Romoss Direct via Amazon offers its Romoss Ultra-Slim 2,800mAh Extended Battery Charger Case for iPhone 6 Plus / 6s Plus
in Grey for $22.99. Coupon code "NBRM2UOK" cuts that to $18.39
. Plus, Prime members bag free shipping
. That's a buck under last month's mention and the lowest price we could find now by $9. This silicone case allows charging and syncing with your original Lighting cable and features an automatic shutoff.