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:
How to test 18650 Lithium-ion battery capacity (mAh) | POWER GEN - YouTube
JS-C35 Battery Capacity Indicator 12V 24V 36V 48V 60V 72V 10-100V Li-ion Lead Acid Battery Tester with LCD Temperature Voltmeter - Walmart.com
GBM-3300 - Gw Instek - Battery Tester, Lead Acid, Li-Ion