DMEGC 2-Pack 18650-35E Rechargeable Battery 3500mAh 3.7V Flat Top Li-ion 10A CDR for Flashlight, Headlamp, Solar Light & Long-Run Devices

Key Features

• High 3500mAh Capacity: delivers significantly longer runtime compared to standard 2600mAh cells, reducing the need for frequent recharging.

• Stable 10A CDR: Optimized for medium to low-power devices, providing smooth and reliable energy output.

• Flat Top Design: Widely compatible with mainstream flashlights, headlamps, and battery holders.

• Low Self-Discharge Rate: Retains capacity well during storage, ideal for seasonal devices like solar lights.

• Convenient 2-Pack: Perfect for multi-cell devices or keeping a spare ready.

Parameters

• Brand: DMEGC

• Model: 18650-35E

• Chemistry: Lithium-Ion (Li-ion)

• Capacity: 3500mAh

• Nominal Voltage: 3.6V / 3.7V

• Max Charge Voltage: 4.20V ± 0.05V

• Discharge Cut-off Voltage: 2.50V

• Max Continuous Discharge Current (CDR): 10A

• Max Pulse Discharge Current: Approx. 15A – 20A

• Top: Flat Top

• Protection: Unprotected (Bare Cell)

• Weight: Approx. 48-50g / cell

Applications

• Everyday Flashlights: Ideal for 200-800 lumen home, cycling, or camping flashlights where runtime is key.

• Headlamps: Perfect for night running, caving, or work tasks requiring long illumination.

• Solar Lights / Garden Lights: Best matched scenario. Provides excellent overnight storage for solar-charged lights.

• Low-Power Electronics:

  • Smart sensors / alarms

  • GPS trackers

  • Vintage radios / music players

• Battery Pack Assembly: For building low-drain 12V/24V lighting systems or backup power for security devices.

• ⚠️ NOT Suitable for: High-power tactical lights (1000+ lumens), heavy-duty power tools (drills), or high-performance RC models (15A+).

FAQ

Q: Why does a 3500mAh battery last longer?
A: 3500mAh means it stores more energy. It can provide approx. 30%-40% more runtime than a standard 2600mAh battery under the same load.

Q: What does 10A Continuous Discharge Rating (CDR) mean?
A: It means the battery can safely deliver 10 amps of current steadily. This is sufficient for most flashlights and headlamps but not enough for high-power power tools that require 15A-30A.

Q: Can I use this battery for my high-power tactical flashlight (e.g., Fenix TK75)?
A: Not recommended. High-powered lights often need 15A-30A drain cells. Using the 35E may result in lower brightness or trigger low-voltage protection.

Q: Is this battery good for solar lights?
A: Absolutely. Solar lights require high capacity rather than high current. The 3500mAh capacity allows the light to store more energy and stay on longer during cloudy days.

Q: Does this battery have a protection circuit?
A: No. This is a bare cell. It is recommended to use a device or charger with built-in over-charge/over-discharge protection.