1. Introduzione
The Streamlight UltraStinger 77751 is a professional-grade rechargeable tactical flashlight designed for demanding conditions. It delivers 1100 lumens and 65000 candelas, providing a long-range, precision-focused beam. This manual provides essential information for the safe and effective use, maintenance, and troubleshooting of your UltraStinger flashlight.

Figure 1: Streamlight UltraStinger 77751 Rechargeable Tactical Flashlight. This image shows the flashlight from an angled perspective, highlighting its robust black aluminum body and large reflector head.
2. Informazioni di sicurezza
Always read and understand all instructions and warnings before using this product. Failure to do so may result in electric shock, fire, or serious injury.
- Sicurezza di l'ochji: Do not stare directly into the light beam. The intense light can cause temporary vision impairment or eye damage.
- Sicurezza di a batteria: Use only approved Streamlight batteries and charging equipment. Improper battery use can lead to fire or explosion.
- Calore: The flashlight head may become hot during prolonged use on high settings. Handle with care.
- Avvertimentu chimicu: Stu pruduttu cuntene chimichi cunnisciuti da u Statu di California per causà cancer è difetti di nascita o altre dannu riproduttivu. Lavà e mani dopu a manipulazione.
3. Cuntenutu di u pacchettu
Verificate chì tutti l'articuli sò presenti in u vostru pacchettu:
- Streamlight UltraStinger Flashlight
- Rechargeable Battery (installed)
- PiggyBack Charger
- 120-Volt AC Charger
- Guida di l'Usuariu (stu documentu)
4. Setup
4.1 Carica iniziale
Before first use, fully charge the UltraStinger flashlight. The PiggyBack charger allows for simultaneous charging of the flashlight and a spare battery (if purchased separately).
- Connect the 120-Volt AC charger to a power outlet and then to the PiggyBack charger.
- Insert the UltraStinger flashlight into the charging slot of the PiggyBack charger. Ensure it clicks securely into place.
- The charging indicator light on the charger will illuminate (typically red) to indicate charging is in progress.
- A full charge takes approximately 10 hours. The indicator light will change color (typically green) when charging is complete.

Figure 2: Streamlight UltraStinger with PiggyBack Charger and 120V AC adapter. This image displays the flashlight docked in its charging cradle, connected to the AC power adapter.
5. Operating Instructions
5.1 Power Button and Modes
The UltraStinger features a multi-function push-button switch for power and mode selection.
- Momentary On: Lightly press and hold the power button for momentary illumination. Release to turn off.
- Custante On/Off: Fully press and release the power button to turn the flashlight on or off.
- Selezzione di modu: From the "on" position, rapidly press and release the power button to cycle through the brightness modes: High, Medium, Low, and Strobe. The flashlight will remember the last selected mode when turned off and on again.
5.2 Light Output and Runtime
The UltraStinger offers three brightness levels and a strobe function:
| Modu | Lumens | Candela | Distanza di fasciu | Runtime |
|---|---|---|---|---|
| Altu | 1100 | 65,000 | 510 m | 1 h 30 min |
| Medium | 350 | 21,000 | 290 m | 4 h 30 min |
| Bassu | 90 | 5,000 | 141 m | 16 ore |
| Strobe | 1100 | 65,000 | 510 m | 3 h 15 min |

Figure 3: FL1 Standard performance table for the UltraStinger, detailing lumens, candela, beam distance, and runtime for each mode.

Figure 4: Illustration of different beam patterns (Tradition, HL, HPL). The UltraStinger features a focused beam for long-range illumination.
6. Mantenimentu
6.1 Cura di a batteria
- To maintain optimal battery life, recharge the flashlight regularly, ideally after each use or when the beam noticeably dims.
- Mantene a linterna in un locu frescu è seccu quandu ùn hè micca in usu.
- Se a linterna ùn serà micca aduprata per un periudu prolongatu, sguassate a bateria per prevene una fuga potenziale.
- Replacement batteries are available from authorized Streamlight dealers.
6.2 Pulizia
- Clean the lens with a soft, lint-free cloth. Avoid abrasive materials that could scratch the lens.
- Wipe the body of the flashlight with a damp cloth as needed. Do not immerse the flashlight in water.
7. Risoluzione di prublemi
| Prublemu | Causa Possibile | Soluzione |
|---|---|---|
| A torcia ùn si accende. | Batteria bassa o scarica. | Charge the battery fully using the PiggyBack charger. |
| A cunnessione di a batteria libera. | Ensure the battery is properly seated and the tail cap is tightened. | |
| Luce fioca o scintillante. | Low carica batterie. | Ricaricate a bateria. |
| Dirty electrical contacts. | Clean battery and flashlight contacts with a clean, dry cloth. | |
| A torcia ùn si carica micca. | U caricatore ùn hè micca cunnessu bè. | Verify the AC adapter is plugged into a live outlet and securely connected to the PiggyBack charger. Ensure the flashlight is correctly seated in the charger. |
| Batteria o caricatore difettu. | Contact Streamlight customer support for assistance. |
8. Specificazioni
- Mudellu: Streamlight UltraStinger 77751
- Fonte di luce: LED
- Lumens massimi: 1100
- Max Candela: 65,000
- Distanza di travi: Finu à 510 metri
- Fonte di energia: Batteria NiMH ricaricabile (inclusa)
- Materiale: Alluminiu machinatu
- Culore: Neru
- Dimensioni: 11.82" (P) x 2.37" (L) x 2.37" (A)
- Pesu di l'articulu: 1.24 liri
- Resistenza à l'acqua: IPX4 (resistente à l'acqua)
- Resistenza à l'impattu: 3-Meter Tested
- Cumpunenti inclusi: Flashlight, Battery, PiggyBack Charger, 120-Volt AC Charger, User Guide
9. Garanzia è Support
9.1 Garanzia infurmazione
The Streamlight UltraStinger 77751 is covered by a Garanzia limitata a vitaQuesta garanzia copre i difetti di materiali è di fabricazione per tutta a durata di vita di u pruduttu, eccettu batterie, lampadine, abusi è usura normale. Per i dettagli cumpleti di a garanzia, vi pregu di cunsultà u situ ufficiale di Streamlight. websitu o cuntattate l'assistenza clienti.
9.2 Assistenza Clienti
For technical assistance, warranty claims, or to purchase replacement parts, please visit the official Streamlight website or contact their customer service department. You can find more information and contact details at the Streamlight Store.





