Advantages and disadvantages of internal and external power supplies for projectors

Whenever talking about the projector, we can not ignore the importance of the power system to the projector. The power supply of the projector not only provides the power required by the equipment but also ensures its normal operation. The power supply system of the projector is divided into two kinds, one is the built-in battery, and the other is the external power supply. Most people may not know the difference between these two, but here are some of their advantages and disadvantages so that you can understand them better and choose a suitable projector.

Built-in power supply projector

Advantages
Portability: The projector with a built-in power supply can be used independently and does not require an external power supply, so it is more suitable for moving and temporary use. Some projectors support power bank charging to extend outdoor use time, and they can charge your phone in reverse.
Simplicity: The built-in power supply reduces the use of external power cords and adapters, making the projector cleaner and easier to carry, which also could make your space more concise.
Flexibility: Projectors with built-in power supply can be placed in any positions with greater flexibility, regardless of the location of the power outlet. It could let you have a good experience in outdoor scenarios like backyard and camping.

Disadvantages
However, projectors with built-in power supply also have some disadvantages:
Service time: Projectors with a built-in power supply are usually powered by batteries, which have limited battery capacity and may not be able to meet the needs of long-term use. You may be in a worried mood for a long time when you use it.
Maintenance costs: Projectors with built-in power supply need to replace the battery if the battery is damaged or aging, and the maintenance cost is higher.
Image performance: according to numerous projector reviews, projectors with built-in batteries have insufficient brightness and resolution.
Projector life: normally, this kind of projector has a compact body, and it has a low heat dissipation, thus influencing the entire performance of the projector after long time use, which also could influence the projector life.

External power powered projectors

Advantages
Continuous power supply: The external power supply can provide a stable power supply, which is not limited by battery capacity and is suitable for long time use.
Low maintenance costs: External power supplies are generally more durable than batteries and have relatively low maintenance costs.
Stable performance: The external power supply can provide a more stable power supply, helping to maintain the stable performance of the projector. This is vital when you need to use it in a big event, it will never stop working when your leader gives an important presentation. 
Price: the same price in those two projectors, the external power supply projector would have a higher product’s specification than the internal power supply projector, and you could enjoy a better product experience.
Projector life: The external power supply has appropriate safety protection. Look for surge protection, over-voltage protection, over-current protection, overheat protection and other functions. The external power supply can extend the life of the projector by reducing internal wear.
Safe 8-figure tail power socket design and DC direct current：8-figure tail power socket can prevent the insertion of substandard wires, only the original or the same size of the original plug can be inserted. DC direct current can provide more stable energy to the projector, make the projector run more stable, and extend the service life.
Typc c interface: Recently more and more projectors have Typc c interface, which can not only be used for charging, but also support reverse charging. It can also be used for data transmission when the HDMI interface is used, and more devices are connected through this interface.

Disadvantages:
However, projectors powered by external power supply also have some disadvantages:
Poor portability: projectors requiring an external power supply need to consider the location of the power outlet when moving and for temporary use, which is not as flexible as projectors with a built-in power supply.
External cables: The external power supply requires a power cable connection, which may increase confusion and inconvenience.

When you know the differences between the internal and external power supplies for projectors, then it will help you to choose the most suitable projector according to your needs.