If you run a lot of effects pedals, opening up hatches or unscrewing housings to replace 9 V batteries can be a bit of a chore, with many guitarists opting to build a pedalboard and juice up all of the stomps from one mains-supplied power pack instead. Even if you only have a couple of boxes at your feet, time spent battery swapping or cabling up is time that could be spent playing. The 9 V Backpack from Züe Engineering allows a musician to quickly add battery power to a stomp without having to open up the casing.
Originally developed for last year's On timer pedal, a pedalboard clock created to help musicians manage time while performing, the 9 V Backpack comes in two flavors. The appropriately-named Right Angle version includes a metal clip on the power plug for holding the 9 V brick battery in place. The Straight Backpack doesn't sport the clip. For both versions, the battery is wired up at the business end courtesy of a snap connector and the power plug is slotted into the stomp. And that appears to be about as difficult as it gets.
![The 9 V Backpack comes in two flavors, one with a metal clip for holding a battery and one without](https://assets.newatlas.com/dims4/default/af64c96/2147483647/strip/true/crop/875x591+0+0/resize/875x591!/quality/90/?url=http%3A%2F%2Fnewatlas-brightspot.s3.amazonaws.com%2Farchive%2F01_ePLAMZC.jpg)
A center negative polarity makes the 9 V Backpacks compatible with most stomps on the market, and the first 2 inches from the barrel plug have been triple insulated with rigid shielding.
A 3-pack 9 v Backpack is priced at US$24.99, and buyers can opt for three Right Angled adapters, or three Straight adapters, or a pack of two Right Angled plus one Straight.
Product page: 9 V Backpack