When your
boat has one battery, adding another one gives your boating extra life. An
additional battery is essential to keep you running if in case one of your
cells accidently runs out. If you have a second battery, you can use it to
power the engine again. However, if you are planning to do this, you need to
have the best boat battery switch to change power without interruption.
Wiring a boat battery switch is doable even if you have no technical expertise. If you can wire your switches correctly, disconnecting or combining the powers of your battery won't be a problem.
The first
step is to make sure that switch has a selector compatible for two batteries.
The switch should be able to handle the amperage when the engine is starting.
Preferably, choose a switch that has at least 250 continuous amps.
After this,
you should choose the second battery that can cater the specs of your engine.
Your installation should comply with the ABYC and US Coast Guard Standards. For
wet cell batteries, they should be contained in a battery box. For glass mat
batteries, you don't need to put them in a marine battery box. However, both of
these batteries requires brackets, and their positive terminals should have
nonconductive covers.
The battery
switch should be put on a surface with enough space. Usually, a switch can
occupy space of four to six inches wide.
Connect the
positive terminals of the two batteries to their designated posts in the
switch. Afterward, the positive cable from the engine should be attached to the
output of the switch.
Moreover, a
dual-battery system won't work if you don't have a crossover cable connected to
the negative terminals of your power source.
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