Looks like a sub-brand of Jackery, but it's a cool one though. I'm using RavPower 14000mAh at the moment, it's not performing stronger than this Nectar but when budget is taken into consideration, it's a nice one.
Are you in the US? I've used this RavPower 14000mAh battery charger and it's great so far. It's compatible with many models but you gotta check it clearly with its product list here before you put it an order: Amazon.com: RAVPower Deluxe External Battery Charger 14000mAh Portable Power Bank Pack for iPhone 5S,5C,5 (Lightning Cable not included), 4S, 4, iPad Air, iPad 4, 3, 2, Mini 2, Mini, iPods; Samsung Galaxy S4, S3, S2, Note 3 Note 2; Nexus 7, Nexus 5,
I've got one. Works well. Also, if your iPhone allows it, drop your data speed from 4G/3G to Edge, etc. in the iPhone settings. This triples my battery life and I still have data. Also, when it's really cold, slap a foot warmer on the back of it.
