I may be wrong but Lithium batteries should not need calibrating. @Digerati
I now realise that my post is confusing, in fact it is the gauge on the laptop that needs to be calibrated to any new replacement new battery.
Right on both counts. Calibrating is not really the correct word. Synchronizing may be more appropriate. I have to assume some marketing weenie decided to use calibrate way back when, and that just stuck.
What needs to happen is the laptop's battery monitoring circuits need to be "calibrated" to the battery. This is not really calibrating the "gauge" but rather the charge monitoring circuits to ensure the battery never gets over-charged and so it never gets discharged to 0%. Over-charging can cause excessive heat and damage the battery. And fully discharging can damage the battery too (which is why you can't go below 7%). Calibrating will also ensure it has enough charge left to leave enough time to automatically save what you are doing, then "gracefully" shutdown (or go into hibernate) before the battery runs out of charge.
It is important to note that the notebook has no clue the demands you will put on the battery in the next second, minute or hour. It only knows what is happening this second. So all times are best "guess" estimates.
Note that batteries (OEM or replacements) should be calibrated periodically. Check your laptop user manual for that.
Also, note that many laptops have a Battery Reset button. This is typically accessed with a straightened paperclip through a tiny hole in the bottom of the case (like the manual tray eject hole found in most optical drives). Again, check your laptop user manual.
All batteries weaken over time and some will never display 100% after they have aged some - depending on how they are used.
That said, one trick I have used that is sometimes successful is to run through the calibration process 3 times. Only this time, when the battery runs down, hibernates, then powers off the notebook, instead of plugging in the charger, try to power on the computer again. Keep trying to power on the computer until it refuses to power on. This typically takes 2 - 3 attempts after the battery first runs down.
Then connect the charger until it tops off. Hopefully, after the 2nd or 3rd cycle with this process, it will go to 100% on your gauge. If it never does, I would contact Laptopsandspares.com and see if they will replace it.
BTW, what are your runtimes? That is, once it fully charges (or goes to 98%) do you seem to have the expected amount of battery run time before the battery charge runs out?
Also, why did you replace the battery in the first place?