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KLARUS K2A Smart Dual Slot Battery Charger & Power Bank – 2-in-1 Intelligent LED Charger for 18650, 20700 & 21700 (Protected & Unprotected) Li-ion Batteries

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Brand: · Battery Charging Devices · SKU: LV-16280 · ✓ In Stock

KSh 3,700

Overview

Built specifically for today’s high-capacity cells, the Klarus K2A charges protected and unprotected 18650, 20700, and 21700 batteries in two independent bays with up to 2A per slot. A digital display tracks current, voltage, and charge percentage, and its USB-C/USB-A power bank output means it doubles as backup power for your phone during blackouts.

Product Description

KLARUS K2A Intelligent Dual Battery Charger

The KLARUS K2A Dual Battery Charger is a compact, high-performance charger designed for 3.6V/3.7V lithium-ion batteries. It supports 18650, 20700, and 21700 batteries, including both protected and unprotected cells (up to 70–78mm long).

With dual independent charging slots, QC3.0/PD3.0 fast charging support, and smart safety protection, it delivers safe and efficient power management.

✔ Charge two batteries simultaneously
✔ Supports longer protected batteries
✔ Fast charging compatible
✔ LED charging indicators
✔ Also works as a power bank via USB output

Key Features

Dual Slot Charging – Charge two batteries simultaneously
Fast Charging Support – QC3.0 / PD3.0 compatible
Supports 18650, 20700, 21700 Li-ion batteries
Supports Both Protected & Unprotected Batteries (including longer protected cells up to 78mm)
Intelligent Charging Control – Auto-detects optimal current
LED Indicators – Easy charging status display
Compact & Lightweight – Only 40g (without batteries)

📊 Specifications

Feature	Details
Model	K2A
Input	5V/2A, 9V/2A, 12V/1.5A (QC3.0 / PD3.0)
Charging Current	2A×2 / 2A×1 / 1A×2
Output	Type-C & USB-A: 5V/2A, 9V/2A, 12V/1.5A
Compatible Batteries	3.6V / 3.7V Lithium-ion
Supported Sizes	18650 (with protection), 20700, 21700
Max Battery Length	70–78mm (supports longer protected cells)
Operating Temperature	0°C – 65°C
Weight	40g (without battery & cable)
Dimensions	5.2in × 2.28in × 1.1in

Product Specifications

Specification	Details
Charger Type	Smart Charger
Number of Slots	2
Supported Battery Sizes	18650, 20700, 21700
Fits Button Top Batteries
Fits Flat Top Batteries
Supports Protected Batteries
Supported Battery Type	Li-ion
Charging Current	0.5A / 1A / 2A
Input Port	USB-C
Display Type	LED

Specification	Details
Safety Protection	Overcharge protection, Short circuit protection, Reverse polarity protection
Warranty	5 Year Manufacturer Warranty

Compatible Batteries(4)

Wuben 21700 Battery 4800mAh Protected Li-ion | High-Drain for Flashlights, Gimbals, Solar Systems, Bike Lights | 3.7V | 20A Max
21700 4800mAh Li-ion Protected Button Top

✓ In Stock KSh 2,900
WUBEN 18650 Battery 2600mAh Protected Li-ion | Flashlight, Gimbal & Solar Light Power | Button Top Cell
18650 2600mAh Li-ion Protected Button Top

✓ In Stock KSh 1,400
LiitoKala Lii-40A 21700 Battery – 4000mAh 40A High Drain, Flat Top, Unprotected for Vapes, Flashlights, Power Tools
21700 4000mAh Li-ion Unprotected Flat Top

✓ In Stock KSh 2,000
XTAR 18650 3500mAh RAW Flat-Top High-Discharge Li-ion Battery (10A)
18650 3500mAh Li-ion Unprotected

✓ In Stock KSh 1,600

Frequently Asked Questions

4 questions

It uses a NULL input. Use a standard USB wall adapter (5V, at least 1A recommended) to power the charger. The charging cable may or may not be included — check the package contents.

No — this charger does not include batteries unless clearly stated in the product title or package. You need to purchase compatible rechargeable batteries separately.

You can buy it from Lumen Vault Kenya and enjoy fast and reliable delivery in Nairobi and across Kenya. Contact us via phone or WhatsApp for quick assistance or to place your order easily.

Yes – we offer fast nationwide delivery across Kenya within 24 hours. Nairobi & surrounding towns usually get same-day or next-day delivery.