1. Using (LiFepo4) Lithium Iron Phosphate Batteries in Aviation Engine Starting Batteries

2. Destructive Testing

3. Why is LiFePo4 safe ?

7. Impedance Values.. 19 mohms

8. 10.5mohms

9. Low Impedance.. 10.8 mohms

11. SLA discharge curve low C-rate

12. Lithium discharge curves, hi C rate

13. Energy Densities

14. Watthours / kg – Watthrs / Liter

15. Rogone plot - energy storage

16. Energy Release / chemistry type Exothermic volatilty

17. Lithium cells - LiFePO4

18. Lithium can safety valve

19. See-thru clear case design

20. BMS

21. Balancing circuit

22. Balancer circuit

23. Charge display

24. Low V alarm, LVC circuit

26. ADVANTAGES Much less weight Smaller size Flatter discharge curve Very low self discharge rate Very long cycle life Deep cycle ability No maintenance needed Cheaper than lead acid in the long run Environmentally friendly

27. Current users; Turbine

28. PT6-20 in Lancair IV

29. PT6 start - peak A draw, V drop

30. PT6 300A generator

31. Turbine Start Data, Lithium 18lbs

32. Charging Data > start

33. Piston; IO550, Lithium 4 lbs

35. REFERENCES Dynalab Wikipedia A123 MIT Battery university Goodenough UT Electropedia Aleees Phostech Ti Sandia Labs