angardia :
geofelt :
You don't unless you bought it directly from dell.
Past that, many cheap laptop batteries are sold as "compatible" but they really are not.
To be safe, you want to buy original oem dell batteries.
Not to worry if your battery is working ok.
See if the run time fully charged seems to be ok.
Verify that it takes a charge.
i have no option to buy from dell as they dont sell in my country. i bought from a supplier who ordered from dell.
i have a 1 year warranty as well.
but is there really no option to see if this is new from the nylon ?
It looks like a legitimate dell battery.
You also got a warranty.
At some point you have to trust the seller.
If it came directly from DELL, it is undoubtedly new.