Sam D. Thomas wrote:

The AirMap 2000C has a 5" screen and offers most of the same features
the others do but is $500.00 cheaper. Like the EKP-IV, it operates off
the 12V, in-cockpit adapter and has emergency batteries for backup.

We've owned 2 1000's and the next one will be a 2000c. They work off of
14/28v as it has an internal regulator... Y

ou can find the Lowrance's even cheaper if you shop around a bit...