How to judge the quality of a R6 Carbon battery and how to disassemble it?

　　If you want to judge the quality of a R6 Carbon battery, you can judge it by detecting the density of the electrolyte, the degree of discharge, and the height of the battery electrolyte level. In addition, when disassembling, first loosen the nut of the negative electrode connector, then disassemble the negative electrode connector, disassemble the positive electrode connector, etc. The series of processes will be introduced in detail below.

　　1. How to judge the quality of car batteries

　　1. Through the detection of automobile battery electrolyte level height

　　The electrolyte level can be checked with a glass tube. Under normal circumstances, the electrolyte level should be 10~15mm higher than the plate. The liquid level of the new battery can be observed through the height indicator line on the side. The electrolyte is insufficient and the drop in the liquid level is confirmed to be caused by splashing of the electrolyte.

　　Distilled water should be added below.

　　2. Detect the degree of discharge through electrolyte density

　　The degree of discharge can be roughly estimated by measuring the density of the electrolyte. Under normal circumstances, every 0.01g/cm2 decrease in the density of the electrolyte is equivalent to 6% battery discharge. Note: The measured density of the electrolyte needs to be converted into a density value at 25°C for judgment.

　　3. Determine the quality of the battery by detecting the discharge level of the battery

　　①Static electromotive force detection to determine whether the battery is good or bad

　　If the battery has just been charged or the car has just been driven, the high beam should be turned on for 30 seconds to eliminate the "superficial" phenomenon, then turn off the headlights and cut off all loads. As shown in Figure 1.3, use a multimeter to measure the open circuit electromotive force of the battery. If the rated voltage is 12V and the measured voltage is less than 12V, it means that the battery is over-discharged; if it is measured between 12.2 and 12.5V, it means that it is partially discharged; if it is higher than 12.5V, it means that the battery has sufficient power.

　　② Load test to determine whether the battery is good or bad

　　The best way to test the performance of lead-acid batteries is the load test, which requires the battery to be tested to store at least 75% of the electricity. If the density of the electrolyte is lower than 1.22g/cm2, and the static electromotive force measured with a multimeter is less than 12.4V, it should be fully charged first. for testing.

　　2. How to disassemble the R6 Carbon battery

　　1. Loosen the nut of the negative electrode connector: Open the two fixing buttons of the insulation cotton, and you can see the two red and black insulation covers on the positive and negative electrode connectors. Open the insulation cover and you can see the locking nut;

　　2. Disassemble the negative electrode connector: Use a wrench or hex socket to unscrew the fastening nut of the negative electrode, then use a flat-blade screwdriver to slowly pry open the fastening block, and then pull out the negative electrode connector;

　　3. Disassemble the positive connector: Use the same method to disassemble the positive connector;

　　4. Disassemble the locking strap: Unscrew the nut used to fix the battery's locking strap, loosen the locking strap, and then take out the battery.

　　5. When installing a new battery, just follow the reverse steps. However, it should be noted that the order of installing the positive and negative connectors is "positive first, then negative", which is opposite to that of disassembly. The principle is the same, both to prevent the risk of short circuit and ensure safety.

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