Battery Requirements; Battery Specifications - Yamaha LF250 Owner's Manual

 If the engine ever starts in gear, the
start-in-gear protection device is not
working correctly and you should dis-
continue using the outboard. Contact
your Yamaha dealer.
The remote control unit must be equipped
with a start-in-gear protection device(s). This
device prevents the engine from starting un-
less it is in neutral.
EMU25695

Battery requirements

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Battery specifications

Standard lead-acid, AGM, gel-cell, and main-
tenance-free batteries are permitted. Use a
fully charged battery that meets the following
specifications. The battery is an important
component necessary to obtain sure engine
starting and to maintain engine performance.
The engine may not start if the battery voltage
is too low.
For North America
It is necessary to meet only two of the three
specifications (CCA, MCA, and RC) in one of
the following combinations:
 CCA/SAE and RC
 MCA/ABYC and RC
Battery rating (CCA/SAE):
512–1150 A
Battery rating (MCA/ABYC):
675–1370 A
Battery rating (RC/SAE):
124 minutes
For Oceania
It is necessary to meet the following specifi-
cations.
Battery rating (CCA/EN):
510–1080 A
Battery rating (20HR/IEC):
80 Ah
Specifications and requirements
ECM01063
NOTICE
 Do not use a battery that does not meet
the specified capacity. If a battery that
does not meet specifications is used,
the electric system could perform poor-
ly or be overloaded, causing electric
system damage.
 Do not use a battery which exceeds the
maximum CCA rating. If the batteries
are used in parallel circuit, use new bat-
teries of the same type and make sure
that the total battery rating never ex-
ceed the maximum CCA rating.
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Mounting battery
Mount the battery holder securely in a dry,
well-ventilated, vibration-free location in the
boat. WARNING! Do not put flammable
items, or loose heavy or metal objects in
the same compartment as the battery.
Fire, explosion or sparks could result.
[EWM01821]
Battery cable
The battery cable size and length are critical.
Consult your Yamaha dealer about the bat-
tery cable size and length.
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Multiple batteries
To connect multiple batteries, such as for
multiple engine configurations or for an ac-
cessory battery, consult your Yamaha dealer
about battery selection and correct wiring.
Battery isolator
Your outboard motor is capable of charging
an accessory battery separate from the start-
ing battery using an optional isolator lead.
Contact your Yamaha dealer for installation
of an optional isolator lead with over-current
protection.
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