BATTERIES CAN EXPLODE!
Batteries generate explosive gasses. Keep sparks,
flames, burning cigarettes or other ignition sources
away at all times.
BATTERIES CONTAIN SULFURIC ACIDI
Sulfuric acid Is poison and can cause severe burns.
No one should work near a battery either in a vehicle or
on the bench without knowing and observing the
precautions described in this manual.
Service personnel should be familiar with the proper
procedures to be used before attempting to test or
charge a battery or to "jump" start a vehicle having a
The equipment manufacturers instructions must be
followed when any equipment such as a battery charger
or tester is used.
DANGER OF EXPLODING BATTERY
Hydrogen and oxygen gases are produced during normal
battery operation. These gases escape through the
battery vents and may form an explosive atmosphere
around the battery if ventilation is poor. Explosive gases
may continue to be present in and around the battery for
several hours after it has been charged.
To prevent ignition of gases within the battery,
sparks, flames or other Ignition sources should be
kept well away from the battery.
Be careful that tools or other metallic objects do not fall
across the battery terminals or between the ungrounded
terminal and any adjacent metallic part which is
grounded. Do not break "live" circuits at the terminals of
batteries because a spark usually occurs at a point
where a "live" circuit is broken. Make certain the charger
cable clamps or booster leads are clean and making
good connections. A poor connection can cause an
electrical arc which could ignite the gas mixture and
explode the battery.
Anyone in the vicinity of the battery when it explodes
could receive injuries, including eye injury from flying
pieces of the case or cover or acid thrown from the
battery. It is for these reasons that eye protection must
always be worn when working near batteries.
WARNING - DO NOT SMOKE, STRIKE A MATCH OR
BRING OTHER FLAME INTO THE VICINITY OF THE
BATTERY. THE EYES MUST BE SHIELDED WHEN
WORKING NEAR A BATTERY. NEVER LEAN OVER A
BATTERY DURING CHARGING, TESTING OR "JUMP
HANDLING BATTERY ACID
Use extreme care to avoid spilling or splashing battery
electrolyte (which is diluted sulfuric acid) as it can
destroy clothing and burn the skin. When working with
battery electrolyte, as when filling batteries, wear goggles
to shield eyes. Protective clothing is advisable.
Do not place a battery or acid within the reach of
Electrolyte splashed Into the eyes is extremely
dangerous. If this should happen, force the eye
open and flood It with cool, clean water for
approximately five minutes. A doctor should be
If acid (electrolyte) Is taken Internally, drink large
quantities of water or milk. Follow with milk of
magnesia, beaten egg or vegetable oil. Call
If electrolyte is spilled or splashed on clothing or the
body, or any surface of the vehicle, it should be
neutralized immediately with a solution of baking soda
and water and then rinsed with clean water.
If it becomes necessary to prepare electrolyte of a
desired specific gravity, always pour the concentrated
acid into the water - do this slowly - never pour water into
acid. A dangerous "spattering" of the liquid would result.
This is caused by extreme heat which is generated
whenever water is mixed with strong acid. Stir the liquid
continually while acid is being added.
When handling a plastic cased battery, excessive
pressure placed on the end walls could cause electrolyte
to spew through the vents. Therefore, always use a
battery carrier to lift these batteries or lift with your hands
placed at opposite corners.
BATTERY CHARGING PRECAUTIONS
Do not attempt to charge a battery unless you are
thoroughly familiar with the step by step procedure to
use. Follow the manufacturers instructions on the
charger. If the instructions are no longer legible and you
do not have literature containing the instructions, obtain
them from the manufacturer of the charger. Never use
a charger without instructions.
The room or compartment in which the battery is being
charged should be well ventilated. Follow precautions to
prevent battery explosion. Explosive mixtures of
hydrogen gas are generated during battery charging.
This gas can be exploded by a torch, match flame,
lighted cigarette, sparks from loose connections or metal
tools making contact between the terminals or the
ungrounded terminal and adjacent metal parts which are
Always shield eyes when working around the
CTS-411B - Page 3