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Testers designed to determine the electrical conditions (state of charge and/or capacity of being charged) of rechargeable batteries (e.g., nickel-cadmium, lead-acid, lithium). These testers usually can identify battery defects, display deficiencies, and determine the charge energy required and the useful ampere-hours in the battery. Some battery testers can automatically recognize the type of battery and analyze the battery accordingly using preprogrammed values of electric current and/or voltage.
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