![LDA® Activation Card for EN54-4 Battery Charger [LDAONEBC1S01]](http://en-shop.sysaway.com/cdn/shop/products/LDAONEBC1S01_grande.png?v=1706628558)
Reference:
LDAONEBC1S01
EN 54-4 Battery Charger Upgrade and Activation Card for ONE-500. Once activated, the card becomes a key for the charger to work permanently.
