Thumb Score: +1
Bestbuy has the Apple – MagSafe Battery Pack – White on sale for $ 74.99. This has hardly been on sale since it came out. Compared to the Anker 5k magnetic battery, it has slightly less capacity (compare wh, not mah, as they charge at different voltages) but better apple ecosystem integration such as seeing battery level on your phone. Both products have pass through charging but the apple version can charge even when the lightning cable is plugged into your phone (instead of the battery).