Amazon.com: Universal Battery Checker Tester with Leads LCD Display, Battery Capacity Voltage Resistance Tester for AAA AA C D 9V Digital 12V 3.7V Li-ion 18650 CR123A CR2032 Button Cell Batteries More :
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Can I use these cells for anything(maybe a powerbank)? And what actually needs to be tested on them(and how to test with a multimeter)? I salvaged them from old laptop batteries. Charger
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Dlyfull Universal Battery Tester with LCD Display, Small Digital Battery Voltage Resistance Checker for Ni-MH, Ni-CD, Li-ion, Alk & LiFe04 Batteries(AA AAA C D 9V 12V 18650 CR123A 2CR5 CR2032 Cells): Amazon.com:
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Charge indicator circuit, multimeter red and black poles in the hands of man checking voltage and amps, 18650 blue batteries, gray background. Powerba Stock Photo - Alamy
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