你从来不看说明书，和适配器和电器上的额定电压和电流。 自己知识欠缺，非要踩上国产电器一脚，这不是有病吗？！ Using a charger with a higher voltage than a battery''''s labeled voltage can be dangerous and can lead to several issues, including battery damage, overheating, and even fire. A charger''''s voltage needs to be slightly higher than the battery''''s voltage to push current into the battery and charge it, but it should not exceed the battery''''s maximum charge voltage. Here''''s a more detailed explanation: Why Charger Voltage Needs to be Higher (but not TOO High) Driving Current: . Opens in new tab For current to flow into a battery and charge it, the charger needs to provide a higher voltage than the battery''''s terminal voltage. Charging Process: . Opens in new tab The charging process involves a voltage difference that drives the flow of current, effectively "pushing" energy into the battery. Why Higher is Harmful Battery Damage: . Opens in new tab Exceeding the battery''''s maximum charge voltage can lead to damage, such as internal damage, reduced lifespan, or even explosion. Thermal Runaway: . Opens in new tab Overcharging or charging with too high a voltage can cause a battery to overheat, leading to a dangerous condition called thermal runaway, where the battery''''s temperature continues to rise uncontrollably. Fire Hazard: . Opens in new tab Thermal runaway can potentially lead to a fire, especially with some battery chemistries. Safe Charging Practices Use the Correct Charger: Always use a charger that is specifically designed for the type and voltage of the battery you are charging. Follow Manufacturer Instructions: Consult the battery manufacturer''''s guidelines and specifications for recommended charging voltages and currents. Observe Voltage Limits: Never exceed the battery''''s maximum charge voltage, which is typically specified in the manufacturer''''s documentation. Monitor Charging: Pay attention to the battery''''s temperature and voltage during charging to detect any signs of overheating or overcharging. Safe Charging Environment: Charge batteries in a well-ventilated area, away from flammable materials, and in a safe location. In Summary While a charger''''s voltage needs to be slightly higher than the battery''''s voltage to charge it, exceeding the battery''''s maximum charge voltage can lead to dangerous and potentially disastrous consequences. Always prioritize safety and follow the manufacturer''''s recommendations when charging batteries.
laohua001 发表于 2025-05-16 10:15 你从来不看说明书，和适配器和电器上的额定电压和电流。 自己知识欠缺，非要踩上国产电器一脚，这不是有病吗？！ Using a charger with a higher voltage than a battery''''s labeled voltage can be dangerous and can lead to several issues, including battery damage, overheating, and even fire. A charger''''s voltage needs to be slightly higher than the battery''''s voltage to push current into the battery and charge it, but it should not exceed the battery''''s maximum charge voltage. Here''''s a more detailed explanation: Why Charger Voltage Needs to be Higher (but not TOO High) Driving Current: . Opens in new tab For current to flow into a battery and charge it, the charger needs to provide a higher voltage than the battery''''s terminal voltage. Charging Process: . Opens in new tab The charging process involves a voltage difference that drives the flow of current, effectively "pushing" energy into the battery. Why Higher is Harmful Battery Damage: . Opens in new tab Exceeding the battery''''s maximum charge voltage can lead to damage, such as internal damage, reduced lifespan, or even explosion. Thermal Runaway: . Opens in new tab Overcharging or charging with too high a voltage can cause a battery to overheat, leading to a dangerous condition called thermal runaway, where the battery''''s temperature continues to rise uncontrollably. Fire Hazard: . Opens in new tab Thermal runaway can potentially lead to a fire, especially with some battery chemistries. Safe Charging Practices Use the Correct Charger: Always use a charger that is specifically designed for the type and voltage of the battery you are charging. Follow Manufacturer Instructions: Consult the battery manufacturer''''s guidelines and specifications for recommended charging voltages and currents. Observe Voltage Limits: Never exceed the battery''''s maximum charge voltage, which is typically specified in the manufacturer''''s documentation. Monitor Charging: Pay attention to the battery''''s temperature and voltage during charging to detect any signs of overheating or overcharging. Safe Charging Environment: Charge batteries in a well-ventilated area, away from flammable materials, and in a safe location. In Summary While a charger''''s voltage needs to be slightly higher than the battery''''s voltage to charge it, exceeding the battery''''s maximum charge voltage can lead to dangerous and potentially disastrous consequences. Always prioritize safety and follow the manufacturer''''s recommendations when charging batteries.
查了一下，USB C还真不一样 USB Power Delivery (PD): Many USB-C chargers use the USB Power Delivery protocol, which allows them to negotiate power levels with the connected device. This ensures that the charger provides the correct voltage and current for the device. Default USB-C Ratings: If a device doesn't have a PD-compatible chip, it will still charge at the default USB-C ratings (5 volts, up to 3 amps). No Damage: As long as the charger provides the required voltage and current, and the device is USB-C compatible, there's usually no risk of damage.
回复 1楼 forger3 的帖子 USB C voltage is negotiated between the charger and the device, with typical values being 5V, 9V, 15V, and 20V, and even higher with EPR (Extended Power Range). EPR can reach 48V. 小电风扇 does not have the chip that replies to the charger's inquiry what voltage to use, the charger will deliver default voltage for mac.
