Prime members only. Amazon with Baseus Brand Store has the Baseus Picogo 5000mAh Ultra-Mini MagSafe Portable Charger on sale for $30 (Prime price) - $10 off with coupon code XS9VB45W at checkout = $20 with free shipping. Dimensions: 3.4" x 2.3" x 0.5" (weight 0.3lb)