The cables are 9.84ft (3m) , to be long enough to position the panel to catch the best sun and to connect to a device that is not very portable. HIGHER CONVERSION EFFICIENCY The monocrystalline silicon solar cells provide conversion efficiency of 23%, higher than other conventional panels SAFE CE CertificationISO CertificationOvercharging ProtectionOvercurrent ProtectionShort Circuit ProtectionOverload Protection AFFORDABLE & COMPLETE KIT A: 1*DOKIO 110W solar panelB: 1*DOKIO 10A controllerC: 1*9.8FT (3M) cable (SAE to XT60)D: 1*cable (XT60 to Alligator clip)E: 1*cable (JY60 to DC)F: 5*DC conversion adapters (8mm/6.4*4mm/5.5*2.5mm/5.5*2.1mm/3.5*1.35mm) FAQ: Q1: Can I connect panel to battery for charging directly without controller ? A1: most power station is possible to do this.Because most of them have built-in MPPT,but the battery,Without the voltage regulation provided by the controller your chance of cooking the battery by overcharging is possible. To charge a power station with a built-in controller, please do not connect the attached PWM controller. Q2: Why the solar can not produce 110W power when chargingto power station? A2: As you know the solar panels are affected by many factors such as the light intensity and the panel's angle put on the ground. 110W is tested in an ideal laboratory. However, the intensity of the light constantly changes. In addition, the angel of the light illuminating the solar panel also changes with the rotation of the sun.Please try test your solar panel under the full sunlight to see, and make sure there is no shadow cast on the panel. Q3: Are this units waterproof?Can these solar panels be permanently instaled outside? A3: Yes,lt is waterproof , BUT meant for temporary or emergency use only. Not designed for permanent installation or prolong weather exposure,DON'T leave them out at night or in bad weather. Using without batteries is primarily providing power to the USB ports(PWM controller). If you want higher power generation efficiency, you can buy MPPT and use it.Charge controllers reduce the wattages and amperage output as the batteries approach getting fullIn an ideal laboratory，110 Watts at 18 Volts(The panel rated voltage) yields 6 Amps, where I=P/V. DOKIO Solar Panel Mounting Bracket Quick Angle Adjustment Metal Hardware Suit... DOKIO 19.7 ft (6m) XT60 Extension Cable for Flex Solar Panel Extension Setup ... DOKIO Foldable Solar Panel 100w(50x2) 18v Monocrystalline, Portable Folding S... DOKIO 100w 18v Solar Panel German TÜV Certification Monocrystalline(HIGH Effi... DOKIO Portable Solar Panel 300 Watts 12 Volt Foldable Monocrystalline with In... Add to Cart Add to Cart Add to Cart Add to Cart Buying Options Customer Reviews 3.9 out of 5 stars 143 4.7 out of 5 stars 29 4.3 out of 5 stars 560 4.5 out of 5 stars 372 3.9 out of 5 stars 357 Price $29.87$29.87 $24.87$24.87 $119.87$119.87 $79.87$79.87 — no data Maximum Power A pair of stands Cable 100w 100w 300w Dimension: 16.5*11.2*2.75in（ 42*28.5*7cm） 236.22in（600cm） 25*17.7*1.97in (63.5*45*5cm) 38.2*22.2*0.98in（97*56.5*2.5cm） 19.3*37.4*1.1in (49*95*2.8cm) Weight: 1.98lb(0.9kg) 0.79lb(0.36kg) 15.21lb(6.9kg) 11.7lb(5.3kg) 15.21lb(6.9kg) Cable length 9.8ft (3m): / / ✓ ✓ ✓ Cell Type: / / Monocrystalline Monocrystalline Monocrystalline DC 18V Output: / / Alligator clip ✓ ✓ USB Port: / / 2x MC4 2x Controller 14.4V Output: / / ✓ / ✓ Power Current: / / 5.56Ah 5.56Ah 12.22Ah