Battery terminal bolt won't tighten after replacement
A stripped, cross-threaded, or melted terminal bolt prevents the clamp from securing properly, which can cause dangerous sparks, melting, and connection failures. Attempting to fix or replace it requires properly disconnecting the battery to avoid electrical hazards.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
- 1driving the car anyway since it still worksDid this help you?
- 2checking for accessories or parasitic drawDid this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“As I was tightening the negative clamp, it sparked and caught alight. It melted the nut off the bolt into my socket.”source ↗
“My question is what the hell happened? And also to replace the bolt, is disconnecting the negative terminal enough to start working on it?”source ↗
“unfortunately the positive terminal bolt will not re-tighten it is on tight enough that you need to pull it up and it isn’t just popping off, how dangerous is this to drive? And is this possibly a stripped or cross-treaded bolt that needs to be replaced?”source ↗
Where this came up
People with this problem also raised
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