FiiO JM21 · 2 versions · 11 samples
Android
13 Tiramisu
Battery
3100 mAh
Technology
Li-ion
Chipset
bengal
Memory
4/64 GB
Display
750x1286 (60Hz)
Model
FiiO JM21
Android
13 Tiramisu
Battery
2400 mAh
Technology
Li-ion
Chipset
bengal
Memory
2/32 GB
Display
750x1286 (60Hz)
Model
FiiO JM21
Estimated charging time
1h 30min
to charge 0 → 100%
Max charging temperature
44.6°C
average peak while charging
Screen-on time
6h 0min
estimated on a full charge
Estimated battery life
32h 30min
estimated on a full charge
See your own charging speed, screen-on time and battery health in real time with Battery Guru.
Get Battery GuruSpotted a mistake?
Specs or numbers look off for the Qti QUALCOMM FiiO JM21? Let us know and we'll fix it.
The Qti QUALCOMM FiiO JM21 packs a 2400 mAh Li-ion battery and lasts about 32h 30min on a full charge with around 6h 0min of screen-on time. It charges from 0 to 100% in roughly 1h 30min, peaking near 44.6°C while charging. Every figure is aggregated anonymously from real QUALCOMM FiiO JM21 owners using Battery Guru (8 samples), so it reflects everyday usage rather than lab claims.
Based on 8 anonymized samples from Battery Guru.
Aggregated Battery Guru data shows the Qti QUALCOMM FiiO JM21 lasts about 32h 30min on a full charge, with roughly 6h 0min of screen-on time.
The QUALCOMM FiiO JM21 charges from 0 to 100% in approximately 1h 30min, with charging temperatures peaking around 44.6°C.
The QUALCOMM FiiO JM21 has a 2400 mAh Li-ion battery.
It is aggregated anonymously from real QUALCOMM FiiO JM21 owners using the Battery Guru app (8 samples), reflecting real-world usage rather than manufacturer specifications.