


Massive 4800mAh Energy: Packed with a premium 21700 cell that delivers an extended, uncompromising runtime to keep your high-performance gear alive when it matters most.
15A High-Drain Beast: Maintains a rock-solid, consistent 3.6V nominal voltage, custom-engineered to fully unleash the peak burst potential of demanding tactical flashlights.
Advanced Safe Shield: Features an integrated, high-precision protection circuit that continuously safeguards against overcharge and over-discharge for ultimate long-term reliability.
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Free shipping on all order above $49.99 to most countries.
Most flashlights can directly get 5 years warranty; battery and accessories get 1 year warranty.
Any questions, please email to info@sperasflashlight.com

Designed with safety in mind ⚙️, the SPERAS N48 battery features built-in protection against overcharge and over-discharge. This helps maintain long-term performance while extending battery lifespan.
Its durable construction also improves impact resistance, making it perfectly suitable for demanding outdoor environments and heavy-duty tactical use.

| Brand / Model | SPERAS / N48 |
| Battery Type | 21700 Rechargeable Li-ion Battery |
| Capacity | 4800 mAh |
| Nominal Voltage | 3.6 V |
| Energy | 17.28 Wh |
| Max Continuous Discharge | 15A |
| Dimensions (Length x Diameter) | 74 mm (+0.3 mm ~ 0.5 mm) × 21.25 mm (+0.1 ~ 0.15 mm) |
| Net Weight / Gross Weight | 70.91 g / 79.52 g |
| Warranty | 1 year (contact us for support or replacement) |
It works perfectly with high-performance flashlights 🔦 and other electronic devices that support standard 21700 lithium-ion batteries.
Yes, it is a fully rechargeable lithium-ion battery designed for hundreds of charge cycles.
Yes, it has built-in protection circuits safeguarding against overcharge and over-discharge to ensure maximum safety during use and charging.
With a massive 4800mAh capacity, the runtime is significantly extended. Exact duration depends on the power consumption and output mode of the specific device being used.
| Model | N48 |
|---|---|
| Length | 74 mm |
| Diameter | 21.25 mm |
| Net weight | 70.91 g |
| Gross weight | 79.52 g |
| Battery Type | 21700 |
| Battery Voltage | 3.6V |
| Power | 17.28 Wh |
| battery capacity | 4800 mAh |
| Continue output Current | 15A |
