Description
Command extreme power with the TianPeng 21700-50XG, a tabless 21700 cell that redefines high-drain performance. This 4-pack delivers a commanding 40A continuous discharge and a massive 5000mAh capacity, making it the ultimate energy core for FPV drones, heavy-duty power tools, high-performance e-scooters, and competition. The tabless design achieves an ultra-low internal resistance of approximately 5mΩ, eliminating voltage sag and minimizing heat under even the most punishing loads. The flat top design ensures universal compatibility with spring-contact devices and simplifies spot-welding for custom battery packs. When your project demands the pinnacle of both current and capacity, the TianPeng 50XG is the undisputed champion.
Key Features
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75A Continuous / 120A+ Pulse Discharge – Delivers staggering current for the most power-hungry equipment. Handles drone punch-outs, angle grinder start-ups, and super-sub-ohm builds without hesitation.
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5000mAh Massive Capacity – Industry-leading energy density for an ultra-high-drain cell. Enjoy extended flight times, longer work sessions, and greater range compared to 4000mAh competitors.
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Tabless (All-Tab) Technology – Reduces internal resistance to ~5mΩ, dramatically lowering heat generation and ensuring instantaneous power delivery with rock-steady voltage.
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Flat Top Design – Universally compatible with 21700 spring-contact chargers, battery trays, and flashlights. The flat terminal is ideal for spot-welding nickel strips in DIY packs.
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4-Pack Convenience – Perfect for building a high-current 4S FPV pack, equipping a dual-battery mod, or powering a compact e-scooter battery module.
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TianPeng A-Grade Quality – Rigorously tested for consistent performance, low self-discharge, and reliable cycle life trusted by demanding professionals.
Parameters
Applications
Recommended For
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FPV Drones & Long-Range UAVs: 120A+ pulse handles aggressive punch-outs and acrobatics. 5000mAh capacity dramatically extends flight time beyond standard LiPo packs.
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Heavy-Duty Cordless Power Tools: Angle grinders, circular saws, rotary hammers, and chain saws operate at full torque without voltage sag or thermal throttling.
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High-Performance E-Scooters & E-Bikes: Build compact, high-power battery packs (e.g., 10S1P or 12S1P) with fewer parallel cells needed. Always use a quality BMS.
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Competition-Level Vaping: Super-sub-ohm mechanical mods and high-wattage regulated devices (builds down to ~0.05Ω) benefit from near-zero voltage drop and immense pulse headroom.
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Extreme-Output Flashlights: FET-driven multi-emitter searchlights and hot-rod torches sustain turbo modes at 40–60A with constant brightness and long runtime.
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RC Racing Cars & Boats: Instantaneous 100A+ bursts provide explosive starts and corner exits.
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Portable Spot Welders & High-Power DIY Projects: Multi-cell configurations deliver massive short-circuit currents for the most demanding applications.
Not Recommended For
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Low-Power Long-Runtime Devices: Solar lights, wireless sensors, and doorbells. The 50XG is severe overkill; use a Samsung 50G (5000mAh 10A) for better economy.
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18650-Only Devices: This is a 21700 cell (21mm x 70mm) and will not physically fit.
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Standard USB Power Banks: The extreme performance is completely wasted in low-current applications.
FAQ
Q: What is the true continuous discharge rating — 40A or should I design for less?
A: The TianPeng 50XG is officially rated for 40A continuous discharge. However, many professional pack builders design to a 60A continuous ceiling to maximize cycle life and keep cell temperatures well within safe limits. For short, intense bursts, the cell can handle up to 120A+. If you intend to run at 75A continuously, ensure excellent active cooling.
Q: Can I use this battery for my FPV drone? How does it compare to LiPo?
A: Absolutely. While a LiPo can deliver extreme bursts, a 4S 50XG pack provides far greater energy density (5000mAh vs. ~1500mAh for a similar-weight LiPo), giving you dramatically longer flight times. The 75A continuous and 120A+ pulse ensure you still get explosive throttle response.
Q: Is this battery suitable for vaping? What resistance is safe?
A: Yes, it is a top-tier choice for extreme sub-ohm vaping. With 75A continuous and 120A+ pulse at 3.6V nominal, it can safely power builds down to approximately 0.05Ω. Always calculate your exact current using Ohm's law, and never exceed the pulse rating for more than a few seconds.
Q: What is tabless technology and why does it matter?
A: A tabless cell eliminates the thin metal tabs that connect the electrode layers inside the battery. Instead, the entire edge of the electrode connects directly to the terminal. This dramatically lowers internal resistance (~5mΩ), reduces heat, and allows for much higher currents with less voltage sag — essential for FPV, power tools, and high-drain applications.
Q: Do I need a special charger for tabless cells?
A: No special charger is required. The 50XG charges like any standard 21700 Li-ion cell. Use a quality CC-CV charger. Charging at 0.5C (2.5A) is recommended for longevity, though the cell can accept up to 5A.
