How to measure silver oxide battery voltage with multimeter
Our common small white button-type batteries are made of silver oxide in authentic batteries, while fake ones are replaced by lithium ions, so you can’t tell the difference. Although some of them are genuine goods, some of them are old goods on the hands of dealers. Batteries that are close to expiration or have expired will not be used in your watch or Erhu tuner.
1. Experience in using silver oxide batteries:
If the button battery is measured to be 1.5V or 3V, the watch can still work for several months after being charged once.
No matter how you charge it, if it is 1V higher than the battery or it gets too hot and the fluid bulges, it will be useless. It needs to be slightly warm. If the outer casing is too cold, it won't receive electricity. I have an electronic watch. I take it out to charge when it is shut down. It can still be used for two years. Once it is charged every month, I throw it away. Any dead button battery with a voltage of 1.2V can be recharged and used. For a mobile phone charger, cut off the plug and use a second plate tube in series to reduce the voltage to a 0.5V rechargeable button battery that is higher than the original battery as needed. Use a clothes-drying wooden clip to clamp two thread ends for charging.
2. What type of multimeter should be used to measure the voltage of button batteries?
*The battery has positive and negative electrodes, the larger flat bottom is the positive electrode, and the small circle in the middle is the negative electrode.
＊Don’t use a digital meter to measure⚠️Why?
The digital meter picks up data amplified by weak signals. When measuring, the battery only supplies weak current and has a large internal resistance. The originally scrapped battery still shows a voltage value that is close to applicable. In fact, it can no longer carry the micro current of the watch, so This voltage is also considered a false intelligence, and the measurement does not match the usage.
When an analog multimeter measures a button battery, the working current flowing through the microwire on the meter head is much greater than the power consumption of the watch. In this case, the measured battery power is real, and it will not reduce the measured value after it is installed on the watch. voltage data. Any battery that reaches 1.2V will not rotate when installed in a watch, because an analog watch cannot run without a certain amount of power.
