NRG USER MANUAL
SymphoniePLUS3 User Guide
SymphoniePLUS3_DataLogger_Manual
Rev. 17
support@nrgsystems.com | Page 149
31 December 2018
Battery Notes
Note that when an iPack is connected to the logger the logger is powered from the iPack 2 volt
regulator. Fresh D Cell batteries can output a voltage as high as 1.6 volts.
Always use high quality Alkaline D-Cell batteries in your loggers.
Lithium D-Cells should be used when the logger will be left unattended for an extended period of time
extreme in cold environments.
Logger Only (no iPack)
Voltage
Recommendation
>1.25 V
Good
1.15 V – 1.25 V
Fair - Recommend replacement soon.
<1.15 V
Logger & sensor performance may be
compromised. Replace immediately.
Logger with iPack Connected
Voltage
Recommendation
>1.90 V
Good
1.15 V – 1.89 V
Caution – Logger is not being powered by the
iPack battery. iPack battery is likely depleted and
in need of replacement.
A site visit is recommended.
If the battery needs to be changed, refer to instructions for the Appendix “Opening & Closing the iPack”
and change the battery as follows:
1.
Pull the battery loose from the Velcro and gently unclip the battery.
2.
Clip on the new battery. Be sure the clip fully engages the locking tab.
3.
Install the new battery into the iPack by fixing it to the Velcro. Use a slight “rubbing” motion to
make sure the Velcro sticks.