B21Bn91 Battery, S$66.88 Li-ion Rechargeable ASUS B21Bn91 Batteries

Question about the B21Bn91 laptop battery:

Seven factors that determine laptop battery quality:

• 1. Whether using high-quality, long-life, or branded battery cells.
• 2. Whether the original or compatible original battery charging and discharging protection board scheme is used.
• 3. Whether a fine shell mold and shell material meeting fire protection requirements are used.
• 4. Whether drop-proof, shock-resistant materials and assembly processes are used, and have passed the test.
• 5. Whether it has passed the actual charge and discharge test.
• 6. Whether it has passed the original computer compatibility test.
• 7. Whether it has passed multiple international battery safety standard certifications.

How to choose the correct laptop battery?

• 1. Use the exact laptop model or laptop battery model to search for the battery, do not search with abbreviations or substitution characters.
• 2. Take out the original battery, carefully check the battery model, voltage, capacity.
• 3. Carefully check the appearance and shape of the battery, including interface location, fixed screw hole location, number of wires...
• 4. Carefully read the compatibility information of the battery to ensure that the battery to be purchased is compatible with or replaces the original model.
• 5. Provide the correct machine model and battery model when purchasing.
• 6. Keep the mail unblocked, easy to buy the wrong battery order, our customer service staff will contact you by mail.
• 7. If you are not sure whether you have purchased the correct battery, you can email us the photo of the original battery or the model of the machine.