FiiO M21 · 1 version · 38 samples
Android
13 Tiramisu
Battery
4000 mAh
Technology
Li-ion
Chipset
bengal
Memory
4/64 GB
Display
750x1286 (60Hz)
Model
FiiO M21
Estimated charging time
2h 30min
to charge 0 → 100%
Max charging temperature
41.8°C
average peak while charging
Screen-on time
7h 30min
estimated on a full charge
See your own charging speed, screen-on time and battery health in real time with Battery Guru.
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The Qti QUALCOMM FiiO M21 packs a 4000 mAh Li-ion battery and lasts about 155h 30min on a full charge with around 7h 30min of screen-on time. It charges from 0 to 100% in roughly 2h 30min, peaking near 41.8°C while charging. Every figure is aggregated anonymously from real QUALCOMM FiiO M21 owners using Battery Guru (38 samples), so it reflects everyday usage rather than lab claims.
Based on 38 anonymized samples from Battery Guru.
Aggregated Battery Guru data shows the Qti QUALCOMM FiiO M21 lasts about 155h 30min on a full charge, with roughly 7h 30min of screen-on time.
The QUALCOMM FiiO M21 charges from 0 to 100% in approximately 2h 30min, with charging temperatures peaking around 41.8°C.
The QUALCOMM FiiO M21 has a 4000 mAh Li-ion battery.
It is aggregated anonymously from real QUALCOMM FiiO M21 owners using the Battery Guru app (38 samples), reflecting real-world usage rather than manufacturer specifications.