After a long while of not being charged the battery will have become depleted beyond recovery and will have to be replaced.
You could try leaving the headphones on charge for 1-2 hours to see if this kick starts the battery back into life again. If it does, allow it to fully charge before attempting to turn the headphones on.
If it doesn't then here's a [link|https://www.youtube.com/watch?v=-qpdqd5HUTU|video] that may help.
Unfortunately it doesn't go quite the whole way as to how to actually replace it but I'm guessing that soldering will be involved. It is still useful though as it gives details regarding the battery, so a suitable replacement can be found.
It is a 3.7V 750mAH 523450 LiPo battery
The 523450 info is the dimensions of the battery.
The convention used by battery manufacturers is that the first 2 digits is the depth (or height) in millimetres but ''without a decimal point shown'', the next two digits are the width in millimetres and the last two digits are the length in millimetres.
For your battery 523450 = 5.2mm H x 34mm W x 50mm L.
Searching online for a ''523450 3.7V LiPo battery'' I found this [link|https://www.ebay.com/itm/404064151243?hash=item5e1419a6cb:g:tWAAAOSwEzJjopaj&amdata=enc%3AAQAHAAAA0IEeRENX7A%2BklTd4mmMTkygIz7sdfffowhgCRROEQlpWLqqrUMt8Xhohwdmc0NNZDxIy%2FKwQgK0Er6E75UqVBcPMlhuCATNlx%2F0jNcscAsQCpioifcH8K2kruPMeplcLB3Kcp%2BuoJriQozR1oP2gUr7SfLR%2B3gfVHSSKMbq9tHybV4on2bPNUE56szpVRV6KPInKojB3wkKGAJlyf2s9NdmQSNk%2BdtSaXKLWpXvZHnhtiQgKx8NgCP55ywrg2TZsIkzQjJA6Yz0oO%2BFsOzC9dQk%3D%7Ctkp%3ABk9SR-qX95_mYQ|supplier].
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The battery has double the charge capacity of the original one in your headphones i.e. 1500mAH, and is the same physical size. So it should physically fit in the headphones and also the headphones should stay on for a lot longer when being used from the fully charged state. Conversely the battery will also take a lot longer to fully charge again.
+
The battery has double the charge capacity of the original one in your headphones i.e. 1500mAH, and is the same physical size. So it should physically fit in the headphones and also the headphones should stay on for a lot longer as compared to the original battery, when being used from the fully charged state. Conversely the battery will also take a lot longer to fully charge again when compared to the original battery.
There may be other suppliers that suit you better. Just search online using the same search parameters as above
After a long while of not being charged the battery will have become depleted beyond recovery and will have to be replaced.
-
Here's a [https://www.youtube.com/watch?v=-qpdqd5HUTU|video] that may help.
+
You could try leaving the headphones on charge for 1-2 hours to see if this kick starts the battery back into life again. If it does, allow it to fully charge before attempting to turn the headphones on.
-
It is useful as it gives details regarding the battery, unfortunately it doesn't go quite the whole way as to how to actually replace it but I'm guessing that soldering will be involved.
+
If it doesn't then here's a [link|https://www.youtube.com/watch?v=-qpdqd5HUTU|video] that may help.
+
+
Unfortunately it doesn't go quite the whole way as to how to actually replace it but I'm guessing that soldering will be involved. It is still useful though as it gives details regarding the battery, so a suitable replacement can be found.
It is a 3.7V 750mAH 523450 LiPo battery
-
The 523450 info is useful as this is the dimensions of the battery.
+
The 523450 info is the dimensions of the battery.
-
The convention is that the first 2 digits is the depth (or height) in millimetres but without the decimal point shown, the next two digits are the width in millimetres and the last two digits are the length in millimetres.
+
The convention used by battery manufacturers is that the first 2 digits is the depth (or height) in millimetres but ''without a decimal point shown'', the next two digits are the width in millimetres and the last two digits are the length in millimetres.
For your battery 523450 = 5.2mm H x 34mm W x 50mm L.
