The phone charger is marked with an output voltage and current What is the difference between 5V 500

5V, is the output voltage, the back is the charging current, the design of the battery is generally based on the standard design, that is, the optimal value of the charging current is the multiple of the capacity, so the size of the charging current determines the capacity of the most suitable charging battery, but in general, the difference in capacity is not too big, so it can be interchanged, but the current is large, the charging is faster, as you said the capacity is large, the internal resistance is small.

Obviously you have made a big mistake, in the process of charging, the internal resistance of the battery is to change, and, as the battery is saturated, the charging current back gradually decreases to 0

It is because the voltage of the charger is close to the battery voltage, and the internal resistance at this time is the smallest, you must know that the battery is a small electrolytic cell, not a pure resistance circuit, you purely use the resistance to analyze, it must be wrong.

That's problematic.

This is generally not recommended.

The charger can be used with a voltage current lower than the requirement.

But it's better not to use higher than required.

This is harmful to lithium batteries.

and overheating.

It will shorten the lifespan.

The safest thing is to use the original charger.

If not, look for the same output voltage and current.

5v and 300mA are available on the market.

There are usually two kinds, and the charging head can be seen to be 5V and by checking the charging head identification.

1. Generally speaking, there is a clear model identification on the charger. If the charger is unlikely to be counterfeit, in addition, the original charger is the best way to charge the phone, otherwise it will cause damage to the phone and serious battery **.

2. Generally, there are 1A, 2A, 3A, 500mA charging cables, the specific values are subject to the product parameters of the purchasing manufacturer, it is recommended to purchase and use the official genuine data cable.

Emergency chargers, mobile phone chargers.

The general user is mainly exposed to the first two. The most sold on the market is the travel charger, and the forms of travel chargers are also diverse, including the most common cheap duck egg-type micro travel charger, ordinary desktop pallet charger, and high-end desktop charger with LCD display.

In view of the fact that the vast majority of mobile phone users are non-professional users, the charger basically has the function of full self-stop, and most of the travel chargers are fast chargers, and the charging time is about 1-3 hours.

Many chargers on the market advertise themselves as using microcomputer control, including some very cheap duck egg-type micro travel chargers, in fact, strictly from the analysis of the charging circuit, a small part of the charger can be truly microcomputer controlled (single-chip microcomputer control).

Fast charging is 5V 2A, fast charging is 5V 3AFast Charging Mode: A charging system consisting of adapters, cables, and terminals, starting from the initial state of charge and ending with 30 minutes of charging, during which the average current entering the battery is greater than or equal to 3A or the total charging capacity is greater than or equal to 60% of the rated capacity of the battery.

Normal Charging Mode: The charging mode in which the rated output voltage of the adapter is 5V and the rated output current is less than or equal to 3A, in which the output ports of the adapter are short-circuited D+ and D-.

The differences between the mobile phone charger 5V500MA (and 5V1000MA (1A) are mainly as follows:

1. The charging current is different.

The current of 5V1A is twice that of the charger, and the quality requirements for the charger are a little higher.

2. The charging power is different.

The charging power of the 5V1A is 5W, without taking into account other factors, the latter is 2 times the charging power of the front. With the same battery capacity, the latter takes half the charging time to charge faster.

3. The size of the charger is different.

In general, chargers with higher charging power are relatively larger because the internal cables are thicker, and also for better heat dissipation.

4. The heat generation is different during the charging process.

5. Different requirements for charging data cables.

The 5V1A charger comes with a thicker charging cable and a shorter maximum length of support.

Glad you asked: 5V is the voltage, 5000 mAh is the current, that is, this charger is 5 watts. 1. The most common 5V power supply is the mobile phone charger, the mobile phone charger current is generally about (1 3)A, for example, the charger of 1A can only drive 5W electrical appliances, and 3A can drive 5V 3A = 15W electrical appliances.

2. The output current of the cellular power supply can reach about 5A, which can drive 25W electrical appliances. The maximum output current of the general 0 30V adjustable regulated power supply is about 10A, and the slightly larger ones can reach 20A, 30A, and 50A, and the power that can be driven is about 50W 250W. Some high-power power supplies on the market, the power can reach tens of kilowatts or even higher, if the output current of the high-power power supply can reach 1000A, according to the output of 5V, the output power is 5000W!

Therefore, to measure the load capacity of the power supply, it is meaningless to only mention the voltage without considering the current, and it is also a reason to only talk about the current without considering the voltage, I hope it will help you, and I wish you a happy life.

This is determined by the charging head, but the quality of the data cable affects the charging efficiency.

Under normal circumstances, the mobile phone charging head will have two parameters, one input and one output, the input bit mains power is 220V, and there are also 110-220V; The output is generally 5V, which is due to the fact that the mobile phone uses a lithium battery and the charging voltage is 5V.

In addition, there is an output parameter on the mobile phone, that is, the current, generally 1A or 2A, etc., this refers to the current output of the charging head when charging the mobile phone, which determines the length of the charging time, the larger this parameter, the shorter the charging time.

The quality of the data cable is the decision to lose, a good data line loss is very small, and the charging efficiency will be high. The poor data line loss is relatively large, for example, the output of the charging head has a voltage of 5V, and the voltage will be much lower when the data line is connected to the mobile phone.

Therefore, the current and voltage of the mobile phone charger are determined by the charging head.

It is 5V=2A high current.

1A = 1000MA, now the mobile phone can basically use both chargers, but 2A will charge faster.

The differences between these two chargers are as follows:

1. The output current of the charger is different, and the current size of two amps is twice that of one ampere.

2. Under the same conditions, the charging time of two amps is twice as fast as that of one amp.

3. The output power of the charger is different, two amps are 10 watts, and 1 amp is only 5 watts.

4. Under the same conditions, the heating of the charger charged one ampere is more prominent.

A mobile phone charger is a constant voltage power supply that changes the power by adjusting the current, and the power voltage and current, the unit is generally watts. i.e. p ui

Is the voltage, current and power of the charger determined whether the device can be matched with your mobile phone charging? In other words, can it be used on your phone? Voltage x current = power, this power represents whether the charger can't pull the cart?

Similarly, the voltage that is higher than the internal demand of the mobile phone will also damage the ...... of your mobile phone

1000mA is twice as large as 500mA charging current and twice as fast as charging time.

As for which charger to use, look at the charging part of your mobile phone manual, there should be instructions.

If you can't find the instructions, you can try 1000mA first, charge for about half an hour and touch the phone, a little hot is normal. If it's too hot, use a 500mA later.

The difference between fast and slow charging, if the mobile phone is not matched, using 5V1000MA may cause the mobile phone to heat up.

The magnitude of the current is not the same! Do you know this?

Depending on the charging head, the data line will affect the output current due to the resistance. It is recommended to choose an original data cable with a short cable.

It is basically a charging head, but the data line also has resistance, so the data line also has the conditions that ultimately determine the voltage and current, but it is very few.