1990 Johnson Evinrude "ES" Cross V 88 thru 115, 150 thru 175, P/N 507874, Page 274Get this manual
Battery Specifications
INoteJ All batteries
should be of heavy duty, marine constructionMaintenance-free (sealed type) batteries are recommended for use on charging systems equipped with rectifier jregulator assemblies88 MSL models must use vented, refillable batteries
V4 Models For best performance, OMC recommends 12-volt battery with minimum rating of 360 amps cold cranking at (- 18 C) and 115 minutes reserve capacity rating at 80 (2r C)V6 Models For best performance, OMC recommends 12-volt battery with minimum rating of 500 amps cold cranking at (-18 C) and 99 minutes reserve capacity rating at 80 (2r C)Battery Devices Battery IsolatorsIf you are rigging an engine equipped with fully regulated charging system and the engine's charging system is supporting two or more batteries, you should only use one of the following battery isolator devices: One engine to two batteriesModel 2420 One engine to three batteriesModel 2424 Two engines to three batteriesModel 2423 The above battery isolators are manufactured by Guest Products Battery "On-Off" Switches you are using battery masterOn-Off" switch in the engine 's 12 volt electrical system, be sure that the switch is equipped with "make before-break" circuit to protect the engine's battery charging system Avoid switching while the engine is running and never turn the switch "off" while the engine is running Battery Testing Battery electrolyte is an acidic solution and should be If electrolyte contacts any part of the body, immediately flush the exposed area with liberal amounts of water and seek medical aid as soon as possible