This is Forte Lithium Battery of model ER14250 with 3.6V 2.4 amp of 1/2AA size. These types of batteries are used in(1) Meter (water, electricity, gas meter, and AMR) (2) Alarm or security equipment (smoke alarm system and detector) (3) GPS system, GSM system (4) Real-time clock, Car electronic (5) Digital remote control machines (6) Radio and other military facilities (7) Remote surveillance systems

Note:

This battery pack consist only of Single-cell