Laptop battery provides long time backup. As time goes on the battery cell becomes weaker so battery replacement is required to keep the maximum backup all the time. The battery of most laptops is China battery so it can be replaced very cheaply within 1000 Taka. However, the original laptop battery is also available in Bangladesh in that case you have to match the brand and model. Below are some tips to buy the perfect battery.
1. LiON and Li-Poly batteries are the best batteries for laptops
2. 5000 mAh battery is good for all types of laptops
3. Match the input pin otherwise it will not work at all
4. Check if the battery has any warranty
5. The minimum charging cycle should be 500