What is the charging voltage for A 4.2 V battery
For the charger to be within specifications the charge voltage must be between 4.15 volt and 4.25 volt. Values below 4.15 volt will increase the lifetime of the battery and charge it to a lower capacity.
Can I charge A 3.7 V battery with 5V charger
Charging a 3.7v battery with a 5v charger. Here's everything about using a 5 V charger to charge a 3.7 V cell phone battery being safe to use: It's not safe to charge a 3.7 V cell phone battery with a 5 V charger for both the equipment and personal safety.
Can I charge A 12V battery with A 5V charger
No way it'll do 12V or any other chemistry. To charge any battery, you need to give it a voltage higher than what it's going to charge to.
Can A 5V charger charge A 7.4 V battery
No. USB is 5V; not high enough for charging a 7.4V lithium battery. That's a 2S battery which should be charged with a dedicated 2S balanced charger for safety. Such a charger will need a supply of at least 8.4V, typically 9V, able to handle the required charging current.
Can I charge 18650 to 4.2 V
18650 lithium-ion batteries are charged up to 4.2V and down to between 2V and 3V depending on the cell's specification for cut-off voltage. To be safe, never discharge lower than 3.0V unless you know your cell's specification.
Can I charge A 3.7 V battery with A 4.2 V charger
The charge cut-off voltage of a 3.7V battery is exactly 4.2 V. Therefore, it is possible to use a 4.2V charger as a 3.7V battery charger, but using a 5V charger to charge a 3.7V battery will cause the battery to overcharge.
Can I use 5V charger for 4.5 V device
There is no problem while using a 5v adapter to generate a 4.5v device. A device stating 4.5v actually can generally withstand a voltage appliance of a minimum of 5.5v. Hence there is no problem applying a 5v adapter to that specific device.
Can I charge a 3.6 V battery with a 5V charger
A 5v charger for a 3.6v device is very likely, maybe even guaranteed to damage your device in a serious way. You should use the charger that came with it or find an identical one.
What happens if I use a 5V adapter on a 12V device
That said, I'd suggest against using a 5 volt supply for a 12 volt device. For a start, if it really requires 2 volts (or close to it), you will have a problem because 12 x 2 = 24 watts, while 5 x 2 = 10 watts, so the power supply is under-specced to do the job at maximum load.
What happens if you put 12V on 5V
You cannot use a 12V power supply on a 5V. It will cause the device to draw more current than it is designed for and will likely burn out, causing fire hazards and explosions. In other words, if the applied voltage is more than the maximum rated voltage then the device will undoubtedly fail due to overvoltage.
Can I charge a 7.2 V battery with a 5V charger
No, it is not advisable. The 5V 2A device does not sound like a charger, it sounds like a power supply, so it should not be connected to batteries anyway to prevent damage and fire.
Can I charge 18650 with 5V
It can support up to 2.1A charging current under 5V input power, and 0- 3.5A output at 5V. The battery full charging voltage is 4.2V.
Can I charge a 3.7 V battery at 4.2 V
Generally, a 3.7v lithium battery needs a "protection board" for over-charging&discharging. The battery without a protection board can only be charged with 4.2V voltage, because the ideal full charge voltage of a lithium battery is 4.2v, once the voltage exceeds 4.2v, the battery may be damaged.
Can I use 5v charger for 4.5 V device
There is no problem while using a 5v adapter to generate a 4.5v device. A device stating 4.5v actually can generally withstand a voltage appliance of a minimum of 5.5v. Hence there is no problem applying a 5v adapter to that specific device.
Can I charging 3.6 V battery with 5V
A 5v charger for a 3.6v device is very likely, maybe even guaranteed to damage your device in a serious way. You should use the charger that came with it or find an identical one. Remember that along with the output voltage rating there is also maximum output amperage, so not every 3.6v charger will work.
Can I use a 5v adapter for 4.5 V
There is no problem while using a 5v adapter to generate a 4.5v device. A device stating 4.5v actually can generally withstand a voltage appliance of a minimum of 5.5v. Hence there is no problem applying a 5v adapter to that specific device.
What happens if you charge a 6V battery with a 5v charger
Secondly, a lower voltage charger will never be able to produce enough power to fully charge your 6V battery. It might charge your battery enough for you to get your device jump started, but that's about it.
Can I use a 5V adapter for 4.5 V
There is no problem while using a 5v adapter to generate a 4.5v device. A device stating 4.5v actually can generally withstand a voltage appliance of a minimum of 5.5v. Hence there is no problem applying a 5v adapter to that specific device.
Can I use a 5V adapter to power a 12V device
That said, I'd suggest against using a 5 volt supply for a 12 volt device. For a start, if it really requires 2 volts (or close to it), you will have a problem because 12 x 2 = 24 watts, while 5 x 2 = 10 watts, so the power supply is under-specced to do the job at maximum load.
Can I plug a 12V into a 5V
The device will very likely burn out. In addition, depending on what the device is and the capacity of the 12V supply, connecting a 12V supply to a device rated 5V max could lead to a hazard – fire, explosion, etc.
Can I use 5V to power 12V
To get 12V DC from 5V DC you need to use a power converter. In this case, a boost converter. But we all know the law of conservation of energy, the amount of power that goes into the converter must be equal to the amount of power that goes out. Typical boost converters on Amazon would given you an efficiency between .
What happens if you charge a 6V battery with a 5V charger
Secondly, a lower voltage charger will never be able to produce enough power to fully charge your 6V battery. It might charge your battery enough for you to get your device jump started, but that's about it.
Can I charge 5V with 5.2 V
Almost definitely yes. Nearly all battery cells operate at below 5 volts, which means your device's charger circuit is going to chop the 5V or 5.2V down to battery charge voltage (4.2V in modern devices). Your device won't even notice the difference.
Can I charging 3.6 V battery with 5v
A 5v charger for a 3.6v device is very likely, maybe even guaranteed to damage your device in a serious way. You should use the charger that came with it or find an identical one. Remember that along with the output voltage rating there is also maximum output amperage, so not every 3.6v charger will work.
Can I use a 5V charger for 4v
If by a normal charger, you mean a USB phone charger, then the answer is no. Most lead acid batteries, which are often car batteries, are 12 volts, while USB chargers are 5 volts. You should only use a battery charger specifically designed to charge 12 volt, lead acid batteries.
