Greetings @adil_sayed.
Thanks for posting in our community.
I understand that you are looking for a compatible battery that you can use for your system model. As shown in our support website, there are multiple battery part numbers that you can use for your laptop. Kindly check the list below:
5B10M86148
5B10M86149
5B10M90490
5B10M91443
5B10M91442
5B10M88058
5B10M88059
If the battery that you are planning to use is not included on the list above, it is not compatible with your system. Please visit this link for you to see the list of batteries and part numbers for reference: (click Machine Type, under Commodity Type, select Rechargeable Batteries , internal) https://pcsupport.lenovo.com/bd/en/products/laptops-and-netbooks/300-series/320-15ikb/80xl/parts/display/compatible.
You can check with third party online resellers regarding the availability of the replacement battery or check with other local computer shops in your area and inquire if they are selling spare battery. Just make sure to use the part number(s) that I shared for reference.
Please feel free to browse the useful links below regarding parts and parts purchase.
How to Find and Buy Parts and Accessories: https://support.lenovo.com/solutions/ht036683-how-to-look-up-and-purchase-accessories-upgrades-and-frucru-replacement-parts
Enter your machine type model / MTM (ex. 81C70000RK or 20UD000BUS) in the search bar from this link to find the compatible laptop accessories for your system model: https://smartfind.lenovo.com/#/country-language
If you are planning to repair the system by yourself, you may find the part numbers for your machine after typing in the serial number or the type number in this link: https://support.lenovo.com/partslookup?cid=all:apps:hxatlt
You can also use this link to find the nearest authorized service center in your area: https://support.lenovo.com/us/en/partnerlocator
Regards,
Rodney_Lenovo