12V 30A Dual Input DC-DC On-Board Battery Charger with MPPT starter battery connection

[Doug Briggs]

I have purchased a 12V 30A Dual Input DC-DC On-Board Battery Charger with MPPT as part of my solar charging system for my truck. To provide charging of the house battery while driving to supplement solar charging, I need to connect a 8 AWG cable from the charger to the starting battery. My battery terminal connector has the main wire for starting and a white(ish) wire that runs to the fuse panel. Is the post on the connector that connects to the fuse panel adequate for connecting a second wire that will run to the charger?


Yes, I'll be cleaning that connector soon. ;-)

 

[James]

No idea, but for cleaning and coating electrical stuff, DeOxit is very good. I see they now have stuff for car battieries. I found out about the stuff years ago from an audio guy. Back when people used wires to connect components.

How to Clean and Protect Corroded Car Battery Terminals using DeoxIT - CAIG

Video tutorial on how to clean and protect corroded battery terminals in your vehicle. Over time battery terminals can become corroded and this can lead many problems such as improperly charging a battery, slow starting, low power output so the engine can turn over, and random electrical...

caig.com

 

[1Turn2Many]

Not an electrical engineer, but heck yeah, I’d use it.

 

[raytseng]

Yea. The number of amps for your power unit is small compared to the starter that is going through that junction that is good for several hundred to a couple thousand amps.

Concern and detail should be on making a good connection with a good ring connector and good crimp.

 

[Castle Dave]

I suggest you post your question on this Teton Gravity thread. Lots of RV electrical experts.

Ski RV's, who's sleeping in parking lots?

I know there are others with RV's, campers, vans, etc., so what'cha got? Mine's an '88 Toyota. Paid a thousand bucks for it last January. Spent 2 months in a parking lot in Montana. It was a huge upgrade from the back of the '88 4Runner, let me tell ya. Drove it up to Haines and back. I...

www.tetongravity.com

 

[raytseng]

On the subject of clean, to me, it looks pretty good. There isn't very much white or miscolored or crystal like growth and the metal looks smooth and not pitted or worn. Just a little bit at the post.

Seems like there is a layer of grease/protectant which is protecting the terminal. It just looks dirty due to accumulated dirt/soot on the grease, but the grease is doing it's job protecting from corrosion.

 

[DanoT]

I have already purchased a Renogy 60amp DC to DC battery charger for my Winnebago EKKO motorhome which is due to arrive in about a month. Also on order from Amazon are 2 inline circuit breakers, one will be installed near the starting battery and the other near the house battery. It might be a bit of overkill but they will protect the Renogy from an unwanted surge from either battery.

 

[DanoT]

I suggest you post your question on this Teton Gravity thread. Lots of RV electrical experts.

Ski RV's, who's sleeping in parking lots?

I know there are others with RV's, campers, vans, etc., so what'cha got? Mine's an '88 Toyota. Paid a thousand bucks for it last January. Spent 2 months in a parking lot in Montana. It was a huge upgrade from the back of the '88 4Runner, let me tell ya. Drove it up to Haines and back. I...

www.tetongravity.com

I have been subed to TGR's Ski-RV thread for several years as it is a great source for RVing-Skiing and is more respectful than some other TGR threads.