I believe the M3800, recommended by "Phred" has been discontinued by Metex however you can still find it at Abra Electronics for $49.99. It will measure up to 20 AMPS DC and gives digital readouts to two decimals.
Can't ask for much more than that....
04 Allegro 30DA, WH 8.1, Banks, 03 Honda CRV/2012 Jeep Liberty Jet, Brake Buddy Adv Select, 300watts Solar, 7 Group 31 Optima AGMs, 2000watt PSW inverter
"Philippians 4:11-13 KJV"