Found a few battery cases so far:
Mophie
Capacity: 3,300mAh
Details/Purchase (Black/Gold): http://www.mophie.com/shop/samsung-devices/juice-pack-galaxy-s6-edge
ZeroLemon
Capacity: 3,500mAh
Details: http://zerolemon.com/product/zerolemon-samsung-galaxy-s6-edge-2800mah-slim-power-battery-case-black/
Purchase: http://www.amazon.com/dp/B00WF9F9IM/
Mellg
Capacity: 4,200mAh
Details/Purchase (Black): http://www.amazon.com/dp/B00W1O9H9S/
Details/Purchase (White): http://www.amazon.com/dp/B00W1O9H66/
Comsoon
Capacity: 3,500mAh
Details/Purchase (Black): http://www.amazon.com/dp/B00VFE6KL8/
Details/Purchase (White): http://www.amazon.com/dp/B00VFE6KWC/
Mophie
Capacity: 3,300mAh
Details/Purchase (Black/Gold): http://www.mophie.com/shop/samsung-devices/juice-pack-galaxy-s6-edge
ZeroLemon
Capacity: 3,500mAh
Details: http://zerolemon.com/product/zerolemon-samsung-galaxy-s6-edge-2800mah-slim-power-battery-case-black/
Purchase: http://www.amazon.com/dp/B00WF9F9IM/
Mellg
Capacity: 4,200mAh
Details/Purchase (Black): http://www.amazon.com/dp/B00W1O9H9S/
Details/Purchase (White): http://www.amazon.com/dp/B00W1O9H66/
Comsoon
Capacity: 3,500mAh
Details/Purchase (Black): http://www.amazon.com/dp/B00VFE6KL8/
Details/Purchase (White): http://www.amazon.com/dp/B00VFE6KWC/
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