Battery
Operation
Service
Diagnosis
CBC
Automotive
Battery
Source of Energy
Reserve while running
Stabilizer
P - C117
CBC
Automotive
Battery Converts chemical
energy into
electrical energy
CBC
Automotive
Cells
# of cells
Cell voltage
How cells are
connected
P - C120
CBC
Automotive
Chemistry
During
charging and
discharging
CBC
Automotive
Charged
+ = Pb O2 (Pure lead peroxide)
- = Pb (Sponge lead)
Solution = H2 SO4
Solution of Sulfuric acid & water
CBC
Automotive
Discharging
+ = PbSO4
- = PbSO4
Plates turn to Lead Sulfate
Solution = H2O
CBC
Automotive
Why do
batteries
freeze?
CBC
Automotive
Reversing the
cycle again
CBC
Automotive
Battery Gassing
During discharge
During charge
CBC
Automotive
Batteries do blow up
CBC
Automotive
Precautions
Remove grd. term. first
Connect grd. last
Jumper/charger on block
Corrosive
CBC
Automotive
Precautions
when jumping a battery
when using a charger
when disconnecting a cable
when using any flame source
CBC
Automotive
P -C119
Construction
CBC
Automotive
Positiveplate
Negative plate
Separator
Grid
CBC
Automotive
P - C 118
Conventional Battery
CBC
Automotive
Maintenance Free - pluses
Larger plates Longer shelf life
Resistance to Higher cold
overcharging cranking rate
P - C125
CBC
Automotive
Maintenance Free - faults
Grid growth - hot Low reserve capacity
Can’t take being Drain quick with a
deep cycled parasitic load
Shorter life
CBC
Automotive
P - C124
Low maintenance
CBC
Automotive
Hybrid Batteries
Calcium in the neg. plates
Antimony in the pos. plates
Allows deep cycling
Marine
Golf carts etc..
CBC
Automotive
P -C125
Recombination
P - C127
Has gel instead
of liquid
Result - no
gassing
higher cell
voltage .1
cold starting
CBC
Automotive
Terminals
Post
leakage
Side Terminal
“L” terminal
specialty and import
P - C127 CBC
Automotive
•Temperature
•0’ = 40%
•Charge
•Plate area
•Impurities
•Gassing
CBC
Automotive
Causes of battery failure
CBC
Automotive
Causes of failure
level
Electrolyte Cycling
Overcharging Temperature
Undercharging Vibration
Corrosion
CBC
Automotive
State of charge testing CBC
Automotive
Hydrometer
with float
with balls
CBC
Automotive
Open Circuit Voltage Test
Sealed batteries
Remove surface charge
12.6 = fully charged
12.4 = 3/4 charged
P - L128
CBC
Automotive
A battery Must be 3/4
charged before doing a
battery capacity test
CBC
Automotive
CBC
Before load testing - Check the temp. Automotive
The right battery for the vehicle
Before load testing you
must know what the
battery is, or should be
rated at
CBC
Automotive
P -C128
Ratings
Ampere-hour rating
Cold cranking rating
Reserve capacity rating
Watt hour rating
CBC
Automotive
Formula for load testing
Three times the
ampere-hour rating
CBC
Automotive
P - L130 Capacity Test
Formula for load testing
Cold cranking amps
divided by 2
CBC
Automotive
Three minute charge test
Tests for a sulfated battery
40 amps for three minutes
Should be below 15.5 volts
CBC
Automotive
Battery Drain test
or System drain test
Ammeter in series at the battery
post with everything off
GM .1
P - L137-L139 lab
CBC
Automotive
Battery leakage test
Volt - at neg post
Volt + across battery
under 10 volts
P - L126 lab. CBC
Automotive
P - L122 lab
Fast / Slow charging CBC
Automotive
Battery cleaning
CBC
P - L134 lab Automotive
That's all folks
CBC
Automotive