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Kits that ship with battery covers for both controller generations, so one box fits an Xbox One pad and a Series X|S pad.
An Xbox One controller and a Series X|S controller take the same pack, but their battery doors differ. These kits put both kinds of cover in the box, two of each, so a house with one old pad and one new pad needs one purchase.
Start with the Play and Charge Kit if you want to keep playing while a pack charges inside the controller. The A100 station adds a stand that charges two controllers upright, and the A100 spare set adds two more packs and covers to that station.
All 3, from the A100 Charging Station to the A100 Spare Battery Set, sit in the DINOSTRIKE catalog, and each product page lists its box.
Each kit here includes four covers: two shaped for Xbox One controllers and two for Series X|S. Use the pair that matches your pad.