Measure a conventional 12V battery with a multimeter
用万用表测量普通 12V 汽车电瓶
A non-invasive voltage check for conventional 12V systems—not hybrid or EV high voltage.
对普通 12V 系统进行不拆卸电压检查，不涉及混动或纯电高压系统。
Careful beginner · 10–15 min · CAT-rated digital multimeter
1. Identify only the 12V points
Use the manual to find the conventional battery or approved test points. Never touch orange high-voltage cables or open a battery case.
只识别 12V 测点
按手册找到普通电瓶或专用测点，绝不触碰橙色高压线，也不打开电瓶外壳。
2. Set the meter before connecting
Select DC volts in a range above 15V, leads in COM and V sockets. A current/A socket can create a dangerous short.
连接前设置仪表
选择高于 15V 的直流电压档，表笔插 COM 与 V 孔；误插电流孔可能造成危险短路。
3. Take resting and running readings
Red to positive and black to negative without bridging metal. Record after the car rests, then running only if the manual permits and hands remain clear.
读取静置与运行电压
红表笔接正、黑表笔接负，避免跨接金属；记录静置电压，手册允许且手远离旋转件时再记录运行电压。
4. Interpret as a clue, not a verdict
Temperature, recent charging and battery chemistry change readings. Low or unstable voltage needs a proper load/charging-system test.
只作线索，不作最终结论
温度、刚充电和电瓶类型都会影响读数；电压低或不稳定时需要专业负载与充电系统测试。