CAUTION
Only top up with demineralised water. Never top up
before charging (risk of overflow). Do not overfill the
cells.
NOTE
For more information, refer to the instructions
supplied with the battery.
Electrical equipment: checking the elec-
trolyte density
Measuring the density gives an accurate indi-
cation of the charging status of each cell in an
open lead battery only. This measurement can
be taken before or after charging:
●
Minimum density of an 80% discharged bat-
tery: 1.14
●
High density, battery 100% charged: 1.29 to
1.32 (depending on make)
–
We recommend a reading every 1 or 2
weeks.
–
Note down the values read in your battery
monitoring logbook.
–
Lift the cover over each cell plug as descri-
bed above.
–
Carefully record the specific gravity of each
cell with the hydrometer.
–
Close the various stoppers after measure-
ment.
NOTE
If the density in the cells differs or it is very low
in certain cells, contact our service engineers.
Allowing the battery charge to fall below the
threshold of 1.14 is very detrimental to its
service life.
Maintenance
5
Electrical equipment
101
1152 807 80 01 EN - 02/2021 - 17
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