Overview
The LiitoKala Lii-25A 18650 2500mAh is a high-performance Li-ion rechargeable battery designed for dependable 3.7V output and efficient energy transfer. Featuring a flat-top design, low internal resistance, and up to 1000 charge cycles, it provides consistent, safe power for portable electronics and tools.
Main Features
- 2500mAh capacity for strong and stable output
- 3.7V nominal voltage, 4.2V full charge, 2.5V discharge cutoff
- Low internal resistance (<35mΩ) for improved efficiency
- Up to 1000 recharge cycles with minimal capacity loss
- Equipped with explosion-proof safety valve for secure use
- Reliable performance across variable temperatures
- Ideal for compact electronics and moderate-drain devices
Technical Specifications
| Parameter | Value |
|---|---|
| Brand | LiitoKala |
| Model | Lii-25A |
| Type | Li-ion 18650 (Flat Top) |
| Capacity | 2500mAh |
| 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 |
| Maximum Discharge Current | 5A (typical) |
| Size | 18.3 × 65.0 mm |
| Weight | Approx. 46g |
| Safety Features | Explosion-proof valve, temperature protection |
Applications
Primary Uses
Perfect for Bluetooth speakers, POS machines, dash cameras, and massagers, providing reliable energy delivery and long-lasting runtime.
Extended Benefits
Suitable for beauty instruments, flashlights, DIY power banks, and RC devices, offering steady voltage and safe Li-ion chemistry for daily use.
Compatibility / Upgrade
Compatible with all LiitoKala smart chargers and battery protection boards, making it a dependable replacement cell for 18650-based devices and packs.
Product FAQ
Can the LiitoKala Lii-25A be used in flashlights or vape mods?
Yes, it supports flashlights, vape mods, and other medium-drain devices requiring 18650 Li-ion cells.
Is the Lii-25A a protected or unprotected battery?
It is an unprotected flat-top cell, suitable for use in equipment with built-in protection circuits.
How should this battery be charged for best results?
Recharge when the capacity drops to 10–20%. Avoid full depletion for optimal battery life and performance.
Does low temperature affect runtime?
Yes, performance will temporarily decrease in cold environments but return to normal once warmed to room temperature.
Which charger is recommended for the Lii-25A?
Use a LiitoKala smart charger or another dedicated 4.2V Li-ion charger with overcharge protection.
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