• Internal battery resistance varies considerably
depending on charge or discharge status. In
order to increase measurement precision, mea-
sure under similar conditions (e.g., full battery
charge).
• Lead-acid batteries (subjects of measurement)
have high levels of terminal resistance. For this
reason, resistance values may differ between the
case side and the tip of a terminal. Be sure to
connect the test lead to the terminals at a fixed
location. "Section 10.4 Effects of Current Den-
sity" (⇒ p.149)
• To measure battery temperature, use the
optional CLIP TYPE LEAD WITH TEMPERA-
TURE SENSOR or, for safety purposes, a non-
contact thermometer such as a radiation ther-
mometer.
• Measurement may be impossible for insulated
terminals, due to an insufficient flow of current for
measurement. In such a case, clean the terminal
(removing the insulation) before measurement.
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