By: Katherine Guzman, Manuel Uceta, Mohamed Mosaed

WHAT ARE YOUR PHONE PERCENTAGE AT THIS MOMENT?

How are phones taking over our life's? Today nearly two-thirds (64%) of U.S. adults own smartphones, which is twice as much since 2011. The unlimited access to text messages, emails, photos, video as well as access the Internet (For news), play games, listen to music, use GPS (Global Positioning Systems), and more. There is such a high demand Processor becoming much faster + ultra-high-res screens and app multitasking + thinness = limited amount of room for battery 

HAVE YOU EVER EXPERIENCED YOUR PHONE GETTING REALLY HOT WHILE CHARGING IT OR WHEN USING IT? (THIS IS DUE TO BATTERY)

Lithium ion batteries Very popular in smart phones because of its high power yield and safety. New York Times states, “…  When a battery is charged and recharged, it generates heat. If that heat is not controlled properly, it can cause the compounds inside the battery to burst into flames or even explode.”

Samsung’s Recall Late this year Samsung recalled over 2.5 billion galaxy note 7 smartphones due to battery defects. 92 reports of Note 7 batteries overheating in the United States, with 26 reports of burns and 55 reports of property damage Samsung's engineers working to find the cause of these explosions ultimately believed that it was due to one of the company's supplier.

HOW MANY OF YOU HAVE CHARGED YOUR PHONES OVER NIGHT? Reports show that explosions happened due to overnight phone charging, specifically when the phone is fully charged and starting to overheat in an outlet.

PRODUCTS TODAY Portable batteries: (Ryan Kath states, “… they continue to take a charge even when they are 100% full. “You have overheating, and fire, and explosion eventually. ” Build in battery packs (Solar or regular) Are just like portable batteries, there is nothing that could stop it over charging a phone, even after a device is fully charged.

SUN CELL *We are using existing technology that is being used in other battery packs. *It will be able to store 2x the amount of a regular phone battery. However, it will not charge the phone's battery automatically like other devices. *There will be a switch on the case that will allow the consumer to choose when to start charging their phone but will automatically stop when the device is full to prevent overcharging. *It will be able to charge with any sort of light.

CASE DESIGN We tried to create something new and innovative for a problem most people go through everyday. Furthermore, these solar panel cases are not that efficient when it comes to collecting solar energy since it takes too much time for these case to charge a phone, almost up to 10 hours. We aim to create a solar panel case that is both portable and efficient. Sun Cell will come as a wallet case, which will have the solar panels in the front and a slim lithium-ion battery in the back.

Materials: Solar Panel 6.0W: 19 % high efficient Monocrystalline (single cell) waterproof solar panel cell with a durable aluminum/plastic frame. (8.3in x 4.4in x 0.2in.) Lithium Ion Battery 2200mAh: Slim, lightweight ion batteries with over voltage protection. SparkFun Sunny Buddy (MPPT Solar Charger): Solar charger for single cell solar batteries recharges batteries with solar energy by just plugging the battery on one end and the solar cells on the other end. SparkFun LiPo Fuel Gauge: Allows user to know how much battery is left by flashing a light, when the plugged battery drops below a certain percentage.

Final Product Specifications: · Input/Output: DC 6V @ 1A · Size: 17 Final Product Specifications: · Input/Output: DC 6V @ 1A · Size: 17.5MM X 78.5MM X 160MM · Size of panels: 210mm x 113mm x · Efficiency of Panels: 19.00% · Capacity of Battery: 2200Mah · Compatible with IPhone 7 plus, IPhone 6s · Price: 150$

WHATS NEXT? The sun cell case will be priced at $150 per case plus shipping. The total cost of 100 cases turned out to be approximately $8,600. We won’t start making the cases until our goal of 80 Sun cells are sold through the funding page (Indiegogo) We will also present our project to the Zahn Center at CCNY in order to recruit students that are willing to help in building our product, which will ultimately keep our budget low.

Conclusion It is only 19 % efficient Lower the price