Streamlight Flashlight Stinger PiggyBack Charger Holder Steady Charge & Battery. You can charge your Stinger flashlight while simultaneously charging a spare battery. The Streamlight Stinger PiggyBack Charger works with flashlight models: Stinger PolyStinger Stinger XT and Stinger XT HP. Note: Streamlight Stinger Flashlight PiggyBack Steady Charger does NOT include the charging cord. (Sold separately) Specifications for Streamlight Smart PiggyBack Charge Holder & Battery: Manufacturer: Streamlight Color: Black Battery Type: Sub-C NiCd 3.6V Battery Quantity: 3 Flashlight Model: Stinger HP/XT HP Additional Features: Piggyback Charger/Steady Charge Condition: New Package Contents: Streamlight Smart PiggyBack Charge Holder & Battery Extra Battery Streamlight Flashlight Stinger PiggyBack Charger Holder Steady Charge & Battery