As far as battery tester is concerned, there are plenty of important aspects that one needs to look into. Battery testers are highly efficient and important in checking through the working condition of a battery in some crucial power impacted performance setup. The finest quality battery tester would detect the power low situation in an effective manner thereby enabling one to take the right course of action quickly.
Make sure that the battery tester you are getting is of the finest quality like the one from Hioki which is an industry leader in this space for the past several years.