many of the harbor freight battery's I have tested BEFORE use, have all tested HIGH, like AA batteries I got a few weeks ago all tested like 1.9 volts, I also test ALL batteries before installing any in any camera or item, nothing sucks more than p;lacing a camera out or going to use a flashlight you packed away to find it doesn't work due to bad batteries in it!
but maybe why HF batteries last long, they just start of HIGHER than many others I have! from brand names company's