Overview
The LiitoKala Lii-40E 26700 4000mAh is a LiFePO4 rechargeable battery engineered for high-performance energy applications. With a nominal voltage of 3.2V and over 1000 charge cycles, it offers superior stability, safety, and efficiency for electric mobility and solar storage systems.
Main Features
- High energy density and 4000mAh capacity
- LiFePO4 chemistry ensures safety and long cycle life
- Low internal resistance (<20mΩ) for efficient power delivery
- Continuous discharge rate of 3C, peak up to 6C
- Supports multi-cell combinations (4S to 20S configurations)
- Excellent thermal stability and wide operating temperature range
- Ideal for energy storage, EV systems, and high-drain tools
Technical Specifications
| Parameter | Value |
|---|---|
| Brand | LiitoKala |
| Model | Lii-40E |
| Type | LiFePO4 26700 |
| Capacity | 4000mAh |
| Nominal Voltage | 3.2V |
| Charge Voltage | 3.65V per cell |
| Discharge Cut-off Voltage | 2.20V per cell |
| Internal Resistance | <20mΩ |
| Continuous Discharge Current | 3C |
| Maximum Discharge Current | 6C |
| Cycle Life | >1000 cycles (DOD 80%) |
| Dimensions | 26 × 70 mm |
| Weight | Approx. 100g ±1g |
| Charging Temperature | 0–45°C |
| Discharging Temperature | -20–60°C |
| Storage Temperature | -20–45°C |
Applications
Primary Uses
Designed for electric vehicles, e-bikes, scooters, and golf carts, providing long-lasting power with consistent 3.2V LiFePO4 stability.
Extended Benefits
Ideal for solar storage systems, inverters, UPS backup units, and energy storage cabinets, ensuring high safety and performance in demanding environments.
Compatibility / Upgrade
Compatible with LiitoKala smart BMS systems and LiFePO4 chargers, this cell integrates easily into multi-series configurations (4S–20S) for customized pack assembly.
Product FAQ
Can the LiitoKala Lii-40E be used in electric vehicles or e-bikes?
Yes, it supports EV, e-bike, and scooter power systems with high discharge stability.
What is the maximum charging voltage for this cell?
The recommended charging voltage is 3.65V per cell using a LiFePO4-compatible charger.
How many cycles does the Lii-40E last?
It provides over 1000 cycles at 80% depth of discharge, ensuring long service life.
Can multiple cells be connected in series or parallel?
Yes, the Lii-40E supports multi-cell combinations such as 4S, 8S, 12S, or 16S configurations.
Is this battery safe for high-current discharge?
Yes, it has a 3C continuous and 6C peak discharge capability, with built-in safety tolerance against thermal or electrical abuse.
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