Takeuchi TB014 Werkstatt-Handbuch Seite 490

(b)Measurement with hydrometer
When using a hydrometer, the measured specific gravity
must be corrected according to the temperature at the
time of measurement. The specific gravity of battery
electrolyte is defined with 20 °C as the standard. Since
the specific gravity increases or decreases by 0.0007
when the temperature varies by 1 °C, correct the value
according to the equation below.
S = St + 0.007 ( t - 20 )
20
Specific gravity and remaining battery charge
Specific Discharged quantity
gravity of electricity
(20 °C)
1.28
1.26
1.24
1.23
(3) Terminals
Clean if corroded or soiled.
(4) Mounting bracket
Repair or replace it if corroded.
Retighten if loosened.
(5) Battery appearance
Replace the battery if cracked or deformed.
Clean with fresh water if contaminated.
Measured electrolyte
temperature
Measured specific gravity
Specific gravity converted
to 20
Remaining charge
(%)
0 100
10 90
20 80
25 75
Battery charge measurement
with a hydrometer
Rubber bulb
Glass tube
(%)
Hydrometer structure
How to read hydrometer
25
2. Inspection and adjustment
Float
Float