[bflat]

They're rated at charge cycles I think nowadays. I charged my WM1A about once a week (and a half depending) and unless I recall wrong the battery on the WM1A was rated to maintain the same level for 500 full charge cycles.

Full charge cycle is from 0% to 100%. Just use your battery with saver mode enabled and don’t go below 20% and it will last much longer.

 

[KuroKitsu]

Full charge cycle is from 0% to 100%. Just use your battery with saver mode enabled and don’t go below 20% and it will last much longer.

I charge at ~15%. Still better than my SE100, I eke every drop of battery between charges and it was needing a charge every 2 days or so.

 

[krayzie]

Just put the machine away with the battery charged at 40%. The Li-Ion battery shouldn't leak or expand if you keep the machine boxed in a cool area of storage away from the sun.

 

[ddmt]

Just put the machine away with the battery charged at 40%. The Li-Ion battery shouldn't leak or expand if you keep the machine boxed in a cool area of storage away from the sun.

Sounds right. The storage voltage for lipo is around 3.8volt. 40-50% should be around that voltage.

 

[HiFiGuy528]

Looking at the service manual for 1A and 1Z, it is not easy to change the battery.

I run on this practice... keep it juiced often but not for long and not above 80%. I have first gen iPhone, iPad, iPod all with strong battery still.

 

[Kitechaser]

Looking at the service manual for 1A and 1Z, it is not easy to change the battery.

I run on this practice... keep it juiced often but not for long and not above 80%. I have first gen iPhone, iPad, iPod all with strong battery still.

The battery is actually not that hard to take out, that is if you are handy with the soldering iron. Would take less than 15 minutes to swap it out

 

[djricekcn]

I'm having a bit of an issue with one album i'm trying to transfer over..
"it plays fine on foobar, it plays fine on Music Center, but when i transfer over it to the Walkman, I get something in the nature of "Cannot play, incorrect format" (original text is "再生できません未対応の形式です。)

It is a FLAC
8Bit, 96kHZ
24 bit

 

[Whitigir]

The battery is actually not that hard to take out, that is if you are handy with the soldering iron. Would take less than 15 minutes to swap it out

Agreed, but you better know what you are doing, otherwise it is hard and especially you don’t want to puncture or short out the battery. Where do people find service manual?

 

[Kitechaser]

Agreed, but you better know what you are doing, otherwise it is hard and especially you don’t want to puncture or short out the battery. Where do people find service manual?

I think it's on Sony's website. It has instructions on how to remove the back cover and the battery.
There are videos that show the process, very similar to the WM series.

 

[auronthas]

Full charge cycle is from 0% to 100%. Just use your battery with saver mode enabled and don’t go below 20% and it will last much longer.

Let's say weekly I charge my battery from 20% to 90% (battery saver mode) for a month, may i know how many full charge cycles will be counted?

 

[Whitigir]

I think it's on Sony's website. It has instructions on how to remove the back cover and the battery.
There are videos that show the process, very similar to the WM series.

That look easy on zx1, the WM is more complicated, but still easy enough. I don’t think you can find service manual at Sony website.

 

[nc8000]

Let's say weekly I charge my battery from 20% to 90% (battery saver mode) for a month, may i know how many full charge cycles will be counted?

That would be 4 charges of 70% each so my guess would be that it would count as almost 3 charge cycles if the math works that way

 

[gerelmx1986]

I'm having a bit of an issue with one album i'm trying to transfer over..
"it plays fine on foobar, it plays fine on Music Center, but when i transfer over it to the Walkman, I get something in the nature of "Cannot play, incorrect format" (original text is "再生できません未対応の形式です。)

It is a FLAC
8Bit, 96kHZ
24 bit

Can you elaborate? Why 8bit/24bit? Sony manual says flac 16 and 24 bit 44,1 to 384KHz

 

[Lemieux66]

Many posters are talking about battery power % - how do you know what % your battery is at? Mine just has four bars which gradually go down to zero with use. There is no % figure visible...

 

[Kitechaser]

That look easy on zx1, the WM is more complicated, but still easy enough. I don’t think you can find service manual at Sony website.

Here it is.
https://elektrotanya.com/sony_nw-wm1a_wm1z_ver.1.0.pdf/download.html#dl