BPALK 12 V, 7 Ah Alkaline Battery Pack with Backup Pack


The BPALK is a battery pack for powering dataloggers and peripherals. The BPALK includes eight replaceable D cell alkaline batteries. To ensure power is not lost while the D cell batteries are replaced, the BPALK has a 12 V backup battery pack. This pack uses eight AA batteries, which are not included.

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Detailed Description

The BPALK can power a CR500, CR510, CR10, CR10X, CR800, CR850, or CR1000 datalogger, as well as the datalogger's peripherals. It consists of the alkaline batteries, battery connectors, and the temporary 12 V AA alkaline battery pack used during D cell replacement.

The BPALK can also be used as a separate auxiliary 12 V power supply to power remotely located sensors or peripherals. The system must have a common ground.

Alkaline batteries are not rechargeable, and their Amp hour ratings decrease with temperature extremes. Alkaline batteries may leak when used outside the temperature range of -25° to +50°C, or when the battery voltage drops below 9.6 V.


Nominal Rating 7.5 Ah (@ 20°C)
Batteries 8 alkaline D cells (not rechargeable)
Voltage Output 12 Vdc
Operating Temperature Range -25° to +50°C
  • 15.2 x 7.4 x 8.0 cm (6.0 x 2.9 x 3.2 in.) without connectors and mounts
  • 18.1 x 7.4 x 8.0 cm (7.1 x 2.9 x 3.1 in.) with connectors and mounts
Weight 1.8 kg (4 lb)


Datalogger Considerations

Compatible Contemporary Dataloggers

CR200(X) Series CR800/CR850 CR1000 CR3000 CR9000X

Compatible Retired Dataloggers

CR500 CR510 CR10 CR10X 21X CR23X CR9000 CR5000 CR7X

Enclosure Considerations

A desiccated, non-condensing environment is required. The BPALK includes built-in keyhole flanges for mounting to the backplate of a Campbell Scientific enclosure.

Compatible Enclosures

ENC10/12 ENC10/12R ENC12/14 ENC14/16 ENC16/18 ENC24/30 ENC24/30S

Frequently Asked Questions

Number of FAQs related to BPALK: 1