Ans. Lithium batteries undoubtedly have the highest energy density when compared to other batteries. Amongst them, the lithium iron phosphate battery is the safest and the long-lived type. Although it has a comparatively lower energy density than lithium cobalt oxide batteries, it is less prone to thermal runaway. Not only that, but it also has a very flat discharge curve and the longest life than any of the lithium chemistries. However, you should have proper maintenance by following good charging practices and moderate temperature conditions