Renata Watch and Battery Tester

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Renata Watch and Battery Tester Renata Battery Tester is a cell tester as well as an Impulse Detector. This is a compact and rugged well tester. Tests silver oxide (1.55V) and lith ium (3V) batteries. Features a built in impulse detector which indicates with sound and light if the electronic portion of the watch is working and putting out a drive impulse to the rotor, without opening the watch. This device relies on the latest 3V technology and is powered by a Renata CR2430 lithium battery. Show more