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Activating Old Samsung SGH-C450 Phone Without Battery Using USB or Power Supply

lukasz145 46716 9
Best answers LABEL_AI_GENERATED

Can I turn on a Samsung SGH-C450 without its battery by powering the battery contacts from USB or an external supply?

Yes — the phone can be powered from the battery contacts with an external supply, but the voltage should be around 3.8–4 V rather than a direct 5 V USB source [#10530072][#10530919] Connect plus to plus and minus to minus, and use a stabilized supply rated at least 1 A [#10529953][#10530919] If the phone still does not turn on, one reply says to add detection by putting a resistor between minus and the detection contact [#10530072] Another reply suggests adding a large electrolytic capacitor on the supply line [#10529953]
AI summary based on the discussion. May contain errors.
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  • #1 10529502
    lukasz145
    Level 9  
    Posts: 9
    Rate: 4
    Hello
    I would like to turn on my old Samsung SGH-C450 phone without battery.
    Is it possible to turn on this phone without a battery, for example by connecting a power supply or even USB to the contacts, because I saw in the video that you can connect it to USB and the phone will turn on.
    I'm waiting for your answer, thank you in advance,
    Greetings.
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  • #2 10529921
    tele_sim
    Level 33  
    Posts: 2608
    Help: 201
    Rate: 217
    This is how you turn it on under the power supply.
  • #3 10529934
    paweo123
    Level 1  
    Posts: 1
    Rate: 2
    tele_sim, Sometimes it's impossible!
    Try using USB or insert the charger cables into the battery slot.
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  • #4 10529953
    hacker17
    Level 17  
    Posts: 304
    Help: 6
    Rate: 49
    I think that 5V from USB is a good idea because it shouldn't damage the phone, try connecting + to + and - to -, it would be good if you added a large electrolytic capacitor and remember that the capacitor has a minus mark on it and connect + to + and well - to -
  • #5 10530072
    .:aspire:.
    Level 23  
    Posts: 609
    Help: 53
    Rate: 62
    What's the problem here? 5V is a bit too much, but the phone will turn on. It should be around 4V.
    Plus to plus. Minus to minus and detection. If the phone does not turn on, there is a resistor between minus and detection and that's it.
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  • #6 10530919
    kkknc
    Level 43  
    Posts: 23770
    Help: 1916
    Rate: 6712
    Connect a 3.8V-4V stabilized power supply with a capacity of at least 1A to the battery contacts, maintaining the polarity.
  • #7 10530965
    lukasz145
    Level 9  
    Posts: 9
    Rate: 4
    Well, I know that you have to connect the cables to + and -, but these contacts don't write +\- anywhere, so I'm not sure which is + and which is - and if it was connected incorrectly, nothing would have burned in the fireplace?
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  • #8 10531772
    .:aspire:.
    Level 23  
    Posts: 609
    Help: 53
    Rate: 62
    Can't you check where the MINUS is? Minus to ground and check the resistances.
  • #9 10532118
    Anonymous
    Anonymous  
  • #10 10532662
    lukasz145
    Level 9  
    Posts: 9
    Rate: 4
    Ok, thanks, I'll know now.
    topic to be closed.
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Topic summary

LABEL_AI_GENERATED
The discussion revolves around the possibility of powering an old Samsung SGH-C450 phone without a battery by using a USB connection or an external power supply. Several users suggest connecting a 3.8V-4V stabilized power supply directly to the battery contacts, ensuring correct polarity. It is noted that while 5V from USB may work, it is slightly higher than the recommended voltage. Users emphasize the importance of identifying the positive and negative contacts, suggesting methods to determine polarity, such as checking resistances. A capacitor may also be used to stabilize the connection. The conversation concludes with the original poster expressing gratitude for the guidance received.
AI summary based on the discussion. May contain errors.
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