1. Battery Technology in UAS Application Trevor Hahm

2. Current Binder Contents How batteries work - chemical reaction equations Specific Energy / Energy Density of various battery technologies Durability, flammability, life cycles Individual cell specifications Charging/Discharging voltage and current trends Power consumption & regeneration Conversion from convention aircraft to all electric aircraft

3. Quick Review: Electrical Power as Applied to Batteries

4. Review Continued - Charge and Discharge Rate

5. Battery Chemistry Technologies (Top 3) Cell TypeEnergy Density (Wh/L)Specific Energy (Wh/kg)Life Cycle (80%) Li – Poly362.75170.9300 Li – Ion4901701000 Li – S215.63260.041600 Best COTS Batteries: Li-Poly

6. Best COTS Li-Poly Batteries (Specific Energy) Thunderpower G8 Pro Lite + 25C 7800mAh 22.2v ($335.99) 169.27 Wh/kg 1.024kg = 2.255lb Provide 173.16 watts continuously for 1 hour Provide 44.4 watts continuously for 3.9 hours Provide 22.2 watts continuously for 7.8 hours http://www.thunderpowerrc.com/7800-mAh/TP7800-6SPP25

7. Future Additions / List of Shortfalls List of vendors/suppliers List of current COTS battery packs Specific Energy historical trends in Lithium technology Predictions for 2015