The Nokia 6120c battery cannot be charged with a mobile phone after being overcharged with a univers

Your phone is a BL-5B battery.

First of all, the BL-5B battery is a Lynx (injection molded) model, and the PCM (Protection Circuit) contact terminal is flat, not bifurcated like the Tabby (PCM case fixed with screws or soldering is plastic) model, and it is useless to use a needle.

1。The easiest way may be that your battery is shortened when it leaves the factory, causing the battery to be loose on the phone, and the vibration will cause the battery to have poor contact with the phone, and the phone will automatically shut down.

2。The output voltage and current of the universal charger may be different from that of the Nokia chargerNokia genuine mobile phone batteries have protective circuits.

Excessive voltage or current will make the FET (cut-off protection device) in the protection circuit (PCM) open or semi-open, increasing the resistance of the battery, so that the output voltage of your mobile phone battery will definitely have problems.

Solution: Discharge the battery completely and then charge it with a Nokia charger.

If it can't be turned on, it means that you have burned out the IC (integrated protection control element) or R4 resistor (mobile phone recognition resistor) in the PCM with the universal punch.

I'm also using 6120c

I have also encountered this situation of the landlord.

Replace it with a fully charged battery.

Turn on the phone does not detect the remaining power, it is still the memory power before the shutdown, so it continues to report the low, maybe the small six is to detect the remaining power of the battery every once in a while, and after re-testing, the actual power will be displayed.

The above is an even speculation, and it has not been tested in practice, and it is not necessarily Ha.

In addition, it's really not good to use a straight rush, especially our little six, the back cover is easy to loosen, try to open the back cover as little as possible.

Because the universal charger is simple to build. There is no voltage regulation protection circuit designed. So the current is unstable when charging.

It is easy to damage the medium of the battery. So basically sure your battery is broken, my 6220 is the same consequence, and I never used the universal charger to charge my original battery again! Change the battery, **The original battery above is probably in between, of course, your situation is more suitable for domestic copycat batteries!

It's been a long time... The solution is to use up the battery at one point! It is to use the automatic shutdown, and then use the original fast-charging charger to charge when the power is exhausted·· It's just enough to be full·· Multi-purpose universal charging is not very good·· It is recommended that the landlord do not use it more

Because the battery is a horn battery, it is good to move the corners of the battery inward with a needle, and the contact ports are separated

You're so stupid and cute...I had the same experience, I studied it for a long time, and the conclusion came out: poor contact.

It is the universal charge that presses the positive and negative electrodes into it. You use a needle to pull it out, and that's where you use the universal charging battery, you know?

I had the same experience, let's change the battery, I didn't solve the problem anyway. The battery is also not expensive. Hehe.

No way! Nokia is weird, you are not the only one who charges the battery of the universal flushing appliance!

It's good to run out of electricity......Then use a straight punch.

It's not so squeamish, it's washed out in one go.

The phone system is malfunctioning, so there is a problem with the battery level display.

1. First of all, the mobile phone system is faulty, which causes problems with the battery level display. This kind of problem is the easiest to solve, you can directly shut down and restart, which is equivalent to data refresh, and the general power display will return to normal.

2. Secondly, the charger is faulty. This malfunction is the main reason why the phone cannot be charged. So how to judge the quality of the charger.

It's actually very simple, try it with another charger. If it can be charged, then it can be concluded that the charger is faulty.

3. Third, the charger and the mobile phone are in poor contact. This is also a common situation where the charger is not plugged in properly due to carelessness on the part of the phone user. The solution is simple, it is to switch sockets back and forth.

4. Fourth, there is a problem with the mobile phone battery. Generally speaking, it is rare to have problems with your phone's battery. But once there is a problem, it is a big problem and must be taken seriously.

Therefore, when it is found that the charger and mobile phone system are not faulty, you should focus on checking the battery. If you find that the battery is swollen, then it means that there is a problem with the battery and you must stop using it immediately.

5. Fifth, there are quality problems with the mobile phone itself. If you buy a copycat phone, then there is a high probability that the mobile phone will malfunction. If it is a brand machine, it needs to be returned to the original factory for processing.

I'm in exactly the same situation as you, and after I went to a number of specialty shops and repair shops with my own charger, I came to this conclusion. Your charger interface end and mobile phone jack wear and tear more poor contact, it is recommended to change to a new direct charge, you can buy a domestic brand such as Scud, and less while charging, so the socket dangling around is easy to loosen the hole and needle, Nokia small port charging common problem.

1.Take the battery down and find a universal charger to try to see if you can charge it, if it doesn't work, the battery is broken.

2.If you can charge it, try to change it to a travel charge, if it can be charged, it means that your charger is broken 3If you change the travel charge or can't be charged, then you go to repair it, it is estimated that there is a problem with the board, as far as the phenomenon you described, most of the charging circuit on the board is a problem.

It is recommended to replace the charging cable. In most cases, the charging cable must be eliminated first, because there is a high chance of causing this situation.

Nokia Corporation is a multinational company headquartered in Espoo, Finland, mainly engaged in the production of mobile communication products. Founded in 1865 as a paper-making business, Nokia gradually expanded into rubber shoes, tires, cables, and finally developed into a mobile phone manufacturer.