| Electronics > Beginners |
| Can I charge my laptop with DC-DC boost converter |
| << < (3/4) > >> |
| JohnnyMalaria:
There's a high possibility it won't work depending on your brand of laptop. Some use a sense wire to confirm that the power supply is a brand one (there's a EEPROM or similar in the supply itself). If it isn't the right one then either the laptop will simply refuse to charge or deliberately cripple the charging rate. Usually, the laptop will display a message. |
| Audioguru:
The boost converter is extremely cheeeap(!) and it is Chinese. Then is it reliable? Is it worth saving a few bucks to blow up your expensive laptop? |
| JohnnyMalaria:
How about a portable 12VDC to AC converter and plug the laptop's power supply into that? |
| ejeffrey:
Many laptops use an EEPROM on the charger that is needed for correct operation. In addition to implementing "lock in" on their chargers, it communicates the current rating to the laptop. So the laptop may start by drawing a relatively small current, then after identification increase the charge rate. If you don't have the proper ID, the laptop may charge slowly or not at all. Here is a hackaday article about spoofing this for a dell charger. They use the 1-wire protocol: https://hackaday.com/2014/03/03/hacking-dell-laptop-charger-identification/ |
| Dukov Ahzrukhal:
I use a similar converter to power my laptop all the time. It works fine but the converter does get very hot. |
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