Can I charge 7.4 V battery with 5V
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 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.
What voltage should I charge a 7.4 V battery
In our case we have a 7.4V Lithium battery pack, which is nothing but two 18650 cells of 3.7V each is connected in series (3.7V + 3.7V = 7.4V). This battery pack should be charged when the voltage reaches down to 6.4V (3.2V per cell) and can be charged upto 8.4V (4.2V per cell).
Is it OK to use 5V charger to a 3.7 V battery
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.
How do you charge a 7.4 V battery
With just a mobile phone AC adapter (or power bank) and an Android data cable, you can safely and efficiently charge the 7.4V lithium battery up to 1A, which commonly used in various robots and motor drivers. The light-weight and micro USB interface features make it ideal for outdoor applications.
Can I charge a 7.4 V battery with a 6v charger
Not without a voltage booster circuit. 7.4v sounds like two 3.7v Lithium ion cells in series, and 3v per cell is more or less flat. You'd need 8.4v to fully charge them – plus charge management electronics to make it safe.
Can I charge a 7.4 V battery with a 6V charger
Not without a voltage booster circuit. 7.4v sounds like two 3.7v Lithium ion cells in series, and 3v per cell is more or less flat. You'd need 8.4v to fully charge them – plus charge management electronics to make it safe.
Can I charge a 3.7 V battery with a 4.5 V charger
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 charge 7.4 V battery with 12V charger
A 12V input into a 7.4V lipo/li-ion can make it catch fire. As stated above, you must use a charger that is specifically designed for Li-Ion usage. Your Li-Ion pack will charge to 4.2 volts per cell (same as lipoly) via CC/CV algorithm. Under no circumstances should your pack be charged above 8.4 volts.
Can I charge 7.4 V battery
With just a mobile phone AC adapter (or power bank) and an Android data cable, you can safely and efficiently charge the 7.4V lithium battery up to 1A, which commonly used in various robots and motor drivers. The light-weight and micro USB interface features make it ideal for outdoor applications.
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 4.2 V battery with 5V
Yes you can, but the concern is what happens when the voltage exceeds 4.2 volts. In the case of lread acid or NiMH types nothing except a slight outgassing or mild heating, in the case of a li ion ,it could result in a fire. . This type of battery cannot handle extremes and needs to be electronically protected.
Can I use a 7.5 V adapter for a 5V device
1 Answer. You should never use a significantly higher voltage rating adaptor on any kind of electrical device. If you do so you are risking damaging the equipment and anything else that you might have plugged into it.
Can I charge a 4.2 V battery with a 5V charger
Yes you can, but the concern is what happens when the voltage exceeds 4.2 volts. In the case of lread acid or NiMH types nothing except a slight outgassing or mild heating, in the case of a li ion ,it could result in a fire. . This type of battery cannot handle extremes and needs to be electronically protected.
Can I use 5V charger for 6V
No, a 5v adapter is never recommended to power a 6v device. Because we need a voltage higher than that of the battery before it will charge properly.
Can I use 5V charger to charge 12v battery
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 I use 5V 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 a 4.2 V charger charge a 3.7 V battery
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 0.5 A for 5V 1A
Yes, it is absolutely safe to charge a device with a charger that has more current capacity than needed. Since the voltage is held constant (5V), the only factor that determines current draw is the load (another term for resistance) the device places on the charger.
Can A 4.2 V charger charge A 3.7 V battery
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.
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.
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.
Can I use 5V charger instead of 12V
No, the charger needs to have an output a little higher than the battery you are trying to charge. If you use less, no charging will occur. Can I charge a 12V battery with a 5V charger Presuming that you are talking about a charger as an integrated product purchased off-the-shelf, you cannot.
Can I use a 7.5 V adapter for 5V
You should never use a significantly higher voltage rating adaptor on any kind of electrical device. If you do so you are risking damaging the equipment and anything else that you might have plugged into it.
