The battery life is abysmal when playing music. Even with the applied system tweaks I can't leave the device in stand by for a day and expect it to retain a sufficient amount of charge. People on here get defensive and say why'd you buy it or why don't you sell it but that really isn't the point. The ZX507 battery life is not as advertised by Sony regardless of it's sound quality.
Note that there are a lot of factors regarding battery life:
Hi-Res files have a major impact, especially DSD
Sound adjustments (DSP, EQ, etc.) will affect battery life by up to 60% lower
High-Res streaming on, about 20% shorter
BlueTooth, online Streaming, also have major impacts
From the Manual:
For Non-EU model.
Stereo mini jack
MP3 (128 kbps)
Approx. 20 hours
AAC (256 kbps)
Approx. 20 hours
WAV (44.1 kHz/16 bit)
Approx. 20 hours
FLAC (44.1 kHz/16 bit)
Approx. 20 hours
FLAC (96 kHz/24 bit)
Approx. 18 hours
FLAC (192 kHz/24 bit)
Approx. 16 hours
DSD (2.8224 MHz/1 bit)
Approx. 10 hours
DSD (5.6448 MHz/1 bit)
Approx. 8 hours
DSD (11.2896 MHz/1 bit)
Approx. 6.5 hours
Balanced standard jack
MP3 (128 kbps)
Approx. 19 hours
AAC (256 kbps)
Approx. 19 hours
WAV (44.1 kHz/16 bit)
Approx. 19 hours
FLAC (44.1 kHz/16 bit)
Approx. 18 hours
FLAC (96 kHz/24 bit)
Approx. 17 hours
FLAC (192 kHz/24 bit)
Approx. 15 hours
DSD (2.8224 MHz/1 bit)
Approx. 9 hours
DSD (5.6448 MHz/1 bit)
Approx. 7.5 hours
DSD (11.2896 MHz/1 bit)
Approx. 4 hours
Bluetooth
MP3 (128 kbps)/SBC-Connection pref.
Approx. 11 hours
FLAC (96 kHz/24 bit)/LDAC-Connection pref.
Approx. 8.5 hours
BLUETOOTH:
A Bluetooth connection will shorten the battery life by up to 60% depending on the following conditions.
Format of the content.
Settings of the connected device.
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Note
The values shown in this topic indicate the approximate battery life when content is played under all of the following conditions.
The player is playing continuously with the default settings.
The playback app is Sony original music player app.
Even if the player is turned off for an extended period, a small amount of battery power is still consumed.
Battery life may vary depending on volume setting, conditions of use and ambient temperature.
The battery is consumed considerably when the screen is on.
The battery life may become about 60% shorter when some of the sound adjustments are active.
The battery life may become about 20% shorter when the [High-Res streaming] function is active.
The music app other than Sony original music player app may drain the battery faster than the above values.
5-006-039-11(4) Copyright 2019 Sony Corporation
The contents of the Help Guide may be subject to change without notice due to updates to the product's specifications.
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