Streamlight Rechargeable NiMH Battery for Survivor & Knucklehead Flashlights. Genuine Streamlight Parts and Streamlight Accessories are designed specifically for your Streamlight flashlight, so you know you can trust them for quality and performance. This Rechargeable NiMH Battery Pack is a replacement or spare for the one that comes with Streamlight Survivor and Knucklehead model fire and rescue flashlights. The battery is compatible with the Knucklehead Flood, Knucklehead Spot, Knucklehead Haz-Lo Flood, Knucklehead Haz-Lo Spot, and Survivor models.