HARD-NV-8400MAH-140C
2 products
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High-Capacity 8400mAh Graphene Power for 1/8 & 1/10 RC Models
The DXF 8400mAh 140C Graphene LiPo Hardcase Gold Series is built for RC enthusiasts seeking extreme runtimes, heavy brushless current delivery, and rock-solid reliability. With massive 8400mAh capacity and advanced graphene matrix construction, these battery packs provide consistent punch, minimal voltage sag under heavy throttle, and cooler operating temperatures throughout intense racing and bashing sessions.
Enclosed in an impact-resistant gold hardcase shell that shields internal cells against severe shocks, rollovers, and track debris. Available in 3S (11.1V) and 4S (14.8V) configurations in both single packs and dual-pack combos, with factory-soldered high-current plug options including EC5, Deans (T-Plug), TRX, XT60, XT90, XT150, and QS8.
Key Advantages & Performance Highlights
- Extended 8400mAh Capacity: Maximizes runtime for endurance track racing, long bashing sessions, and demanding multi-motor setups.
- Explosive 140C Discharge Output: Delivers instantaneous throttle response and massive burst current without excessive heat buildup.
- Premium Graphene Matrix: Promotes superior electron transfer, low internal resistance, and enhanced cycle life over hundreds of runs.
- Reinforced Gold Hardcase: Rugged outer shell protects cells from physical deformation, punctures, and battery tray vibration.
- Heavy-Duty Wiring & Connectors: High-strand flexible silicone wiring paired with gold-plated connectors (EC5, T-Plug, TRX, XT60, XT90, XT150, QS8) for minimal connection resistance.
- Pack Options: Available in 1 PCS single pack or 2 PCS twin pack for seamless dual-battery wiring (such as dual-3S for 6S, or dual-4S for 8S setups).
Series Specifications & Configuration Matrix
| Model / Config | Nominal Voltage | Capacity | Discharge Rate | Dimensions (L×W×H) | Approx. Weight |
|---|---|---|---|---|---|
| 3S Hardcase (3S2P) | 11.1V (Max 12.60V) | 8400mAh | 140C | 138 × 48 × 36 mm | 493g ± 8g |
| 4S Hardcase (4S2P) | 14.8V (Max 16.80V) | 8400mAh | 140C | 138 × 48 × 48 mm | 632g ± 10g |
Target Applications & RC Compatibility
Engineered for high-powered 1/8 and 1/10 scale RC platforms requiring heavy continuous current and extended battery compartment space:
- 3S (11.1V): 1/8 & 1/10 scale brushless buggies, monster trucks, short course trucks, and racing boats (e.g. Arrma Senton/Typhon/Granite 3S, Traxxas Slash/Rustler/Bandit VXL, Losi Tenacity, Team Associated).
- 4S (14.8V): 1/8 scale competition buggies, truggies, monster trucks, and speed run cars (e.g. Arrma Outcast 4S, Kraton 4S, Traxxas Maxx, Team Losi Racing 8IGHT-E).
- Dual-Pack Setups (6S / 8S): Run two 3S packs in series for 6S monster platforms (Arrma Kraton 6S, Notorious 6S, Traxxas E-Revo 2.0), or two 4S packs for 8S beasts (Traxxas X-Maxx, Arrma Kraton 8S).
- Multi-Field Applications: High-draw RC speedboats, RC tanks, rock bouncers, and commercial multi-rotor drone platforms.
Usage & Safety Guidelines
- Balance Charging: Always use a dedicated LiPo balance charger set to standard LiPo mode (4.20V cut-off per cell). Never exceed 4.20V per cell.
- Recommended Charge Rate: Charge at 1C (8.4A) or lower for optimal cell longevity and safety. Never charge unattended.
- Low-Voltage Cutoff: Ensure ESC low-voltage cutoff is activated and set to at least 3.2V–3.4V per cell under load.
- Storage Care: If storing for longer than 48 hours, balance discharge or charge to storage voltage (3.80V–3.85V per cell) and store in a fireproof LiPo bag.
- Environmental Safety: Keep batteries away from high temperatures, moisture, and combustible materials during charging and storage.
Why Pilots & Racers Choose DXF POWER
Founded in 2000, DXF has specialized in premium high-performance lithium battery development for RC racers and power enthusiasts around the globe. Using grade-A automated cell manufacturing, rigorous quality inspections, and direct factory distribution, DXF delivers exceptional power-to-weight ratios and battle-tested durability. Every battery pack is backed by our dedicated 180-day manufacturer warranty and expert support.
Watch DXF Power in Action
Explore more RC test runs, bash sessions, and setup tips on our official YouTube channel: DXF Official YouTube Channel (@stevehou8316)


