The evva 18650 3400mah protected 37v liion rechargeable battery is designed for high-drain devices that demand reliable power and integrated safety. This cell combines a 3.7 volt lithium ion chemistry with a protection circuit, 3400 milliampere-hour capacity, and durable 18650 form factor to support consistent energy delivery.
Engineered for demanding applications, this protected battery reduces risks from overcurrent, overvoltage, and deep discharge. Users who rely on compact power sources appreciate its stable voltage and safety features, making it suitable for flashlights, tools, and portable equipment.
| Specification | Value | Benefit | Typical Use Cases |
|---|---|---|---|
| Cell Model | 18650 | Standard cylindrical size, wide compatibility | Flashlights, vapes, portable devices |
| Nominal Voltage | 3.7 V | Matches typical liion device requirements | Power tools, LED gear, battery packs |
| Capacity | 3400 mAh | Higher runtime between charges | High-drain flashlights, work lights |
| Protection Circuit | Integrated PCM | Guards against overcharge, overdischarge, and short circuits | Consumer electronics, automated equipment |
| Safety Features | Overcurrent, overvoltage, temperature, short circuit protection | Reduces risk of unsafe operation | Tool batteries, portable power systems |
evva 18650 37v Protected Battery Specifications
Key Technical Details
The evva 18650 3400mah protected 37v liion rechargeable battery is built to demanding standards for performance and safety. Understanding these specifications helps match the cell to your device requirements.
| Parameter | Value | Measurement Condition |
|---|---|---|
| Cell Chemistry | Lithium Ion | High energy density, long cycle life |
| Nominal Voltage | 3.7 V | Standard for liion cylindrical cells |
| Capacity | 3400 mAh | Rated at 0.2C discharge |
| Impedance | Low internal resistance | Supports higher discharge currents |
| Protection Rating | PCM integrated | Automatic cutoff for safety conditions |
Performance and Compatibility
How the 3.7V Protected Cell Behaves
This battery maintains a nominal 3.7 volt output while delivering robust current capability when paired with compatible hardware. The protection module actively monitors voltage and current, automatically disconnecting the load if unsafe thresholds are detected.
Users benefit from a consistent voltage platform that supports demanding accessories without premature shutdown. The 18650 format ensures the cell fits a wide range of devices designed for cylindrical lithium ion power.
Safety and Usage Guidelines
Best Practices for Long Life
Proper handling extends both safety and cycle life for the evva 18650 protected unit. Following basic charging and storage rules reduces stress on the internal chemistry and protection circuitry.
- Use a compatible charger designed for 3.7V lithium ion cells and avoid constant trickle charging.
- Store the battery at partial charge in a cool, dry environment to minimize aging.
- Prevent physical damage, punctures, and exposure to extreme temperatures during use.
- Monitor device behavior for signs of swelling, heat, or voltage irregularities and remove from service if observed.
Final Recommendations
- Verify device voltage and current ratings match the 3.7V nominal output and 3400 mAh capacity.
- Prioritize chargers with overcurrent and overvoltage protection designed for lithium ion cells.
- Monitor battery health over time by checking runtime and any physical changes.
- Replace the cell if swelling, excessive heat, or significant capacity loss occurs.
FAQ
Reader questions
Can I use this battery in any 18650 device rated for 3.7V?
Check the device voltage range and discharge current limits first; the protection circuit may add slight overhead, so ensure compatibility with devices that accept 3.7V liion cells and can handle the 18650 size.
What happens if I accidentally overcharge the evva 18650 cell?
The built-in protection module will typically open the circuit to stop further charging once the upper voltage limit is reached, helping to prevent unsafe conditions, although persistent overcharging can still stress the cell.
How can I tell if the protection circuit is activating during use?
If the device suddenly cuts power while the battery still shows charge, the protection may be responding to overcurrent, high temperature, or voltage limits; allow the battery to cool and verify the device specifications.
Is it safe to solder wires directly to this battery for custom projects?
Soldering can expose the cell to high heat and mechanical stress, which may damage the internal protection circuitry or electrodes; prefer spot welding or pre-wired battery packs designed for hobby applications.