What’s the difference between a “new” and an “optimal” battery? 07 April 2026 08:48 Updated When choosing a refurbed device, you can select between two battery options depending on availability:Optimal: The existing battery still performs excellently and meets refurbed’s quality standards — no replacement needed, no extra environmental impact.Unless otherwise specified, the batteries in our products retain at least 80% of their original capacity, 85% for our smartphones, or 90% for our Premium grade.New: A new battery is installed by the seller, which ensures a completely new battery but involves additional resource use and emissions.Both options are fully tested and offer reliable performance. Related articles What do the warning messages "Important Message" or "Unknown Part" on my iPhone mean? Can my package be delivered to a package station or parcel shop? What payment methods are available? How do I pack the device I want to sell correctly? What battery capacity can I expect on refurbished devices?