NiMH Lead-acid Button 100V Lithium Battery Bottle Internal Resistance Tester 1. Sine wave measurement effectively eliminates the influence of test leads and contact resistance 2. Two functional interfaces, battery sorting function 3. Built-in 100mAh battery, low power consumption + multiple energy-saving options 4. Test range up to 200 ohms 5. Good accuracy, fast response, both positive and negative can be measured, high sensitivity 6. Adjustable range, easy operation 7. Bilingual option, fully meet the use requirements 8. Lithium battery voltage can be displayed as 0.0001V, sensitive response 9. All ranges are positive and negative voltage measurements, the range can be selected as automatic or manual program control according to your needs, easy to operate 10. Ordinary lead-acid batteries, lithium batteries, nickel-metal hydride batteries, nickel-cadmium batteries, lithium iron phosphate batteries and battery packs not exceeding 45V can be measured