Only 8% of People Know how to Check Battery Correctly

Learn how to check your battery's health like a pro using the FNIRSI HRM10 Internal Resistance Meter. In this video, I’ll show you how to measure internal resistance, voltage, and determine if your battery is still in good condition or ready to be replaced. Works on lithium, LiFePO4, and lead-acid batteries. Fnirsi products in promotion now ! HRM-10:https://s.click.aliexpress.com/e/_oBI4Q4D