3. Slide and hold the battery release latch to the release position.
4. Then slide out the battery from the battery bay.
5. If there is a SIM card, remove it after removing the battery pack.
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You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.