4. Ensure the battery is equipped with a nonconductive shield to prevent
accidental shorting of battery terminals.
Verado Engine Battery Specifications
IMPORTANT: Verado engines require a 12‑volt absorbed glass mat (AGM)
marine starting battery that meets the minimum ratings.
For best performance, Mercury Marine does not recommend using the more
common flooded (wet cell) or gel cell type lead acid batteries for starting
Verado engines.
Each Verado engine must be equipped with its own starting battery.
If the boat application requires additional battery loads for boat accessories or
marine electronics, install an auxiliary battery, or batteries.
Choose a 12‑volt absorbed glass mat (AGM) battery that meets the following
ratings.
USA (SAE) Verado Starting Battery Rating
Required Verado starting
battery
12‑volt absorbed glass mat (AGM) battery
Required marine cranking amps
(MCA) and reserve capacity
800 minimum marine cranking amps with a
minimum reserve capacity of 135 minutes
RC25 rating
International (EN) Verado Starting Battery Rating
Required Verado starting battery
12‑volt absorbed glass mat (AGM)
battery
Required cold cranking amps
(CCA) and amp hours (Ah)
975 minimum cold cranking amps with a
minimum of 65 amp hours
NOTE: Do not use an engine starting battery that does not meet the specified
ratings. If a battery that does not meet the ratings is used, the electrical system
may perform poorly.
IMPORTANT: Boating industry standards (BIA, ABYC, etc.), federal standards,
and Coast Guard regulations must be adhered to when installing the battery.
Ensure that the battery cable installation meets the pull test requirements and
that the positive battery terminal is properly insulated in accordance with
regulations.
It is recommended (required in some states) that the battery be installed in an
enclosed case. Refer to regulations for your area.
When connecting the engine battery, hex nuts must be used to secure the
battery leads to the battery posts. Tighten the hex nuts to the specified torque.
MAINTENANCE
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Summary of Contents for 135 Verado FourStroke
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