Overview
The LiitoKala Lii-38S+ 18650 3800mAh battery is a high-performance Li-ion rechargeable cell designed for consistent 3.7V output and long cycle life. With up to 1000 recharge cycles and ≤38mΩ internal resistance, it provides stable and efficient energy for high-drain applications.
Main Features
- High capacity 3800mAh for extended runtime
- Stable 3.7V nominal voltage with 4.2V charge limit
- Low internal resistance ≤38mΩ ensures high discharge efficiency
- Up to 1000 recharge cycles for long service life
- Flat-top design; customizable with Nickel, Pointed, or PCB options
- Lightweight at approximately 47g
- Compatible with standard LiitoKala smart chargers
- Reliable safety and performance for various applications
Technical Specifications
| Parameter | Value |
|---|---|
| Brand | LiitoKala |
| Model | Lii-38S+ (Flat) |
| Type | Li-ion 18650 |
| Capacity | 3800mAh |
| Nominal Voltage | 3.7V |
| Discharge Voltage Range | 2.75–4.2V |
| Limited Charge Voltage | 4.2V |
| Internal Resistance | ≤38mΩ |
| Recharge Cycles | Up to 1000 |
| Rechargeable | Yes |
| Size | 65.5mm × 18.5mm |
| Weight | 47g ±1g |
| Optional Versions | Nickel / Pointed / PCB |
Applications
Primary Uses
Perfect for flashlights, headlamps, vape mods, RC models, and other devices requiring consistent high current from a single 18650 Li-ion cell.
Extended Benefits
Used in power banks, solar storage units, and UPS backup systems, offering long-lasting, rechargeable energy for outdoor and industrial environments.
Compatibility / Upgrade
The Lii-38S+ pairs seamlessly with LiitoKala intelligent chargers and protection circuits, making it an excellent choice for DIY 18650 battery packs and maintenance replacements.
Product FAQ
Can this battery be used in flashlights or vape mods?
Yes, the Lii-38S+ is suitable for flashlights, vape devices, and other high-drain tools requiring 18650 Li-ion cells.
Is the Lii-38S+ a protected or unprotected cell?
This model is typically unprotected. Versions with PCB protection are available upon request.
Can I use this battery in a DIY power bank or battery pack?
Yes, it’s ideal for assembling custom 18650 battery packs, with optional nickel or pointed terminals for configuration flexibility.
What charger should be used for this battery?
Use any LiitoKala smart charger designed for Li-ion 18650 cells, such as Lii-202, Lii-402, or Lii-500.
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