Universal 4-Slot Battery Charger – Charge any combination of batteries simultaneously
Tired of juggling multiple chargers for different battery types? This universal charger is the ultimate solution. Featuring 4 fully independent slots and broad compatibility with Li-ion, Ni-MH, and Ni-CD chemistries, this charger manages different battery types at the same time—with no compromises and zero interference between channels.
Note: A USB-C cable is included. A USB wall adapter is not included; please ensure your power source provides at least 2A for optimal performance.
Why choose this model? (Key Benefits):
- 4 fully independent slots — Each channel detects and charges separately, allowing you to mix and match, such as charging an 18650 Li-ion alongside two AA Ni-MH batteries.
- Individual LCD display — Monitor the exact status of every battery in real-time without needing to remove them.
- Extensive 7-format compatibility — Supports AA, AAA, 14500, 16340, 18650, 21700, and 26650, covering virtually every battery in your home.
- USB-C 5V/2A input — Connects easily to any power bank, laptop, or modern wall adapter, eliminating the need for proprietary cables.
- Fire-retardant PC casing — Built with heat-resistant materials to enhance safety during long charging sessions.
- Compact and portable — Designed to fit easily into a backpack, making it perfect for travel.
Performance and Features
Each of the 4 independent slots features its own detection circuit. It automatically recognises the battery chemistry and applies the correct charging profile, whether it is Li-ion 3.6/3.7V, Ni-MH, or Ni-CD. Because there is no communication between channels, a fully depleted battery in one slot will not affect the charging speed of the others. The LCD screen provides a clear overview of all active slots, while the fire-retardant PC housing offers superior safety compared to standard plastic alternatives.
| Parameter | Details |
|---|---|
| Product Type | Universal rechargeable battery charger |
| Number of Slots | 4 independent slots |
| Chemistry Compatibility | Li-ion 3.6/3.7V, Ni-MH, Ni-CD |
| Supported Formats | AA, AAA, 14500, 16340, 18650, 21700, 26650 |
| Display | LCD with per-channel monitoring |
| Power Input | USB-C 5V / 2A |
| Casing Material | Fire-retardant PC |
| Package Contents | 4-slot charger + USB-C cable (wall adapter not included) |
Package Contents
- 1x 4-Slot Universal Charger with LCD display
- 1x USB-C cable
Frequently Asked Questions
Can I charge an 18650 Li-ion and AA Ni-MH batteries at the same time?
Yes. The slots are completely independent; each one automatically detects the battery type and applies the correct charging profile. You can mix any chemistry and format without restrictions.
Does it work with larger 21700 and 26650 batteries?
Yes, the slots are designed to accommodate larger formats up to 26650. If you use torches or devices with high-capacity batteries, they are fully compatible.
What USB-C power source should I use? Do I need a special adapter?
Any power source providing 5V and at least 2A will work, such as a USB wall plug, power bank, or laptop USB port. A wall adapter is not included in the box—simply use one you already own.
Does the LCD screen show the status of all slots simultaneously?
Yes, you can monitor all 4 channels at once without removing the batteries. This is particularly useful when charging mixed types and you want to see which slot finishes first.
Is it safe to leave it charging overnight?
The fire-retardant PC casing significantly reduces thermal risks compared to standard plastic. We recommend using a certified power source and, for the first few uses, keeping an eye on the device until you are familiar with its operation.
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