Solder is a fusible metal alloy used to create a permanent bond between metal workpieces. Solder is melted in order to adhere to and connect the pieces after cooling, which requires that an alloy suitable for use as solder have a lower melting point than the pieces being joined. The solder should also be resistant to oxidative and corrosive effects that would degrade the joint over time. Solder used in making electrical connections also needs to have favorable electrical characteristics.
Do not buy their products. They are just trying to sell cheap Chinese products which seldom work. No ethics either.
Dear Mr Singh,
As already informed over email to you, these batteries are not drone batteries. These are regular LiPo batteries with a maximum discharge current of 2C, and charge current of 1C. Using them on drones cause irreversible damage to the battery.
Drone batteries have a high discharge rating, and can be found on our store. I am not sure how use of a product beyond its scope by the customer makes our company unethical. Good Luck with your future endeavours.