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Onset HRB-U30-S100 Manual

Replacement battery

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Important Lead Acid Battery Information

Use protective eye wear when testing, charging and/or

handling the batteries.

Do not attempt to disassemble batteries.

Contact with sulfuric acid may cause harm. Should contact

occur, wash skin and/or clothes with liberal amounts of water.

Do not throw batteries into fire; batteries so disposed may

rupture or explode.

Disassembled batteries are hazardous waste and must be

treated accordingly.

Dispose of old batteries per local regulations.

Inside this Package

- Replacement battery (1)

Before You Begin - Testing the Battery

Before you install the battery, use a voltmeter to make sure it has an

adequate charge. If the charge is less than 3.0 volts, charge the battery

externally with a current-limited variable power supply.

Hold the battery across a constant voltage source of 4.5 volts with a current

limit of 1 Amp. It takes up to 24 hours to fully charge a dead battery.

IMPORTANT: Do not apply more than 4.6 volts absolute maximum to the

battery. Do not exceed 1 Amp of current when charging. If the battery gets

hot, immediately stop charging the battery.

HRB-U30-S100

Replacement Batteries

Doc #: 12696-E, Part #: MAN-HRB-U30

Page 1 HRB-U30-S100 Replacement Batteries Important Lead Acid Battery Information Use protective eye wear when testing, charging and/or handling the batteries. Do not attempt to disassemble batteries. Contact with sulfuric acid may cause harm. Should contact occur, wash skin and/or clothes with liberal amounts of water.
Page 2: Replacing The Battery
Replacing the Battery Follow these steps to replace the battery: 1. Open the U30 enclosure and disconnect the external power source (AC adapter or solar panel) first, then the battery, and finally any Smart Sensors. For U30/GSM and U30/Wi-Fi models, use a 5/16” wrench to unscrew the antenna connection. For the U30/Ethernet model, disconnect the Ethernet cable.
Page 3 6. Connect the red wire of the cable to the positive (+) terminal and the black wire to the negative (-) terminal. Terminals are color coded. ALWAYS confirm polarity. 7. Install the battery with the positive (+) terminal towards the upper right corner of the case.
Page 4 8. Re-install the battery bar. If the bar has foam on one side, make sure the foam side faces down. CAUTION: Make sure the battery cable is routed below the battery bar as shown to avoid possible shorting hazard! 9. Re-install the logger into the enclosure. For U30/GSM and U30/Wi-Fi models, reconnect the antenna.