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T-Spec Pos/Neg 4-Gauge Battery Terminal

Car battery terminal with two 4-gauge and two 8-gauge outputs

9 Reviews | 2 questions - 7 answers

Item # 12048BTPN

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Our take on the T-Spec Pos/Neg 4-Gauge Battery Terminal

Compact and heavy-duty

T-Spec designed this Pos/Neg battery terminal to be extremely compact, so you can make the battery connection for a 4-gauge power cable in almost any vehicle. The other outputs accommodate your vehicle's OEM factory wiring — and there's even room for upgrading that. This heavy-duty black nickel-plated brass terminal can be used on either positive or negative battery posts. Requires Allen head wrenches for installation. Warranty: 1 year.

Worked great.

Anonymous, Ridgeley, wv

What's in the Box:

  • Brass battery terminal
  • Liner ring

T-Spec Pos/Neg 4-Gauge Battery Terminal Reviews

Average Customer Review(s):

(9 Reviews)

T-Spec Pos/Neg 4-Gauge Battery Terminal

Anonymous from Ridgeley, wv on 5/6/2017

Crutchfield Customer Review (What's this?)

Worked great.



T-Spec Pos/Neg 4-Gauge Battery Terminal

Douglas from Mechanicsville, VA on 4/3/2016

Crutchfield Customer Review (What's this?)

I bought the optimum dual post battery and use this on the negative post for accessories works great, looks good. did have to do a little prying to get on the negative post. Not sure if it's just the size of the top post of the optimum battery. but will not fit the positive top post. Gave it a 3 ratings because I actually bought it for the positive post. If you have the smaller battery post it should work fine.



TSpec battery terminal

Brian T from Poynette, WI on 10/31/2015

Crutchfield Customer Review (What's this?)

I was very suprised by this terminal. Had the exact amount of holes and great construction. Also a plastic cover that was not shown in the pictures. Worked great and was just what I needed.

Pros: Quality construction, multiple wire ports

Cons: The sleeve for the negative terminal was too thin for my optima negative terminal and had to dig through my box of spare parts to find a different one.

TSpec battery terminal

Y7563 from Michigan on 2/22/2015

Crutchfield Customer Review (What's this?)

Good piece of gear. Metal sleeve from other review easily removed thus able to mount terminal on different battery poets with ease. Use metric Allen wrenches and works just fine.

Pros: Works fine.

Cons: N/A

Clean install

Teka from Texas on 2/19/2015

Crutchfield Customer Review (What's this?)

Makes for clean easy amp install.

Pros: My battery does not look cut up and ghetto.


Works great!!!

Pete S from La Miranda, CA on 8/30/2014

Crutchfield Customer Review (What's this?)

Greatest product for attaching more than 1 cable to battery.

Pros: Multipliable wire attachments

Cons: None

T-Spec terminal

122Viper from Lowell, IN on 3/8/2014

Crutchfield Customer Review (What's this?)

I had a bad battery and corrosion ate away the wiring so I needed a new connector. This is a nice product, but it did not fit my battery terminal. It was waaaay to tight. There is a sleeve in the clamp, and the fit was so tight it would not seat so I ended up using a rubber mallet to pound it down. Needless to say, the clamp screw was useless since it was now too small. Not like it's not on there tight though, but if I need it off, it'll have to be pried and I'll have to get a new connector. The allen wrench screws seemed a strange size or stripped. I have multiple sizes, and one fit two perfectly, one a bit loose, and the other screw the wrench just turned and the next size up was too large. Weird. I managed to get all the wiring in and tightened to the point where hopefully nothing will pop out, especially the one wire on the bottom. If that comes out, I'll have to pry this thing off to get to it and since it's a car wire, I could have a major issue if it comes out. Fine for now, but I'll be looking to replace it. Given my experience, I would not recommend this.

Pros: Decent construction

Cons: Bad fitment, screws not all sized properly.

Battery Adapter

foos57 from Stockton, CA on 11/17/2013

Crutchfield Customer Review (What's this?)

Nice and clean looking adapter to get power to my amplifier. Wish it had three 8-guage openings instead of two.

Pros: Easy installation and looks good.

Cons: None.

Battery Terminal should me a must

Israel from Puerto Rico on 6/23/2013

Crutchfield Customer Review (What's this?)

The best way to do things close to perfect, is installing battery terminals like these

Pros: clean



Hands-on research

Product Research


Overview: This package includes a T-Spec v12-series single battery terminal that can be used on the positive or negative post. The terminal is made of solid brass with a flat-black finish. It features two 4 AWG and two 8 AWG outputs. This battery terminal is equipped with set screws for a secure connection to the battery post (4mm) and to the wires (3mm). Two Allen wrenches (3mm and 4mm) are required to tighten or loosen the set screws.

Our Product Research Team

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Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Running two 8 ga. power lines for two amps, car has two factory 4/6 ga. main lines, seems like a much cleaner and better option than just clamping ring connectors to the factory battery connection.[ Rhett  Aug 14, 2017 ]
Nice tight connections and clean installs with these products[ Tyler  Oct 06, 2016 ]
I needed a terminal that would easily handle multiple power cables for amps, ignitition, starter.....[ Ashley  Dec 07, 2015 ]

2 questions already asked

The FACTORY cables connections will have to be cut and made to work with this new terminal. Just like you would do the aftermarket power wire.[ Brian  Jun 09, 2017 ]
If you have a top post battery this is the way i did it. if your wires connector screwing into the side of the battery like a lot of Chevrolet's do. Then DON'T use this info. Pull the wires out of the factory battery clamp. Then run them into the new battery Terminal. If you have to cut the factory clamp off, just strip the wires back and put the bare wire into the terminal.[ Douglas  Jun 09, 2017 ]
You simply remove the existing terminal from your vehicle's positive wire(s) (You may have more than one positive wire supplying the vehicle). Strip approximately 1/2" off the end of your wires so they are bare/exposed. Twist tightly. Insert the vehicle's wire(s), along with your newly installed positive wire into the openings of your new terminal. Tighten the allen screw down onto the inserted wire to make your connection. Slightly tug each wire to make sure you have fully inserted/anchored it. Place the terminal over your battery's positive post. Tighten the terminal to the post. Call someone who installs car stereos for assistance to complete the remainder of your installation.[ RONALD W  Jun 09, 2017 ]
I am not for sure, but probably not as it would depend on the height of your battery terminal.[ Bob  May 17, 2015 ]
I should have been more specific in my first reply, you can but it will damage the terminal. I wouldn't unless like I described in my first response.[ dipstick  May 17, 2015 ]
No, you would need a vehicle that has a remote jumper terminal like Chevy trucks and suv's or have a battery like a Optima with top and side posts.[ dipstick  May 17, 2015 ]
I'd say yes because the entire terminal is metal so therefore its conductive[ BRIAN  May 17, 2015 ]

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