Is this the battery? It is a common type used one Dell and other laptops. You should be able to get an equivalant from a distributor.
Living in a developing ncountry, other resources may be needed. A technician may be able to replace the indicidual cells i n the unit. Her e In North America it would be foooish, but in other places it is the most pratical solution.
Regulations in your country may prohibit importation by air mail, but this type of materiel, replacement lithium cells, can be obtained by ground transport. Check with local technicians. Some surely have experience in replacing or rebuilding lithium battery packs. Do not underestimate the skills of technicians in developing countries. They learn how to innovate when a quick fix is not available. Also, it is not always necessary to nave the exact voltage and current ratings for a substitute battery pack. The laptop has internal regulators that allow variations in battery level.
Some laptops do not work well when the battery pack is removed, so getting a replacement pack is desirable. Also, in some areas mains power is note reliable. Having a good battery pack is a good investment.