还好人在旁边，想充的快一点没用电扇原配的充电器。 估计国产的为了成本，却一些保护控制的单元。
她说的肯定是USB-c ， 变压之后的。
不是，国内小电器充电有些确实不过关，一般都是110-240
我回国和朋友出门，他们都说出门前把在充电的都拔了
电器确实有不过关的
但是，这个事，事楼主的电器知识不过关啊！
lz有啥不过关，不就是同样头的插头，充个不同的东西吗，有问题吗
谁家几个手机一样插头的，还换充电器？
就是以后多个警惕，有人在家还好，出门把在充电的都拔了
你从来不看说明书，和适配器和电器上的额定电压和电流。
自己知识欠缺，非要踩上国产电器一脚，这不是有病吗？！
Using a charger with a higher voltage than a battery''''s labeled voltage can be dangerous and can lead to several issues, including battery damage, overheating, and even fire. A charger''''s voltage needs to be slightly higher than the battery''''s voltage to push current into the battery and charge it, but it should not exceed the battery''''s maximum charge voltage.
Here''''s a more detailed explanation:
Why Charger Voltage Needs to be Higher (but not TOO High) Driving Current: . Opens in new tab For current to flow into a battery and charge it, the charger needs to provide a higher voltage than the battery''''s terminal voltage. Charging Process: . Opens in new tab The charging process involves a voltage difference that drives the flow of current, effectively "pushing" energy into the battery. Why Higher is Harmful Battery Damage: . Opens in new tab Exceeding the battery''''s maximum charge voltage can lead to damage, such as internal damage, reduced lifespan, or even explosion. Thermal Runaway: . Opens in new tab Overcharging or charging with too high a voltage can cause a battery to overheat, leading to a dangerous condition called thermal runaway, where the battery''''s temperature continues to rise uncontrollably. Fire Hazard: . Opens in new tab Thermal runaway can potentially lead to a fire, especially with some battery chemistries. Safe Charging Practices Use the Correct Charger: Always use a charger that is specifically designed for the type and voltage of the battery you are charging. Follow Manufacturer Instructions: Consult the battery manufacturer''''s guidelines and specifications for recommended charging voltages and currents. Observe Voltage Limits: Never exceed the battery''''s maximum charge voltage, which is typically specified in the manufacturer''''s documentation. Monitor Charging: Pay attention to the battery''''s temperature and voltage during charging to detect any signs of overheating or overcharging. Safe Charging Environment: Charge batteries in a well-ventilated area, away from flammable materials, and in a safe location. In Summary While a charger''''s voltage needs to be slightly higher than the battery''''s voltage to charge it, exceeding the battery''''s maximum charge voltage can lead to dangerous and potentially disastrous consequences. Always prioritize safety and follow the manufacturer''''s recommendations when charging batteries.
通常多数小电器用USB口的电压是5V，但现在很多快充USB adapter都能输出9V甚至20V，电脑的更是如此，否则用5V电压根本带不动电脑。不是说都是USB口就能用。楼主拿一个mac的20V的变压器插5V的电器，当然会冒烟，但愿mac变压器没烧坏。
同理，中美普通双孔插座都一样能互插，但电压不同不能轻易混用，一个道理。
USB C不是这么工作的 正常插上是5伏 然后充电器和设备会沟通确定需要的电压 所以混用按设计是没问题的
按你说的用USB C 可以给特斯拉充电了。LOL
我一般就看看电压110-240的，插头一样就混着用😓。。。。
这是中午阅读问题？lz可没抱怨苹果充电器不过关
说的不是手机
你阅读有问题吧，我说的是国内小电器有些充电不过关，国内小电器很多都是110-240电压的
来来， 你先看看Mac的说明。 不按充电说明， 电器起火， 不要太常见。 你所谓的“过流保护”也不是万能的。Mac用了不合格充电器一样着火。
楼主说的事故，和电器本身无关，和楼主知识水平相关。 楼主为啥不检讨自己的知识缺陷？
Mac 的重要安全性信息 【警告】不遵循这些安全性说明，可能会导致火灾、触电或其他伤害，还可能损坏 MacBook Air、线缆或其他财物。使用 MacBook Air 之前，请先阅读下面的所有安全性信息。
查了一下，USB C还真不一样
USB Power Delivery (PD): Many USB-C chargers use the USB Power Delivery protocol, which allows them to negotiate power levels with the connected device. This ensures that the charger provides the correct voltage and current for the device. Default USB-C Ratings: If a device doesn't have a PD-compatible chip, it will still charge at the default USB-C ratings (5 volts, up to 3 amps). No Damage: As long as the charger provides the required voltage and current, and the device is USB-C compatible, there's usually no risk of damage.
这个提醒很重要啊，经常看见有USB C口就以为充电器肯定可以通用了。
充电只看usb-c 线，不看适配器吗？
重新看帖
电流大小取决于用电器，充电头不能决定电流大小。你这估计八成是小电扇内部短路了，估计是电池短路，跟用哪个充电头充没关系。
大姐，人家楼主说的，很明显是USB-C 充电，和110/220没关系。
MacBook 不是USB c 口吗？ USB有什么电压问题
USB C voltage is negotiated between the charger and the device, with typical values being 5V, 9V, 15V, and 20V, and even higher with EPR (Extended Power Range). EPR can reach 48V. 小电风扇 does not have the chip that replies to the charger's inquiry what voltage to use, the charger will deliver default voltage for mac.