Samsung Debuts 1,200-Cycle Silicon-Carbon Batteries in Galaxy Z Fold 8 and Z Flip 8
Updated
Updated · Android Police · Aug 2
Samsung Debuts 1,200-Cycle Silicon-Carbon Batteries in Galaxy Z Fold 8 and Z Flip 8
3 articles · Updated · Android Police · Aug 2
Summary
Samsung’s first silicon-carbon batteries arrive in the Galaxy Z Fold 8 and Z Flip 8, helping fit 4,800mAh and 4,300mAh cells into slimmer foldable designs.
Silicon-carbon boosts energy density by replacing part of the graphite anode with silicon, which can hold far more lithium ions but can swell by up to 300% during charging.
EPREL filings rate the new cells at about 1,200 charge cycles to 80% health, down sharply from the 2,000-cycle rating Samsung achieved with the graphite battery in the Z Fold 7.
Samsung still markets seven years of Android and security updates, but standard battery coverage lasts 12 months; Care+ offers replacements below 80% capacity only for paying subscribers.
Chinese rivals are pushing harder on battery longevity—Xiaomi’s Redmi Note 17 Pro pairs a 9,000mAh battery with a free five-year replacement guarantee if health drops below 80% within four years.