Review on 🔋 Power Boost and Freedom with Marpac 90067 Battery Pack by Saul Franco

We ordered one of these for next day delivery as our 110-220 volt power pack (from Radio Shack - double the voltage and lighter than original supplied by Marsona) suddenly died and we didn't want to pay $31 for a new one (Marpac only charges $14.95 for an international adapter). enough to hold SIX AA batteries in a two x three crosswise configuration Small Phillips screwdriver needed to pry open back to change batteries Proper "tip" permanently attached to short wire Weight with batteries is 7 ounces; The household power adapter that came with our Marpac unit (don't know what they ship now) weighs nearly 9 ounces, and the dual voltage weighs over 10 ounces. With a new set of premium batteries, the battery lasted 9 nights and started to lose power. and happens to pulse somewhere around the 10th (a number between 75 and 80 full hours at almost full volume). Summary: If you have a Marsona sound machine, only use it for a week or so when traveling (and hopefully buy batteries in bulk), it's a very useful addition. We highly recommend it.