

18650 4000mAh Protected Button Top Battery (2-Pack)
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Customers from Taiwan can make purchases at PTS Steel Shop (Taiwan) / Ruten - PTS Steel Shop, while those from the United States can visit PTS (USA).
Premium weapon lights like the Modlite OKW and PLHv2 demand massive current to push their high-candela beams downrange. Standard, off-the-shelf 18650 cells often fail under these conditions—either dropping voltage too quickly or prematurely tripping sensitive safety circuits during rapid light activation.
The factory-approved Modlite 18650 4000mAh Protected Cell is engineered specifically to eliminate these power bottlenecks. By pairing a stout 10A continuous discharge rate with an impressive 4000mAh capacity, this button-top cell allows your high-draw heads to run at peak output for extended periods. Sold exclusively in pairs, this set ensures your primary setup and your baseline kit spares are always accounted for.
Key Features & Benefits
- 10A Continuous Discharge: Sustains the heavy current draw required by high-output LED heads, ensuring your light maintains maximum candela and throw throughout the battery's curve.
- High-Capacity 4000mAh Runtime: Engineered to extend operational life on the rail or in the hand, avoiding the runtime penalties common with other high-amperage cells.
- Recoil-Resistant Button Top: Designed specifically for weapon-mounted applications. The pronounced button top ensures a solid, positive connection against body springs, eliminating light flickering or temporary blackouts caused by live-fire recoil.
- Fine-Tuned Safety Protection: Features an integrated protection circuit module that guards against over-charge, over-discharge, and shorts. The cutoff is balanced at ~18A to prevent accidental circuit trips during the light's initial turn-on current spike.
Technical Highlights
- Package Quantity: 2 Cells per pack (All sales final)
- Form Factor: 18650 Button Top (Protected)
- Typical Capacity: 4000 mAh
- Nominal Voltage: 3.6V (Full Charge: 4.2V / Discharge Cut-off: ~2.5V)
- Max Continuous Discharge Current: 10A
- Protection Cutoff Current: ~18A
- Dimensions: ~69.1 mm Length (Max 69.6mm) x 18.6mm Diameter
Applications
Optimized for full-sized 18650 rifle lights and handheld tactical bodies used by law enforcement, military personnel, and low-light training enthusiasts. Provides the long-haul power needed for comprehensive night operations, duty cycles, and extended range courses.
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