The Tenergy 14.8V 5200mAh Lithium Ion Rechargeable Battery 31804 is a high-performance power source designed for devices requiring sustained energy output, such as drones, RC vehicles, and industrial equipment. With its 4-cell lithium-ion configuration, it balances capacity, voltage stability, and durability, making it ideal for high-drain applications. Its built-in protection circuit ensures safety against overcharging and short circuits.
How to Prevent Lithium-Ion Battery Fires and Explosions
How Does the Tenergy 14.8V 5200mAh Battery Compare to Alternatives?
The Tenergy 31804 outperforms competitors with its 5200mAh capacity and 14.8V output, providing longer runtime than standard 4000mAh batteries. Unlike nickel-based alternatives, lithium-ion chemistry offers lighter weight and higher energy density. Its discharge rate (20C continuous) suits high-power devices, while competitors often max at 15C. Additionally, Tenergy’s proprietary BMS enhances lifespan (1000+ cycles) compared to generic brands (500-700 cycles).
To illustrate the differences, consider the following comparison table:
| Feature | Tenergy 31804 | Brand X 4000mAh | Brand Y 5000mAh |
|---|---|---|---|
| Cycle Life | 1000+ | 600 | 800 |
| Weight | 420g | 550g | 480g |
| Max Discharge Rate | 20C | 15C | 18C |
What Safety Features Are Integrated into the Tenergy 31804?
This battery includes multi-layered safeguards: overcharge protection (shuts off at 16.8V), over-discharge cutoff (10V), short-circuit prevention, and temperature monitoring. The hardened PVC casing resists punctures, and balanced cell charging minimizes voltage deviation. These features exceed UL2054 standards, reducing risks of thermal runaway—a common issue in cheaper lithium-ion packs.
The temperature monitoring system uses NTC thermistors to track individual cell heat levels in real-time. If any cell exceeds 60°C during charging or discharging, the battery management system (BMS) automatically interrupts current flow. This precision control is particularly crucial for drone applications where sudden temperature spikes can occur during aggressive maneuvers. Furthermore, the balanced charging protocol ensures no single cell exceeds 4.2V during charging cycles, preventing voltage imbalances that lead to premature aging.
Which Devices Are Compatible with the Tenergy 14.8V Battery?
Compatible with any device requiring a 4S Li-ion configuration (14.8V nominal). Common uses include DJI Phantom drones, Traxxas RC cars, medical carts, and CCTV systems. Check device voltage tolerances: the 31804 operates between 10V–16.8V. Avoid pairing with equipment designed for 12V lead-acid batteries unless using a voltage regulator.
How to Maximize the Lifespan of Your Tenergy Lithium Ion Battery?
Store at 40-60% charge in cool (15–25°C), dry environments. Avoid full discharges; recharge when voltage drops to 12V. Use a balanced charger (like Tenergy TB6B) monthly to equalize cell voltages. Limit exposure to high loads above 20C. Following these steps can extend cycle life by 30% compared to casual use.
Deep discharges below 10V accelerate sulfation in lithium-ion cells, permanently reducing capacity. For long-term storage exceeding 3 months, perform a partial discharge to 3.7V per cell and store in anti-static bags. Periodically check stored batteries every 2 months, topping up charge to maintain 40-60% levels. Avoid stacking multiple batteries during storage to prevent casing deformation from weight pressure.
Why Choose Tenergy Over Other Lithium Ion Brands?
Tenergy employs Grade A Li-ion cells with ≤1% self-discharge/month versus 3–5% in budget brands. Their 18-month warranty includes free replacements for capacity drops below 80% within 500 cycles. Independent testing shows 15% lower internal resistance than industry averages, translating to cooler operation under load.
When Should You Replace the Tenergy 31804 Battery?
Replace when capacity falls below 70% of original (≈400 cycles under heavy use) or if cells show ≥0.5V deviation. Physical signs include swelling, >2-hour charge times, or runtime decreases >40%. Regular capacity testing with a load tester helps track degradation.
Expert Views
“The Tenergy 31804’s balance between energy density and discharge rates makes it a standout for prosumer drones. Its cell-matching process ensures minimal impedance variance—critical for maintaining stable flight controllers. Most failures we see stem from improper charging; pairing it with Tenergy’s TB6B charger cuts failure rates by half.” — Drone Industry Power Systems Analyst
FAQs
- Can the Tenergy 31804 Be Used in Parallel/Series Configurations?
- Yes, but only with identical batteries and a professional BMS. Parallel setups increase capacity (e.g., 10,400mAh for two), while series connections raise voltage (29.6V for two). Never mix old/new or differently cycled units.
- Does the Battery Include a Charger?
- No—it requires a compatible Li-ion charger (8.4V–16.8V range). Tenergy recommends their TB6B or TN480U models for optimal cell balancing.
- Is Air Shipping permitted?
- Yes—it meets IATA 965 Section II standards for lithium batteries. Includes required UN38.3 certification paperwork.