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August 31, 2021 2 min read
Ring terminals offer an easy solution for car owners & mechanics for maintaining the electrical connections in a vehicle. Depending upon the size of your car and the specific connection to establish, you’ll have to find the right ring size terminals.
To make this easier for you, we’ll cover the size of the ring terminal here in this article.
The battery terminal sizes vary from car to car. But for a particular battery, the side terminals are the same. However, the terminals on the top side are different, with the positive ones being more prominent.
Generally, you’ll find a 10 mm ring size for your batteries. But 8, 11, 12, and 13mm are also available. For the positive terminal, the ring size of the bolt is 13mm.
The size of the car stereo plays a significant role in finding the right ring terminal size. 5/16 is the standard size for the bolts typically used in a variety of stereos and even in the other parts of the car. So, in most cases, you should be looking for this size.
The lithium battery for Tesla S battery module has a bolt of M8, so you’ll have to use a 5/16 terminal ring considering the US metrics.
For the marine battery, there are two posts. The size of the ring terminal depends upon the negative and positive terminal points. A 3/8"-16-threaded post is appropriate for the positive terminal, whereas a 5/16"-18-threaded post works for the negative terminal.
Just like the other car and battery connections, the terminal ring size for the car wires vary. The most essential role here is played by the wire quality.
For a 12-10 gauge wire, 5/16 terminal ring size works perfectly.
Having the appropriate ring size as a guide, you can save a lot of your time and hassle and establish a strong connection with great ease.