-
Searching online for a ''523450 3.7V LiPo battery'' I found this [https://www.ebay.com/itm/404064151243?hash=item5e1419a6cb:g:tWAAAOSwEzJjopaj&amdata=enc%3AAQAHAAAA0IEeRENX7A%2BklTd4mmMTkygIz7sdfffowhgCRROEQlpWLqqrUMt8Xhohwdmc0NNZDxIy%2FKwQgK0Er6E75UqVBcPMlhuCATNlx%2F0jNcscAsQCpioifcH8K2kruPMeplcLB3Kcp%2BuoJriQozR1oP2gUr7SfLR%2B3gfVHSSKMbq9tHybV4on2bPNUE56szpVRV6KPInKojB3wkKGAJlyf2s9NdmQSNk%2BdtSaXKLWpXvZHnhtiQgKx8NgCP55ywrg2TZsIkzQjJA6Yz0oO%2BFsOzC9dQk%3D%7Ctkp%3ABk9SR-qX95_mYQ|supplier].
+
Searching online for a ''523450 3.7V LiPo battery'' I found this [link|https://www.ebay.com/itm/404064151243?hash=item5e1419a6cb:g:tWAAAOSwEzJjopaj&amdata=enc%3AAQAHAAAA0IEeRENX7A%2BklTd4mmMTkygIz7sdfffowhgCRROEQlpWLqqrUMt8Xhohwdmc0NNZDxIy%2FKwQgK0Er6E75UqVBcPMlhuCATNlx%2F0jNcscAsQCpioifcH8K2kruPMeplcLB3Kcp%2BuoJriQozR1oP2gUr7SfLR%2B3gfVHSSKMbq9tHybV4on2bPNUE56szpVRV6KPInKojB3wkKGAJlyf2s9NdmQSNk%2BdtSaXKLWpXvZHnhtiQgKx8NgCP55ywrg2TZsIkzQjJA6Yz0oO%2BFsOzC9dQk%3D%7Ctkp%3ABk9SR-qX95_mYQ|supplier].
-
The battery has double the capacity of the original one in your headphones and is the same size. So it should stay on for a lot longer from being fully charged. Conversely it will also take a lot longer to fully charge again.
+
The battery has double the charge capacity of the original one in your headphones i.e. 1500mAH, and is the same physical size. So it should physically fit in the headphones and also the headphones should stay on for a lot longer when being used from the fully charged state. Conversely the battery will also take a lot longer to fully charge again.
There may be other suppliers that suit you better. Just search online using the same search parameters as above
Hi @saulibarra
After a long while of not being charged the battery will have become depleted beyond recovery and will have to be replaced.
Here's a [https://www.youtube.com/watch?v=-qpdqd5HUTU|video] that may help.
It is useful as it gives details regarding the battery, unfortunately it doesn't go quite the whole way as to how to actually replace it but I'm guessing that soldering will be involved.
It is a 3.7V 750mAH 523450 LiPo battery
The 523450 info is useful as this is the dimensions of the battery.
The convention is that the first 2 digits is the depth (or height) in millimetres but without the decimal point shown, the next two digits are the width in millimetres and the last two digits are the length in millimetres.
For your battery 523450 = 5.2mm H x 34mm W x 50mm L.
Searching online for a ''523450 3.7V LiPo battery'' I found this [https://www.ebay.com/itm/404064151243?hash=item5e1419a6cb:g:tWAAAOSwEzJjopaj&amdata=enc%3AAQAHAAAA0IEeRENX7A%2BklTd4mmMTkygIz7sdfffowhgCRROEQlpWLqqrUMt8Xhohwdmc0NNZDxIy%2FKwQgK0Er6E75UqVBcPMlhuCATNlx%2F0jNcscAsQCpioifcH8K2kruPMeplcLB3Kcp%2BuoJriQozR1oP2gUr7SfLR%2B3gfVHSSKMbq9tHybV4on2bPNUE56szpVRV6KPInKojB3wkKGAJlyf2s9NdmQSNk%2BdtSaXKLWpXvZHnhtiQgKx8NgCP55ywrg2TZsIkzQjJA6Yz0oO%2BFsOzC9dQk%3D%7Ctkp%3ABk9SR-qX95_mYQ|supplier].
The battery has double the capacity of the original one in your headphones and is the same size. So it should stay on for a lot longer from being fully charged. Conversely it will also take a lot longer to fully charge again.
There may be other suppliers that suit you better. Just search online using the same search parameters as above