User manual
DBK30A  Rechargeable Battery Module 
Overview …… 1 
Hardware Setup …… 3 
Configuration …… 3 
Power …… 3 
Charging the Battery Module …… 5 
DBK30A – Specifications …… 6 
Reference Notes: 
o  Chapter 2 includes pinouts for P1, P2, P3, and P4. Refer to pinouts applicable to 
your system, as needed. 
o  In regard to calculating system power requirements, refer to DBK Basics located 
near the front of this manual. 
Overview 
DBK30A Front Panel 
DBK30A contains two rechargeable nickel-cadmium batteries and shares the same base dimensions as 
other LogBook, DaqBook, and related DBK module products, allowing for convenient stacking with 
included splice plates and dual-lock tabs. 
The included power adapter converts AC power to 24 VDC for charging DBK30A’s two battery packs. 
Automatic charging circuits recharge the internal batteries quickly and safely when connected to the 
supplied AC adapters. For trouble-free operation you must fully charge the batteries before use. The 
charged battery runtime depends on the current load and mode of operation. 
An internal slide switch (SW2) determines the unit’s mode. The two modes are: 
•  14 VDC Mode (default) 
•  28 VDC Mode  
You should check the power requirements of each component in your system, and then 
verify that the power source can provide sufficient power to meet your runtime 
requirements. 
Fully charge DBK30A’s batteries before use. 
DBK Option Cards and Modules  879795  DBK30A, pg. 1 










