The Torch T2 may require resetting if it has not been charged regularly. After a time without charge, the battery gets disconnected from the circuit, meaning it needs to be reset. The following video shows you how to reset the battery charge circuit:
Note - the red LED battery charge indicator dulls slightly as the circuit switches to flow through the battery. The battery will take charge soon after the circuit is reset, so you will know whether the process has been successful after about 10 minutes of charge time. The battery takes 90 minutes to fully charge.