Axis
Owners
Manual
2019
Page 76
IMPORTANT NOTE FOR ALL FOUR (4) BATTERY SYSTEMS: Note that the bilge pumps will contin-
ue to pull power, even when the isolator switch is in the OFF position on the boats so equipped.
This is to prevent swamping of the boat and potential sinking. Bear in mind that in order for
the bilge systems to work the battery will necessarily be drained, and eventually it will cause the
battery to run out of charge. Therefore, under these circumstances, the boat should periodically
be started and the engine run for a suicient time to allow the voltmeter reading to return to
the desired range of at least 13.6 volts. How often and how long the engine should be run to
recharge the battery will vary depending on the type, brand and age of the batteries. The boat
owner should frequently recharge the battery until determining the approximate time period
in which the battery retains suicient charge to operate the bilge system, and also to start the
engine.
Axis boats are equipped with one of four (4) systems, which are explained as follow:
Null Battery System. The most basic electrical supply system, this set-up allows for a single
battery. There will be two battery cables, one positive (+) and one negative (-).
Two-Position Isolator System. In addition to the components in the Null Battery System,
a very basic isolator switch allows the operator to turn a single battery either ON or OFF. The
advantage to this system over the Null Battery System, where the system is always charging
from the alternator, is that it can allow the battery to cease operation and retain residual energy
within the battery until needed.
Three-Position VSR System. Very similar to the Two-Position Isolator System explained
above, this system is the basic operation for a dual-battery-equipped boat. The Three-Position
VSR System switch has ON, OFF and COMBINED settings. This option comes with a VSR (Volt
Sensitive Relay). Customers are supposed to operate the boat in the ON position and only use
the COMBINE setting in case of an emergency.
Four-Position Isolator System. Because of the electrical requirements to enjoy the Axis
boat in its fullest experience, most models are equipped with two (2) batteries. The optional
battery ON-OFF switch is located in a panel behind a door on the port side of the walk-through
between the bow and center deck.
(The numbers 1, 1+2, and 2 refer to the two batteries that you purchase for the boat. The
batteries are located in battery holders under the observer seat. As part of the routine mainte-
nance, boat owners should routinely verify that the batteries are secure within the holders.)
There are four markings on the knob:
• OFF
• 1
• 1 + 2
• 2
OFF means that all power to the battery is shut
down. The battery will not be able to re-charge
while in the OFF position. This is the appropriate
setting for periods of inactivity with the boat, un-
less the boat is in the water. When the boat remains
in the water, it will be necessary for the bilge pumps
to periodically and automatically pump out residual
water in the bilge system. See above description of
how the bilge system operates automatically.
Battery 1 is the “house” battery or main battery.
It should be rated at least 800 cold cranking amps
(cca), and a spiral cell battery is preferable. Battery 2 is the back-up battery (used as a back-up,
the smaller 500 cca battery is acceptable; however, you may prefer that your back-up also be
800 cca).
Normally, when the battery switch is not turned to OFF, it should be set on “1.” However, if
Battery 1 is somewhat drained or sluggish, turning to “1+2” can be very helpful in providing
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