Industrial Batteries & Energy Storage
sales@regalelectro.com.au
The messages ‘- - - -‘ and ‘OF’ displayed on screen are not indicators of errors.
‘- - - -‘ is displayed when input terminals have been opened.
‘OF’ is displayed when the input values exceed the set range. Reset the range
correctly.
9.3 Frequently Asked Questions
9.3.1 Can Manganese Batteries be Used?
The period for which the instrument can be used continuously (approx. 10 hours) is measured using
alkaline batteries. Note that use of manganese batteries will reduce this time considerably (to
approx. three hours).
9.3.2 Can Nickel Metal Hydride Batteries be Used?
Since nickel metal hydride batteries discharge power in different ways than alkaline batteries, when
using nickel metal hydride batteries, the instrument’s battery level indicator will be highly
inaccurate. Note that there is a possibility under such conditions of the instrument losing power
suddenly.
9.3.3 Setting Permissible Values
For determining battery wear, first measure the internal resistance in a new or good battery.
The graph below shows the relation between storage capacity and initial value of internal resistance
in a lead-acid battery. ‘CS’, ‘HS’ and ‘MSE’ denote lead-acid battery types.
Internal resistance of an MSE (sealed stationary lead-acid battery) can be read at approximately
1mΩ (100Ah) and approximately 0.13mΩ (1000Ah). Under conditions of battery wear, internal
resistance rises to 1.5-2 times its initial value.
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