St Matthew’s Convent, a St Mary building left empty for years, was targeted between Wednesday 3 and Thursday 4 January.
During the break and entry, two Makita brand batteries – largely used for power tools – and a charger were taken from the Rue Bechervais site.
Pictured: Two expensive batteries and a charger were taken from the building.
Police would like to hear from anyone who may have been offered the goods.
Anyone who witnessed the incident or has any information should contact Police on 612612 or anonymously via Crimestoppers on 0800 555111.