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edit approved Jul 23, 2018 at 0:38
Dorian
edit approved Jul 23, 2018 at 0:38
Dorian
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I've a defective charger for a small LED torch light, its output is 4.2V / 500mA.

I may not find an alternative one, so I'm considering modifying a mobile phone charger as following:

  • The mobile phone charger has output of 5V / 1 or 2 Amps.
  • I put at the output three diodes: 1N4007, and two schottky diodes of about 0.1V voltage drop each: 0.65 + 0.2 = 0.85 V
  • So the output becomes: 5-.85 = 54.15V (edited )

Is this voltage adequate and suitable to charge the battery? Is it safe to use? Let me know your thoughts.

Thanks in advance

I've a defective charger for a small LED torch light, its output is 4.2V / 500mA.

I may not find an alternative one, so I'm considering modifying a mobile phone charger as following:

  • The mobile phone charger has output of 5V / 1 or 2 Amps.
  • I put at the output three diodes: 1N4007, and two schottky diodes of about 0.1V voltage drop each: 0.65 + 0.2 = 0.85 V
  • So the output becomes: 5-.85 = 5.15V

Is this voltage adequate and suitable to charge the battery? Is it safe to use? Let me know your thoughts.

Thanks in advance

I've a defective charger for a small LED torch light, its output is 4.2V / 500mA.

I may not find an alternative one, so I'm considering modifying a mobile phone charger as following:

  • The mobile phone charger has output of 5V / 1 or 2 Amps.
  • I put at the output three diodes: 1N4007, and two schottky diodes of about 0.1V voltage drop each: 0.65 + 0.2 = 0.85 V
  • So the output becomes: 5-.85 = 4.15V (edited )

Is this voltage adequate and suitable to charge the battery? Is it safe to use? Let me know your thoughts.

Thanks in advance

Fixed broken formatting, which had made the text difficult to read.
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SamGibson ♦
SamGibson ♦
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I've a defective charger for a small LED torch light, it'sits output is 4.2V / 500mA I.

I may not find an alternative one, so I'm considering modifying a mobile phone charger as following:

  • The mobile phone charger has output of 5V / 1 or 2 Amps.
  • I put at the output three diodes: 1N4007, and two schottky diodes of about 0.1V voltage drop each: 0.65 + 0.2 = 0.85 V
  • So the output becomes: 5-.85 = 5.15V Is this voltage adequate and suitable to charge the battery? Is it safe to use? Let me know your thoughts.

Is this voltage adequate and suitable to charge the battery? Is it safe to use? Let me know your thoughts.

Thanks in advance

I've a defective charger for a small LED torch light, it's output is 4.2V / 500mA I may not find an alternative one, so I'm considering modifying a mobile phone charger as following:

  • The mobile phone charger has output of 5V / 1 or 2 Amps.
  • I put at the output three diodes: 1N4007, and two schottky diodes of about 0.1V voltage drop each: 0.65 + 0.2 = 0.85 V
  • So the output becomes: 5-.85 = 5.15V Is this voltage adequate and suitable to charge the battery? Is it safe to use? Let me know your thoughts.

Thanks in advance

I've a defective charger for a small LED torch light, its output is 4.2V / 500mA.

I may not find an alternative one, so I'm considering modifying a mobile phone charger as following:

  • The mobile phone charger has output of 5V / 1 or 2 Amps.
  • I put at the output three diodes: 1N4007, and two schottky diodes of about 0.1V voltage drop each: 0.65 + 0.2 = 0.85 V
  • So the output becomes: 5-.85 = 5.15V

Is this voltage adequate and suitable to charge the battery? Is it safe to use? Let me know your thoughts.

Thanks in advance

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Amjad Basheer
Amjad Basheer
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Charging Lithium ion battery with a modified charger

I've a defective charger for a small LED torch light, it's output is 4.2V / 500mA I may not find an alternative one, so I'm considering modifying a mobile phone charger as following:

  • The mobile phone charger has output of 5V / 1 or 2 Amps.
  • I put at the output three diodes: 1N4007, and two schottky diodes of about 0.1V voltage drop each: 0.65 + 0.2 = 0.85 V
  • So the output becomes: 5-.85 = 5.15V Is this voltage adequate and suitable to charge the battery? Is it safe to use? Let me know your thoughts.

Thanks in advance