Depending on the type of battery, the choice of flashlight has different criteria.Most battery manufacturers use different materials and types of batteries to remember different customers.There are many large, medium and small manufacturers making batteries at different price ranges and sizes.1.You must select the manufacturer according to your budget and use.According to the specifications, there are many brands of flashlights on the market.2.The flashlight has different standards, such as the size and shape of the battery, flashlight, etc.Specifications or brochures are required to select the right flashlight.3.When purchasing a flashlight, you must see the flashlight manufacturer give, guarantee or warranty.4.You must see that the flashlight manufacturer can change the flashlight according to the customer's needs.5.There are many companies offering replacement if the parts are replaced.There are many companies that offer parts replacement as needed.Better flashlights require high quality battery and power capacity.You have to see if the battery switch is working properly.You must take a trial test before buying a flashlight.You must keep the warranty card and address of the store properly, so the manufacturer should handle it if any problems arise.If you are a regular user then you will definitely prefer rechargeable batteries.This saves money.There are fewer flashlight batteries on the market;You can also purchase batteries based on your usage