Battery Testing; New Battery Preparation - Snapper NZM21521KWV Safety Instructions & Operator's Manual

Section 5 - ADJUSTMENTS & REPAIR
State of Charge
100% Charged w/ Sulfate Stop
100% Charged
75% Charged
50% Charged
25% Charged
0% Charged

5.10.4. BATTERY TESTING

There are two types of battery tests: Unloaded and
Loaded. The unloaded test is the procedure that
will be discussed. It's the simplest and most
commonly used. An unloaded test is made on a
battery without discharging current. To perform
unloaded testing, check charge condition using
either a hydrometer or voltmeter.
1. Using a voltmeter, voltage readings appear
instantly to show the state of charge. Remember
to hook the positive lead to the battery's positive
terminal, and the negative lead to the negative
terminal.
2. A hydrometer measures the specific gravity of
each cell. The specific gravity tells the degree of
charge; generally, a specific gravity of about 1.265
to 1.280 indicates full charge. A reading of 1.230
to 1.260 indicates the battery should be charged
before testing. The Battery Condition Chart shows
the charge level as measured by syringe float
hydrometer, digital
hydrometer.

5.10.5. NEW BATTERY PREPARATION

1. Remove battery from carton.
2. Place battery in a well ventilated area on a level
non-concrete surface.
3. Remove battery cell caps. Fill cells as required
with electrolyte (purchased separately) to proper
level. Filling battery with electrolyte will bring the
battery to 80% charged state.
4. With cell caps removed, connect battery
charger to battery terminals; RED to positive (+)
and BLACK to negative (-) terminal.
IMPORTANT: DO NOT place anything in battery other
than specified electrolyte.
WARNING
DO NOT OVERFILL!
Battery Condition Chart
Syringe Hydrometer
1.280
1.265
1.210
1.160
1.120
Less than 1.100
voltmeter and five-ball
Digital Voltmeter
12.80v
12.60v
12.40v
12.10v
11.90v
Less than 11.80v
WARNING
DO NOT attempt to service or charge the battery
while it is installed in the machine. DO NOT use
"BOOST" chargers on the battery.
5. Slow charge the battery at 1 amp for 10 hours
to bring the battery to full charge.
6. After charging, check level of electrolyte and
add as needed to bring to proper level
7. Reinstall cell caps.
8. Install battery into power unit.
9. Connect positive (+) cable (red) first, from
wiring harness to the positive terminal (+) on
battery using bolt and nut provided in hardware
bag. Connect negative (-) cable (black) last, to
negative terminal (-) on battery using bolt and nut.
Apply a small amount of grease over terminals to
prevent corrosion.
10. Install battery retainer and positive terminal
cover.
WARNING
Shield the positive terminal with terminal cover
located on battery harness. This prevents metal from
touching the positive terminal, which could cause
sparks. Cables must be connected to battery
terminals in the proper position. RED (Positive)
cable must go to the ( + ) terminal. BLACK (Negative)
cable must go to the ( - ) terminal.
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Five Ball Hydrometer
Five Balls Floating
Four Balls Floating
Three Balls Floating
Two Balls Floating
One Ball Floating
Zero Balls Floating