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Charger selection

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GΛMΣ-ӨVΣЯ Posted messages 67 Status Membre -  
GΛMΣ-ӨVΣЯ Posted messages 67 Status Membre -

Good evening,

I recently bought a phone, the Samsung A13 (which has a fast charging power of 15W).
The problem is, the charger is not included. And in stores, it’s impossible to find a charger with this power. A salesperson told me to get a 20W charger, but I read that exceeding the maximum charge of the phone could damage the battery.

In reality, I hear all kinds of things:
- A charger over 15W is compatible
- A charger over 15W risks damaging the battery
So, who should I believe?

Logically, for me, you shouldn’t exceed 15W, but in the end, I'm not so sure... Then I know that you have to apply the formula V x A = W to know the maximum delivered power.

My questions are therefore:
1) How to choose a charger that corresponds to the smartphone you acquire? What are the criteria to consider?
2) Is there a difference if charging with Micro USB to USB-C rather than USB-C to USB-C?
3) Maybe there are chargers that adjust to the phone's voltage?

I'm a bit lost. If someone can explain to me more clearly how this works, I thank them! I would like to know a bit more, it’s a topic that interests me, especially since chargers are becoming less and less included with the purchase of the phone.

Have a good evening everyone!

2 réponses

Réponse 1 / 2
Pierr10 Posted messages 13777 Registration date   Status Modérateur Last intervention   5 811
 

Good evening,

We will keep repeating it: 
It is not the charger that imposes the consumed power. It is the device we have plugged in (the smartphone) that takes the power it needs.

In other words, if the smartphone needs 15 W, the charger must be able to provide 15 W. If it is rated for 50 W, it is perfectly fine. If it is rated for 10 W, it will never be able to provide the expected power and is therefore not suitable.

Here is what is stated on Samsung chargers designed for tablets or smartphones that can ensure fast charging:

(The quality of the image is not great! Sorry!)

To answer the questions raised:

  • Practically all chargers are suitable. It is better to take those that are compatible with fast charging.
  • I recommend using the charger from the brand (Samsung). I saw a charger from a different brand that could not perform fast charging.
  • There is no need to question the voltage or compatibility. All phones have the same characteristics.
  • Regarding the cable: use a cable with a normal USB type A connector on one end and a USB type C connector on the other. The type A connector is plugged into the charger and the type C connector is plugged into the smartphone.

What is well conceived can be clearly stated,
And the words to say it come easily.
(Boileau)
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GΛMΣ-ӨVΣЯ Posted messages 67 Status Membre 50
 

Good evening,
Thank you for your response.

  • There are "fast charge" chargers, but I've also seen "ultra-fast charge" chargers. Either one should not pose any problems if I understood correctly? But in that case, in what situations could the chosen charger damage the battery?
  • As for the cable, it is included in the box, but both ends of the connectors are type-C. Can I still buy a type-C charger without a cable, or does it have to be type-A on the charger?
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Pierr10 Posted messages 13777 Registration date   Status Modérateur Last intervention   5 811 > GΛMΣ-ӨVΣЯ Posted messages 67 Status Membre
 

1) An ultra-fast charge involves significantly increasing the voltage so that the delivered power is higher. The smartphone must be designed to accept this increase in voltage (there are regulations).
Thicker cables will be required and the smartphone will heat up.

This is not really recommended and smartphone manufacturers do not always offer this option. It is certainly not possible on the Galaxy A13.

See this article.

2) I know that Samsung currently ships its smartphones with a USB C to USB C cable. This is not really wise because the use of such a cable is not widespread (connection to a computer?)

I don't know if there are chargers with a USB C output. I've never seen one.

In general, it is this.

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GΛMΣ-ӨVΣЯ Posted messages 67 Status Membre 50 > Pierr10 Posted messages 13777 Registration date   Status Modérateur Last intervention  
 
  • From what I can see, even if a phone supports "Ultra Fast Charging," it's probably better not to use it and to rather opt for "fast charging" to avoid excessive battery heat and thus preserve it? Because even if the smartphone is designed to handle it, there is still a risk?
  • As for the cable, I know that USB-C chargers exist. The connection with the computer is not possible. For my current phone, I was using a type-A to type-C cable to transfer my photos from the phone to the PC. With the type-C to type-C cable, it's impossible. I don't have that type of connector on the PC. And apparently, as far as I know, type-A to type-C will gradually be replaced by type-C to type-C in the future.
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Réponse 2 / 2
bazfile Posted messages 58430 Registration date   Status Modérateur Last intervention   20 245
 

Hello.

The 15 w Samsung chargers do exist, proof https://www.amazon.fr/Samsung-Chargeur-Rapide-Secteur-Type/dp/B06Y3MW7D4

bazfile
Moderator/Security Contributor.
a hello, a reply, a thank you are always appreciated.
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GΛMΣ-ӨVΣЯ Posted messages 67 Status Membre 50
 

Good evening,
Yep, I know they exist, that’s not the question, but I mainly wanted to understand how to choose one based on the phone. Because with every new phone, we will face this problem.
Basically, the question would be: How do we know which suitable charger to buy without making a mistake, regardless of the chosen phone? As long as it does not exceed the phone's maximum power, is there no issue? Or should other criteria be taken into account?
On the other hand, for the phone I have, I already have a USB-C cable; I just need the charger (which should also be USB-C, so I don’t have to buy an extra cable that would just sit unused in the drawer). The one you suggested is Micro-USB.
Thank you for your reply!

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bazfile Posted messages 58430 Registration date   Status Modérateur Last intervention   20 245 > GΛMΣ-ӨVΣЯ Posted messages 67 Status Membre
 

The one you are suggesting to me is Micro-USB

False, it is USB-C;

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GΛMΣ-ӨVΣЯ Posted messages 67 Status Membre 50 > bazfile Posted messages 58430 Registration date   Status Modérateur Last intervention  
 

Yes, but the cable has one USB-C side and the other Micro USB on the one you offer. I have a cable with two USB-C sides.
The charger (as seen in the images on the left) has a micro-USB connection.

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bazfile Posted messages 58430 Registration date   Status Modérateur Last intervention   20 245 > GΛMΣ-ӨVΣЯ Posted messages 67 Status Membre
 

No, it's USB-C; what matters is the written description.

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bazfile Posted messages 58430 Registration date   Status Modérateur Last intervention   20 245 > GΛMΣ-ӨVΣЯ Posted messages 67 Status Membre
 

Why in the images sent by customers, do they have a USB Type-A for their charger?

The reviews are about several chargers on Amazon and they are often mixed up; this charger has a USB to USB-C cable for charging: you connect the USB-C to the smartphone and the USB side to the charger. As I've already told you, it's the description that matters; it seems to me that it's written large enough:

You're asking yourself too many useless questions; you have the solution now, it's up to you to decide.

Good luck.

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