New battery posts too small
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Junior Member
Joined: Jan 2017
Posts: 6
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From: PA
New battery posts too small
So I got a new "duracell" battery and the terminals are not tightening as if the posts are smaller than the old battery (interstate '14).
Has anyone else experienced this? Also I cannot find a replacement positive terminal cable.
Has anyone else experienced this? Also I cannot find a replacement positive terminal cable.
Senior Member
Joined: Oct 2018
Posts: 10,652
Likes: 232
From: Northern California
Battery terminals are basically universal. So that said if your battery connector is not closing securely some you are either doing incorrectly, your battery terminal leads are damage or the extreme chance your battery is ...auh... well... unusual?
Now had you had a vehicle sold in the USA pre 1985 then you could still buy battery terminal shims. But even then, if you needed them something was wrong with your cable connectors on your vehicle.
If it is a NO name or some off brand IDK but the top 15 Batteries sold in the USA and Canada are all universally the same terminal size.
A pet peeve regarding new and old members.... we don't have a crystal ball so try really hard when you need help to at least state the basic information.
Year
Millage
Now had you had a vehicle sold in the USA pre 1985 then you could still buy battery terminal shims. But even then, if you needed them something was wrong with your cable connectors on your vehicle.
If it is a NO name or some off brand IDK but the top 15 Batteries sold in the USA and Canada are all universally the same terminal size.
A pet peeve regarding new and old members.... we don't have a crystal ball so try really hard when you need help to at least state the basic information.
Year
Millage
Junior Member
Joined: Apr 2024
Posts: 6
Likes: 0
From: Vancouver
You can either replace the battery connections or you can buy electrical shims that fit. Alternatively you can channel your inner farmer mechanic and make some out of copper hammered flat then wrapped in there.
Senior Member
Joined: Oct 2018
Posts: 10,652
Likes: 232
From: Northern California
DO NOT use the battery shims. I repeat DO NOT use battery shims.
The ECU/PCM,TCM ODBDII and CANbus operating system do not like connectabilty issues that can and are often caused by battery terminal shims. Not to mention none computer control vehicles can cause ignition and charging instabilities.
Battery terminals if one looks are tapered and each post is a different size. When the shim compress during tightening, they do not make a full contact and act more or less insulating the best connectivity of electrical current and do support electrolysis leading to corrosive material on the battery terminal and cables.
Get the correct battery for your vehicle or look at why the listed battery for your vehicle is not fitting correctly. Battery application guides from the battery manufactures are almost never incorrect. Battery labeling however can be. Also, the installer may not be looking at all the reason why the recommended battery is not fitting.
The ECU/PCM,TCM ODBDII and CANbus operating system do not like connectabilty issues that can and are often caused by battery terminal shims. Not to mention none computer control vehicles can cause ignition and charging instabilities.
Battery terminals if one looks are tapered and each post is a different size. When the shim compress during tightening, they do not make a full contact and act more or less insulating the best connectivity of electrical current and do support electrolysis leading to corrosive material on the battery terminal and cables.
Get the correct battery for your vehicle or look at why the listed battery for your vehicle is not fitting correctly. Battery application guides from the battery manufactures are almost never incorrect. Battery labeling however can be. Also, the installer may not be looking at all the reason why the recommended battery is not fitting.
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