f) Be extra cautious to reduce risk of dropping a metal tool onto battery. It might spark or
short-circuit battery or other electrical part that may cause explosion.
g) Remove personal metal items such as rings, bracelets, necklaces, and watches when
working with a lead-acid battery. A lead-acid battery can produce a short-circuit current
high enough to weld a ring or the like to metal, causing a severe burn.
h) Use charger for charging a LEAD-ACID battery only. It is not intended to supply power to
a low voltage electrical system other than in a starter-motor application. Do not use
battery charger for charging dry-cell batteries that are commonly used with home
appliances. These batteries may burst and cause injury to persons and damage to
property.
i) NEVER charge a frozen battery.
12. PREPARING TO CHARGE
a) If necessary to remove battery from vehicle to charge, always remove grounded terminal
from battery first. Make sure all accessories in the vehicle are off, so as not to cause an
arc.
b) Be sure area around battery is well ventilated while battery is being charged. Gas can be
forcefully blown away by using a piece of cardboard or other non metallic material as a
fan.
c) Clean battery terminals. Be careful to keep corrosion from coming in contact with eyes.
d) Add distilled water in each cell until battery acid reaches level specified by battery
manufacturer. This helps purge excessive gas from cells. Do not overfill. For a battery
without cell caps, carefully follow manufacturer's recharging instructions.
e) Study all battery manufacturers' specific precautions such as removing or not removing
cell caps while charging and recommended rates of charge.
f) Determine voltage of battery by referring to car owner's manual and make sure that
output voltage selector switch is set at correct voltage. If charger has adjustable charge
rate, charge battery initially at lowest rate.
13. CHARGER LOCATION
a) Locate charger as far away from battery as dc cables permit.
b) Never place charger directly above battery being charged; gases from battery will
corrode and damage charger.
c) Never allow battery acid to drip on charger when reading gravity or filling battery.
d) Do not operate charger in a closed-in area or restrict ventilation in any way.
e) Do not set a battery on top of charger
14. DC CONNECTION PRECAUTIONS
a) Connect and disconnect dc output clips only after setting any charger switches to off
position and removing ac cord from electric outlet. Never allow clips to touch each other.
b) Attach clips to battery and chassis as indicated in 15(e), 15(f), 16(b), and 16(d).
15. FOLLOW THESE STEPS WHEN BATTERY IS INSTALLED IN VEHICLE. A SPARK NEAR
BATTERY MAY CAUSE BATTERY EXPLOSION. TO REDUCE RISK OF A SPARK NEAR
BATTERY:
a) Position AC and DC cords to reduce risk of damage by hood, door, or moving engine
part.
b) Stay clear of fan blades, belts, pulleys, and other parts that can cause injury to persons.
c) Check polarity of battery posts. POSITIVE (POS, P, +) battery post usually has larger
diameter than NEGATIVE (NEG, N,-) post.
d) Determine which post of battery is grounded (connected) to the chassis. If negative post
is grounded to chassis (as in most vehicles), see (e). If positive post is grounded to the
chassis, see (f).
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