LTI Tools 4850 3 Piece 3 8" Drive Twist Socket Transmission Drain Plug Removal System (Includes Twist Sockets: 4510, 4621 & 4851) Conduit Bender or AGM batteries Also tests Manufacturer Part Number 846017S or AGM batteries Also tests discharged batteries and detects bad cells Applies a true 40 amp load during testing to simulate real world operating conditions and provide more accurate test results Tests 6V and 12V batteries rated between 4AH 50AH Stores the last 50 tests in memory The RC 300 enables the user to blue print known good batteries of different types sizes to drive improved testing accuracy The unit will store up to 40 different blue printed battery types The user can also set customized pass fail settings based on their preferred profile Test results include: battery's measured amp hour (AH) capacity engineered for professional electrical contractors who demand reliable performance and ease of use in the field 4621 & 4851) 3 Piece 3 8" Drive Twist Socket Transmission Drain Plug Removal System (Includes Twist Sockets: 4510