Robinair TIFZX-7 Nickel-Metal Hydride Battery Pack for TIFZX-1 Leak Detector Robinair replacement Nickel Metal Hydride (NIMH) Battery Pack For use with Robinair's TIFZX-1 Leak Detector 4.8V, 1.8 Amp Hr Rechargable - use with TIFZX-1's charger Sold individually TIF Instruments TIFZX-7 Nickel-Metal Hydride Battery Pack For TIFZX-1 Leak Detector TIF Instruments Nickel-Metal Hydride Battery Pack for TIFZX-1 Leak Detector. It is a Nickel-Metal Hydride battery pack. Nickel-Metal Hydride battery pack For TIFZX-1 Leak Detector