Apple's iPhone Duo Battery Capacity Is Official at 4,883mAh

Apple's regulatory paperwork identifies the iPhone Duo's rated battery capacity as 4,883mAh. The figure appears in Apple's Product Information Sheet for model A3720, rather than in an independent teardown or battery test.

What Apple's document confirms

The filing labels 4,883mAh as the device's rated battery capacity. It is a manufacturer charge-capacity rating, not an independent runtime measurement. The same entry lists battery endurance of 51 hours and 30 minutes per cycle under the EU energy-label method, plus at least 1,000 cycles at default settings.

The capacity is reported in mAh, a charge measure. Apple does not provide a watt-hour value in this entry, so converting it to Wh would require a stated battery voltage that is not supplied here. The two figures should not be conflated.

Dual batteries, but capacity is not endurance

Apple separately lists dual built-in rechargeable lithium-ion batteries. The 4,883mAh figure is the regulatory rating listed for model A3720, not a statement of each battery’s capacity or a guarantee of daily runtime. Apple's separate specifications page lists typical-use and video-playback figures, which depend on workload, display choice, network conditions and software.

Sources

• Apple Product Information Sheet (model A3720)
• Apple iPhone Duo product page
• Apple iPhone Duo technical specifications
• GSMArena report