What is the button battery L754?
Battery AG5 LR754 L754 detailed introduction:
AG5:
Standard voltage 1.5V, end voltage 0.9V. Discharge with 1KΩ discharge
resistor, continuous discharge for 800 hours. Working capacity 60mAh,
weight 0.72g. Load resistance 22K. Different names for the same product:
AG5;L754;393;RW48; V393.