Updating d600 firmware
If no voltage is present, a solid-state switch may be in the “off” position and needs activating.
Connect the voltmeter to the outer terminals, take a 100-Ohm resistor (other values may also work), tie one end to ground and with the other end touch each terminal while observing the voltmeter.
The connections are often unmarked; however, the positive and negative are commonly located at the outer edges of the connector and the inner contacts accommodate the clock and data.
(The one-wire system combines clock and data.) For safety reasons, a separate thermistor wire is brought to the outside.
Warming the battery with your hand is sufficient to detect a small change in resistor value when looking for the correct terminal on the battery.
Figure 1 illustrates a battery with six connections.
Some batteries are equipped with a solid-state switch that is normally in the “off” position and no voltage is present at the battery terminals.
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