A:AnswerThere is a 5 Volt setting, and is can handle up to 1.2 amps so with that info, as long as your batteries have the correct size plug, it will work. This is for round pin adapters.
A:AnswerThis adapter works with most round-pin connectors. A device is compatible if the 1) correct tip is available, 2) voltage is between 3 and 12 V DC, 3) input does not require more than 1.3 A of current, and 4) polarity is positive.
A:AnswerIwould say no as most laptops I have ever seen require more than what this power adapter offers in wattage. They do however carry a universal laptop power supply similar to this but made specifically for the higher wattage needed for laptops.