Possible to fix battery terminal?

[7evensails]

We have a Optima Yellowtop deep cycle AGM battery part. No. 812 254 0008883 for the starter motor on our sailing yacht.The battery output was always very reliable, till suddenly we could not start the motor anymore. I found out that the minus pole is inside corroded and broken off.

Has anyone experience if and how this can be fixed?

We would use it afterwards only for the board electricity.

[coopec43]

Have you looked at this link?


https://axleaddict.com/auto-repair/H...-terminal-post