Battery Information - Mercury 135 OptiMax Manual

1. Turn off the engine before servicing the battery.
2. Add water as necessary to keep the battery full.
3. Make sure the battery is secure against movement.
4. Battery cable terminals should be clean, tight, and correctly installed. Positive to positive and
negative to negative.
5. Make sure the battery is equipped with a non-conductive shield to prevent accidental shorting of
battery terminals.

Battery Information

Failure to properly secure the battery leads can result in a loss of power to the Digital Throttle and
Shift (DTS) system, leading to serious injury or death due to loss of boat control. Secure the battery
leads to the battery posts with hex nuts to avoid loose connections.
• Do not use deep cycle batteries. Engines must use a marine starting battery with 1000 MCA, 800
CCA or 180 Ah.
• When connecting engine battery, hex nuts must be used to secure battery leads to battery posts.
Torque nuts to specification.
Description
Hex nuts
IMPORTANT: Battery cable size and length is critical. Refer to engine installation manual for size
requirements.
Decal needs to be placed on or near battery box for future service reference. One 5/16 in. and one
3/8 in. hex nut are supplied per battery for wing nut replacement. Metric hex nuts are not supplied.
MAINTENANCE
WARNING
!
NOTICE - DTS & Optimax Engines
DO NOT USE DEEP CYCLE BATTERIES!
DTS (Digital Throttle and Shift) applications and
Optimax engines must use a marine starting
battery with 1000 MCA, 800 CCA, or 180 Ah.
rating.
IMPORTANT:
Battery cable size and length is critical. Refer to
engine installation manual for size requirements.
Place decal on or near battery box for future service
reference. 5/16" and 3/8" hex nuts supplied for
wing nut replacement. Metric hex nuts not supplied.
Nm
13.5
13.5Nm (120 lbs. in.)
DO NOT
USE WING
NUTS.
37-895387
39
lb. in.
120
3486
lb. ft.