Approach 1 solar charger 7 watts grip cords for easy attachment to backpacks, tents, and more durable wear-proof finish for rugged outdoor use dual usb-a ports for simultaneous charging utility storage pocket usb rechargeable batteries designed to outperform alkaline batteries fast charging with a usb-c port on each battery easy to use included charging cable can charge 4 batteries at once each paleblue battery can prevent up to 1,000 single use batteries from being thrown away what's included 1 paleblue approach 1 solar charger 4 grip cords 4 paleblue aa batteries 1 4-to-1 charging cable grs certified post-consumer recycled plastic travel cases are included for all batteries.All paper packaging is curb recyclable.Technical specificationsapproach 1 solar charger dimensions: 20cm x 30cm x 2mm weight: 310g power input: solar exposure output voltage: 5 volts output current: max : 1.4A output wattage: 7w origin: designed in u.S.A assembled in china usb-c rechargeable batteries chemistry:lithium ion power w-h : aa: 2.25W-h voltage: aa: 1.5V capacity: aa: 1560mah charge time: aa: 90 minutes depending on charger specifications. Cycle rating: 1000 cycles charging cable: 1 usb to 4 micro usb charge state indicator: green led protection circuit: integrated safety circuit protects battery and device overheat protection: operating at max output the battery will not overheat, this is part of the protection circuit. Other safety protections: protects against overload, leakage, short ci...