The chip is about the size of a coin and does not need batteries or to be charged
The exterior pocket has a clip closure and plenty of flexibility for stuffing layers, river shoes, and other items you may want easy access to

Top load access to main compartment with underlid pocket Dual lower side compression straps Dual access fabric/mesh side pockets Large front panel fabric/mesh shove-it pocket Daisy chain for additional gear Lower zippered sleeping bag access with divider Removable sleeping pad straps Zippered hipbelt pockets for easy access to small items on the trail Integrated removable raincover Internal reservoir sleeve Adjustable ice tool or fishing rod Dual Upper side compression straps Full-length vertical side zipper access to main compartment Features: Dual lower side compression straps Dual access fabric/mesh side pockets Daisy chain for additional gear Lower zippered sleeping bag access with divider Removable sleeping pad straps Zippered hipbelt pockets for easy access to small items on the trail Integrated removable raincover Internal reservoir sleeve Adjustable ice tool or fishing rod Dual Upper side compression straps Full-length vertical side zipper access to main compartment Built to the same high standards and offering the same feature set as our adult packs, the Ace 75 is intended for the next generation of environmental stewards

My overall stand (without the added 24 top) measures: 20 high x 20 deep x 38 wide
They have a great section on their website that explains how to test the fit of their helmets and what to do if you encounter looseness or it fails some simple fitment tests like the Roll Off one for example
And on trips when I need to carry my laptop, I reach for my buttery black leather Hammitt Olivier Zip Tote, which is designed in a slouchy silhouette with gunmetal stud details and a top zipper closure