SPERAS S50 21700 5000mAh Battery
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- $23.66
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Warranty
Most flashlights can directly get 5 years warranty; battery and accessories get 1 year warranty.
Note
Any questions, please email to info@sperasflashlight.com
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SPERAS S50: 5000mAh 21700 Li-ion Battery
Fuel your high-performance gear with the SPERAS S50. This premium 21700 rechargeable lithium-ion battery features a massive 5000mAh capacity and a high-drain 15A max discharge rate. Built with premium LG cells and comprehensive safety circuits, it guarantees peak performance and extreme reliability for your most demanding tactical and search flashlights.
Unleash True Performance
Premium LG Cell & High-Drain Output
Not all batteries are created equal. The SPERAS S50 is powered by a 100% new, authentic LG internal cell, guaranteeing true 5000mAh capacity without false advertising.
With a continuous discharging current of 9.8A and a maximum burst of 15A, it easily drives high-lumen flashlights to their maximum Turbo output without voltage sagging.
Intelligent Safety Protections
Safety is our top priority. The S50 features a highly sophisticated built-in protection circuit board (PCB) to ensure the maximum lifespan of your battery and the safety of your devices.
- Triple Defense: Prevents Over-charging, Over-discharging, and Short-circuiting.
- Impact Resistant: Features a unique structural design that protects the internal core from drops and severe shocks.
Backed by SPERAS Quality
We stand behind our power sources. The SPERAS S50 comes with a comprehensive 1-Year Manufacturer Warranty.
If you experience any performance issues or defects, we will exchange it or provide a new one immediately. Buy and operate your gear with absolute confidence.
🔦 The Perfect Power Source for SPERAS Flashlights
The S50 battery is specifically engineered to handle the extreme power demands of our professional lighting gear. It is the highly recommended primary or backup power source for:
- SPERAS P4 (4000 Lumens Searchlight) - Maximizes the P4's turbo output and ensures up to 167 hours of runtime.
- It is also fully compatible with most standard high-drain 21700 flashlights on the market.
Technical Specifications
- Brand: SPERAS
- Model: S50
- Internal Cell: LG Cell
- Capacity: 5000mAh
- Voltage: 3.6V (18.0Wh)
- Charging Current: 1A (Recommended), 2A (Max)
- Discharging Current: 9.8A (Continuous), 15A (Max)
- Dimensions: 75mm (Length) x 21.4mm (Diameter)
- Net Weight: 72.8g
- Warranty: 1 Year
Frequently Asked Questions (FAQ)
Can I use this 21700 battery in an 18650 flashlight?
No. The 21700 battery is larger (21.4mm diameter, 75mm length) than an 18650 battery. It will not fit in flashlights designed strictly for 18650 batteries. Please ensure your flashlight or device specifically supports 21700 sized batteries.
Is this a protected or unprotected battery?
The SPERAS S50 is a Protected battery. It features a built-in intelligent circuit board at the positive pole that actively prevents over-charging, over-discharging, and short circuits, making it exceptionally safe for daily use.
What kind of charger should I use?
We recommend using a high-quality smart charger specifically designed for lithium-ion batteries. For optimal battery life, a charging current of 1A is recommended, though it safely supports up to 2A fast charging.
Why does my high-lumen flashlight need a "High Drain" 15A battery?
High-performance flashlights (like the 4000-lumen SPERAS P4) require massive amounts of power instantly to reach their Turbo modes. Standard batteries will suffer from voltage drop and fail to activate Turbo. The S50's 15A max discharge rate easily handles these extreme power demands.
| Model | S50 |
|---|---|
| Length | 74.84mm |
| Diameter | 21.37mm |
| Net weight | 71.1g |
| Gross weight with Plastic Box | 78.8g |
| Battery Type | 21700 |
| Battery Voltage | 3.6V |
| Power | 18.0Wh |
| battery capacity | 5000mAh |
| Continue output Current | 5A |
| Max current | 20A |
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