Many original batteries may of been in a Blue Case. CAPACITY: 180mAh.
5/V150HT 6V NIMH 5 PIN PCB MOUNT Rechargeable Backup Battery
Varta Mempac 4/V150H 4.8V Rechargeable Backup Battery NIMH PCB MOUNT
Replacement for Varta Mempac 6/V150H 7.2V Rechargeable Backup Battery 2 Pin
4/V150H 4.8V Rechargeable Backup Battery NIMH 3 PIN PCB MOUNT
Battery Backup 5V 9V 12V 10400mAh Output Uninterruptible Power Supply Battery Backup Standby
Easy Installation Networking Module Backup Battery for Car, Replacement Backup 3G0915089 Auto Part Component Power Supply