1994 Johnson/Evinrude "ER" 2 thru 8 outboards Service Manual, Page 249Get this manual
Battery Specifications r::=J Batteries must be heavy-duty, marine construction and
either ventedrefillable, maintenance-free, or deep-cycle with CCA or MCA ratingFor best performance, OMC recommends you use 12-volt battery with minimum rating of 360 CCA (465 MCA) with 90 minutes of reserve capacity (50 ampere-hours)
fN=J Use bolts and nuts to secure battery cables to the batteryBattery Testing
DO NOT use wing nuts even if they were supplied with the batteryWing nuts will work loseLoose battery cables can cause damage to the electrical system
ill handled with care1Visual Inspection