I got this Canon battery charger to charge NB-13L batteries and because it does not require me to also carry a power adapter and cable to charge batteries. I just plug it into an electrical outlet using the attached plug. This makes travelling with this charger easy.
The charger has fairly small footprint and the plug on the back is recessed until it’s needed. When it’s time to charge a battery, the plug on the back just pops up and is plugged it into the wall outlet.
The charger does great charging Canon batteries and I have used it to charge generic NB-13L compatible batteries too. I have not encountered any issues doing this at this time.