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You need a 90W+ (ideally 120W) laptop power supply that can be set between 15-17.5v.
Anything above might damage the charger.
Any lower-power rating will cause the charger to stop/bug when the charge starts.
You can also hook it to a modified ATX power supply (standard Computer PSU since 1998).
To do so, you need to wire your charger on the BLACK and YELLOW wires, and jump (with a paper clip or twist if you don't mind cutting the wires) the GREEN and BLACK wires from the 20/24pins connector.
For long term operation, it is best to add a 10W 10ohm ceramic resistor bolted to the metal case and wired between the RED and BLACK wires. This will help with keeping a more stable 12V supply (because of the way the ATX PSU work). Careful as the resistor might become hot.
A cheap/old 350W is plenty enough for 10+ Amps.
What are the exact specs of your laptop adapter? For example, if it states 18v 3.4A, as long as you keep the charge rate under 3A it should work.
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Originally Posted by Drake
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Last edited by Kos-Mos; July 3rd, 2013 at 15:31..
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