The batteries in the photo are basic in their covering and this is because they are not used as individual batteries and instead, are used in a group in items such as power tools.
They are lithium-ion batteries that use a better material to achieve a higher power density of 1800W/KG and because of this can have a 20W continuous discharge. 2000 charge/discharge cycles can be done and 99% of charge capacity can be reached in just 30 minutes.