I am always delighted with this external battery that perfectly fulfilled its role. ~ 90% charge for my iPad 3 ~ 5 hours ~ 500% load for my iPhone 5S (100% charge in 1 hour 30 minutes), battery level indicator external, overvoltage protection, discharge, overload, short A small concentration of technology. This battery filled his role perfectly.
I dealt RAVPower for service (for a question on the LED), and the response was very quick and courteous, I'm already the proud owner of another RAVPower charger and I really recommend this brand for their product quality , durable and robust.
I have attached a short video for more info that allows you to have a complete overview.