X 13(W) X 13(D) And the big Campfire #CAM58035 is 10 (H) X 14.60(W) X 14.60(D)

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Answer 7

If your 7-Way is not factory installed then you will need to make sure the blue and red wires under the hood at the power distribution box are connected. The red wire has a ring terminal and goes to the closest positive post in the power distribution…

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Answer 8

The Autowbrake brake controller part #3430001 that you referenced draws up to 15 amps. It's only going to draw amperage when the controller is activating the trailer brake so it would not be something you'd need to install an on/off switch on…

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Answer 9

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 10

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 11

To add a hitch to your 2024 Toyota RAV4, I recommend the etrailer item #e23ZR. This hitch is custom fit and bolts to your Toyota with included hardware. This is a class III hitch with a 2" receiver. It has a 4,000 lbs towing capacity, and a 600…

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Answer 12

There is only one difference between the Curt Trailer Hitch Receiver #C13176 and etrailer Trailer Hitch Receiver #e98909 that fit your 2020 Chevrolet Colorado, which is the finish. The Curt trailer hitch has a glossy black finish while the etrailer…

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Isolator for Charging Start and Auxiliary Lithium Battery

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