The cost of battery replacement for a Redmi Note 9 at the official service center may vary depending on your location and the service center's pricing policies. However, on average, the battery replacement cost for Redmi Note 9 is around PHP 1,500 to PHP 2,500. But, if your phone is still under warranty, you might be able to get the battery replaced for free or at a discounted price.
It's important to note that dropping your phone multiple times can cause internal damage, including to the battery. It's best to handle your phone with care and avoid dropping it to prevent further damage.
