Your new battery's voltage must match the original exactly (e.g., 11.1V vs. 14.8V). While minor differences like 10.8V and 11.1V are often acceptable, significant mismatches can permanently "fry" your motherboard.
Avoid the absolute cheapest generic batteries found on open marketplaces, as they often lack essential safety circuits and provide far less capacity than advertised. buy laptop battery
Some things to know when shopping for generic laptop batteries Your new battery's voltage must match the original
This determines how long your laptop lasts on a charge. It is safe to buy a higher capacity battery (e.g., upgrading from 4400mAh to 7200mAh), which acts like a larger fuel tank. Note that higher capacity often means more cells, making the battery heavier or bulkier. Where to Shop Safely upgrading from 4400mAh to 7200mAh)