Sony LIP-12 Li-ion Rechargeable Battery

Genuine Sony LIP-12 lithium-ion rechargeable battery. Quantity 1. New, factory sealed.
* Battery only. No other items or accessories are included in the sale. *

Summary:
Genuine Sony LIP-12 lithium-ion rechargeable battery.
New, old stock. Unopened and untested.

Product Condition (Appearance):
The clear plastic at the bottom-right hand corner of the front face is slightly bent upwards.
Aside from that, no callouts.

Product Condition (Functionality):
New, old stock. Unopened and untested.

Specifications:
Lithium-ion battery (Li-ion)
1350 mAh
DC 3.6 V

Product Information:
The LIP-12 battery is compatible with the Sony MZ-B3 (with dedicated case), MZ-E3 (with dedicated case), MZ-R2, MZ-R3 (with dedicated case), MZ-R30, MZ-R35, and MZ-R4ST. 

Note:
These batteries were manufactured around twenty years ago. When managed correctly they should continue to be functional, but this cannot be guaranteed.
Regular use of the battery is recommended for best results. 
Avoid discharging the battery completely, and recharge the battery when there is a small amount of charge remaining. In the case of portable MiniDisc devices, this is usually indicated by a flashing operation light, or flashing battery indicator on the inline remote control.
Aim to charge to around 40-50% of battery capacity if there are no plans to use the battery for some time. 
Avoid leaving fully charged without using as this will negatively affect the lifespan of the battery.

Hopefully this information is clear and covers everything you need, but don't hesitate to reach out if you have any questions.