Freego battery unrepairable?

Seanoge

Pedelecer
Jan 16, 2017
156
13
78
Gulval, Penzance
Unbelievable but this battery is still going strong!! it has been in storage a lot of the time, used occasionaly. But a problem today. She can't get the battery out. Turn the key a quarter turn an the bar retracts a bit then it's normal to push the key in and another quarter turn an the bar retracts completely . The key will not push in so cannot extract the battery.
 

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Seanoge

Pedelecer
Jan 16, 2017
156
13
78
Gulval, Penzance
tried this, no luck. Hit the bar with a hammer & chisel( light tap) and it freed it enough to get it out. Poured wd40 into it but key won't turn. I see a couple of screws suggesting it may be possible to dismantle the Lock?
Yes especially after the battery being condemed as unrepairable by a reputable Company.