Overview
The LiitoKala Lii-29A 18650 2900mAh is a high-capacity Li-ion rechargeable battery engineered for consistent 3.7V output, long cycle life, and dependable safety. Featuring a flat-top design, internal resistance below 35mΩ, and over 1000 recharge cycles, it provides stable, efficient power for various consumer and industrial applications.
Main Features
- 2900mAh capacity for extended runtime in compact devices
- 3.7V nominal voltage, with charge voltage 4.2V and discharge cutoff 2.5V
- Low internal resistance (<35mΩ) ensures efficient discharge
- Rechargeable up to 1000 times with minimal capacity loss
- Built-in explosion-proof valve for safe operation
- Compatible with Nickel tabs, PCB, or pointed-top customization
- Excellent temperature stability for indoor and outdoor use
Technical Specifications
| Parameter | Value |
|---|---|
| Brand | LiitoKala |
| Model | Lii-29A |
| Type | Li-ion 18650 (Flat Top) |
| Capacity | 2900mAh |
| Nominal Voltage | 3.7V |
| Full Charge Voltage | 4.2V |
| Discharge Cut-off Voltage | 2.5V |
| Internal Resistance | <35mΩ |
| Recharge Cycles | Up to 1000 |
| Standard Charge Current | 0.5C |
| Max Discharge Current | 5A (typical) |
| Dimensions | 18.4 × 65.0 mm |
| Weight | Approx. 46g |
| Custom Options | Nickel tabs, PCB, or pointed top |
| Packaging | 500 pcs/box (43×21×27 cm) |
Applications
Primary Uses
Ideal for Bluetooth speakers, POS machines, dash cameras, and portable massagers, ensuring reliable voltage output and safe performance.
Extended Benefits
Suitable for beauty instruments, flashlights, solar backup packs, and DIY power banks, offering balanced performance for high-efficiency energy use.
Compatibility / Upgrade
Works seamlessly with LiitoKala smart chargers and BMS modules, perfect for assembling custom 18650 battery packs or replacing worn cells in multi-unit systems.
Product FAQ
Can this battery be used in flashlights or small tools?
Yes, the Lii-29A performs well in flashlights, handheld tools, and other devices using 18650 Li-ion cells.
Is the Lii-29A protected or unprotected?
It is an unprotected flat-top cell, ideal for devices with built-in protection or external BMS.
How often should the LiitoKala Lii-29A be charged?
Recharge when the power level drops to 10–20%, avoiding full depletion for optimal longevity.
Does cold weather affect this battery’s performance?
Yes, runtime may temporarily reduce at low temperatures but returns to normal after warming.
Can I order the battery with Nickel tabs or PCB protection?
Yes, customization for Nickel, pointed, or PCB configurations is available for pack assembly.
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