Lassen - Battery life aa to car 12-6

[dmnamibia]

I am using the data logger on all field trips and require more than 10 hours logging from the battery. ( 5 days - 8 hours) I would like to activate the logger from the car battery when the car is running and create a new file. Could not find solution on sparkfun. Any suggestions?

Use it to update T4Africa.com

[kb0thn]

I use a cell phone car adapter. It provides 4.5 volts at 300mA. And it’s cheap.

[dmnamibia]

Works fine thanks