Also, many aircraft give you access to ship's power, and the appropriate adapters are readily available.Never really worry about batteries dying in the iPad since the 430 does a good job of showing the flight plan (on a tiny tiny screen, but it works). Even if that died, I am confident I could get to where I'm going or get home pulling out the sectional I still carry. Lots of good landmarks around and I can hold a heading (and I fly with flight following so vectors are always an option as a last resort).