The short answer is no. However, our best advice is to go for a power bank that overall has a higher battery capacity than that of our device as well as to always invest in well-known or respected brands that have good customer feedback. Also, it’s a good idea to look for an external power source that comes with multi-protection features so that your devices won’t get damaged while being charged. Most of the best portable power charges feature important safeguards against potential issues like short-circuiting, over-charging and over-heating for example.\r