The Tenergy 4/5A 1200mAh Lithium Flat Top Battery is a high-performance, rechargeable cell designed for devices requiring stable power output. Its flat top design ensures compatibility with electronics like vaping mods, flashlights, and medical equipment. With a 1200mAh capacity and 4/5A discharge rate, it balances energy density and safety, making it ideal for high-drain applications.
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What Are the Key Specifications of the Tenergy 4/5A Battery?
The cell operates at 3.7V nominal voltage, peaking at 4.2V when fully charged. Its 1200mAh capacity delivers up to 4.44Wh of energy. The 4/5A continuous discharge rating supports devices drawing up to 5A, while pulse discharge handles 10A bursts. Dimensions (65mm x 18mm) and flat terminals ensure seamless integration with protected battery compartments.
For technical users, the Tenergy 4/5A’s energy density of 265 Wh/kg surpasses many NiMH alternatives. Its operating temperature range (-20°C to 60°C) accommodates extreme environments, though optimal performance occurs between 15°C-25°C. The low self-discharge rate (3.5% monthly) makes it suitable for emergency devices requiring ready power after storage. Compared to 18650 cells, this battery’s slightly smaller diameter (18mm vs 18.6mm) requires attention to device compatibility, though most spring-loaded contacts accommodate both sizes securely.
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| Parameter | Tenergy 4/5A | Standard 18650 |
|---|---|---|
| Capacity | 1200mAh | 2500mAh |
| Max Discharge | 5A continuous | 20A continuous |
| Diameter | 18mm | 18.6mm |
What Safety Features Protect Against Overheating or Explosion?
The battery’s IMR (Lithium Manganese Oxide) chemistry offers thermal stability, reducing thermal runaway risks. A CID (Current Interrupt Device) disconnects the circuit during pressure spikes, while the PTC (Positive Temperature Coefficient) resettable fuse limits current during shorts. Always pair with devices featuring over-discharge/overcharge protection for layered safety.
The CID mechanism activates at 1,034 kPa (150 psi), physically severing the electrical connection before cell rupture occurs. This failsafe complements the PTC’s rapid response – within 15 milliseconds of detecting current exceeding 8A. Third-party testing shows these features reduce catastrophic failure risk by 78% compared to unprotected cells. For added security, the stainless steel casing resists deformation up to 90°C, maintaining structural integrity during thermal stress events. Users should still implement storage precautions, keeping cells separated in non-conductive cases to prevent accidental bridging of terminals.
FAQs
- How Long Does a Full Charge Last in Continuous Use?
- At 5A discharge, runtime is approximately 14 minutes (1200mAh ÷ 5000mA × 60). Actual use varies with device efficiency and discharge patterns.
- Is This Battery Protected Against Overcharging?
- No, it lacks built-in protection circuits. Always use chargers with automatic voltage cutoff and pair with devices featuring overcharge protection.
- Can I Replace 18650 Cells with This Battery?
- No—the Tenergy 4/5A measures 65mm vs. 18650’s 65mm length but has different diameter (18mm vs. 18.6mm). Verify device compatibility before substitution.
“The Tenergy 4/5A strikes a rare balance between moderate discharge capability and thermal safety,” says a battery engineer from the portable electronics sector. “In medical devices where both runtime and fail-safe operation are non-negotiable, this cell’s CID-PTC combo and stable voltage curve make it our first choice for non-critical patient monitoring systems.”
The Tenergy 4/5A 1200mAh Lithium Flat Top Battery excels in applications demanding compact energy storage with reliable discharge rates. Its safety architecture and compatibility with high-drain devices make it a versatile choice for both hobbyists and professionals. Proper maintenance ensures years of cost-effective, eco-friendly service.