Overview
The LiitoKala LT28A is a 3.7V 18650 low-temperature Li-ion battery engineered for high-performance applications in extreme environments. With a 2800mAh capacity and up to 35A discharge current, it provides excellent power stability and cold resistance down to -40°C.
Main Features
- High discharge capability up to 35A for demanding high-drain devices
- Low internal resistance (<18mΩ) ensures efficient energy delivery
- Operates reliably in extreme cold (-40°C) and heat (+60°C)
- 2800mAh capacity balances power output and durability
- Rechargeable and reusable, supporting long operational lifespan
- Customizable options: Nickel strip, Button-top, or PCB protection available
- Suitable for professional and outdoor use in variable climates
Technical Specifications
| Parameter | Value |
|---|---|
| Brand | LiitoKala |
| Model | LT28A |
| Type | Li-ion 18650 Rechargeable Cell |
| Rated Voltage | 3.7V |
| Capacity | 2800mAh |
| Charge Voltage | 4.2V |
| Discharge Cut-off Voltage | 2.5V |
| Internal Resistance | <18mΩ |
| Max Charge Current | 8.4A |
| Max Discharge Current | 35A |
| Operating Temperature (Discharge) | -40°C to +60°C |
| Operating Temperature (Charge) | 0°C to +60°C |
| Storage Temperature | 23°C |
| Rechargeable | Yes |
| Size | 18.3 × 65.05mm ±0.1mm |
| Weight | 48g ±1g |
| Protection | Optional (Nickel / Pointed / PCB) |
| Packaging | 400pcs/box (42.5 × 22 × 16cm) |
Applications
Primary Uses:
Designed for flashlights, headlamps, power tools, and outdoor equipment, the LT28A ensures consistent discharge performance even in extreme cold environments.
Extended Benefits:
Ideal for electric bicycles, RC models, and industrial sensors, where low-temperature performance and high current output are critical.
Compatibility / Upgrade:
Fully compatible with devices using 18650 cells, including LiitoKala smart chargers (Lii-100, Lii-402). Optional configurations—flat-top, button-top, or PCB—ensure flexible integration across applications.
Product FAQ
Can the LT28A operate in freezing temperatures?
Yes. It is designed to perform reliably at temperatures as low as -40°C, maintaining steady discharge performance.
What is the maximum discharge current?
The LT28A supports up to 35A continuous discharge, suitable for high-drain tools and devices.
Is this battery protected?
The standard version is unprotected, but custom PCB-protected versions are available on request.
What charging conditions are recommended?
Charge between 0°C and 60°C using a dedicated Li-ion charger for optimal safety and battery life.
What makes this battery different from regular 18650 cells?
It is a low-temperature battery with enhanced electrolyte formulation, allowing cold-weather use and high-current output.
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