Efest Slim K2 Battery Charger is a compact, intelligent two-bay charger designed for a wide variety of lithium-ion cells. With LED displays, protective circuitry, and USB power input, it’s ideal for retail shelves and tech accessory bundles.
Key Features
- Dual Charging Bays — can charge two batteries simultaneously ...
Efest Slim K2 Battery Charger is a compact, intelligent two-bay charger designed for a wide variety of lithium-ion cells. With LED displays, protective circuitry, and USB power input, it’s ideal for retail shelves and tech accessory bundles.
Key Features
- Dual Charging Bays — can charge two batteries simultaneously
- USB Input via Micro-USB — powered by 5 V USB sources
- 1 A Output per Bay — efficient CC/CV charging performance
- LED Display Indicators — shows real-time charging status per slot
- Safety Protections — including reverse polarity, overcharge, short circuit, and auto cut-off
- Wide Battery Compatibility — supports common battery types like 10440, 14500, 16340, 18650, 20700, 21700, 26650, etc.
- Auto-Detect / Activation Feature — charger recognizes the battery and begins charging automatically
Specifications
- Input: 5 V DC (Micro-USB)
- Output: 5 V / 1 A per bay
- Auto Cut-Off Voltage: 4.20 V (±0.05 V)
- Operating Temperature: 0 °C to 40 °C
- Storage Temperature: –40 °C to 70 °C
Wholesale & Retail Benefits
- Essential Accessory — every device user needs a battery charger at some point
- Compact & Shelf-Friendly — small footprint makes it easy to display or bundle
- High Utility — appeals to users of mods, flashlights, power tools, and other battery-powered gear
- Accessory Bundling Opportunity — sell with batteries, wraps, and power supplies
- Low Return Risk — robust protections reduce failure/scam complaints
Usage & Best Practices
- Insert batteries fully until they make secure contact; charger will start automatically
- Never charge batteries with damaged wraps or exposed terminals
- Do not leave charging unattended for extended hours — remove when fully charged
- Use a quality USB cable rated for sufficient current — lower quality cables may limit performance
- Store the charger in a cool, dry place when not in use to prolong its life
Delivery
All orders placed and paid for before 4:00pm Monday - Friday will be dispatched the same day for next working day delivery. Orders placed after 4:00pm will be dispatched the next working day. Orders are shipped Monday to Friday excluding bank holidays via DPD.
