mechanics.tradeBattery security
Testers wrote battery security down 171,767 times during 2025, 36th on a list of 265 kinds of defect.
171,767recorded in 2025
0.6%of all recorded defects
36thon the national list
What it is
The battery has to be held down properly and free of leaks, and its wiring must be sound. This is about it being safely mounted, not about whether it still holds a good charge.
What the tester can write down
| Wording on the certificate | Category | Recorded in 2025 |
|---|---|---|
| A battery insecure but not likely to fall from carrier | Minor | 143,422 |
What you can do about it
A missing clamp is a surprisingly common cause and is cheap to put right. Check the terminals are tight and free of the white powdery deposit that builds up on older batteries.
Nearby on the list
Every defect on the list, from 42,728,066 MOT tests in 2025.