The voltage of the dry battery is 1.5V, therefore, you […]
The voltage of the dry battery is 1.5V, therefore, you can choose to test the performance of the dry battery with two discharge methods: 0.2C (ie 0.3A) small current discharge or 0.5C (about 0.8A) high current discharge. From a practical point of view, since most of the electrical appliances using dry batteries output current at 0.8A, discharging with a large current is closer to testing the performance of dry batteries.
There are also many devices for testing dry batteries on the market, all of which are electronic load meters. However, for most power sources, testing with Chroma electronic load meters is the current method. The reason is also simple. In terms of test tools, it has more accurate current control capabilities, so it can be better guaranteed in terms of test accuracy.
Generally, manufacturers with strict power requirements will use an electronic load meter to detect the quality of the power supply. It has many functions. It can adjust the load size of the 5th and 7th batteries and the current and voltage of the 1.5V dry battery, detect overcurrent, short circuit and Dynamic process, etc., all power supply manufacturers will use, and must have.
Common dry batteries include carbon batteries, alkaline batteries, lithium iron batteries, silver oxide batteries, etc. The current, voltage and configuration of these batteries are different. The termination voltage of the most typical carbon batteries and alkaline batteries is generally set to 0.9V, but carbon batteries can be discharged in groups of four on the test equipment. The dry battery test adopts the method of constant current discharge, that is, 0.8A current discharge.