Insignia Side Dock Battery Charger for Xbox Series X w/ 2x 1200mAh Battery Packs $12 + Free Shipping Best Buy has *Insignia Side Dock Battery Charger for Xbox Series X w/ 2x 1200mAh Rechargeable Battery Packs* (Black, NS-XXDOCK) on sale for *$11.99*. *Shipping is free* for My Best Buy Members (free…