NITECORE BATTERY CHARGER GIGI D4

NITECORE BATTERY CHARGER GIGI D4 – 4-Bay Universal Digital Smart Charger

The NITECORE BATTERY CHARGER GIGI D4 (commonly referred to as the Nitecore Digicharger D4) is a microcomputer-controlled universal smart battery charger compatible with virtually all cylindrical rechargeable battery chemistries. Designed with four independent, microcomputer-controlled charging slots, the NITECORE BATTERY CHARGER GIGI D4 automatically detects battery types—including Li-ion, IMR, Ni-MH, and Ni-Cd—and selects the optimal charging mode.

As shown in the product image, the charger features a high-definition crystalline LCD display that delivers real-time information regarding voltage ( $V$ ), charging current ( $mA$ ), battery chemistry, and elapsed charging time. Constructed from ABS flame-retardant materials, the unit optimizes heat dissipation and provides individual slot monitoring to extend cell lifespan.

Key Features of the NITECORE BATTERY CHARGER GIGI D4

4 Independent Microcomputer-Controlled Bays: Enables simultaneous charging of four different battery types and chemistries without cross-slot interference.
Integrated Digital LCD Panel: Displays real-time metrics including battery status, charging mode, charging voltage, current, and elapsed time.
Universal Multi-Chemistry Compatibility: Automatically identifies and charges Li-ion, IMR, Ni-MH, and Ni-Cd batteries. Supports manual selection for LiFePO4 cells.
Intelligent Auto-Detection Circuitry: Automatically evaluates battery status and applies the correct Constant Current (CC), Constant Voltage (CV), or $Delta V / Delta t$ charging algorithm.
Comprehensive Safety Protections: Built-in protection against over-charging, reverse polarity insertion, and overheating through integrated thermal monitoring sensors.
Dual Side Function Buttons: Side-mounted MODE and SLOT buttons allow easy navigation across individual slots and manual parameter adjustments.

Common Applications and Industrial Usage

The multi-chemistry support and safety features of the NITECORE BATTERY CHARGER GIGI D4 make it suitable for various industries and applications:

High-Powered Flashlights & Tactical Gear: Charges high-drain 18650, 26650, and RCR123A Li-ion batteries used by law enforcement, outdoor adventurers, and search teams.
Vaping & Personal Electronics: Safely conditions and charges high-discharge IMR batteries used in vape mods and portable gear.
Photography & Field Production: Recharges AA and AAA Ni-MH/Ni-Cd cells for camera flashes, wireless audio transmitters, and field recorders.
Home Automation & Everyday Electronics: Serves as a single universal charging hub for household remotes, smart home sensors, and handheld meters.

Technical Specifications

The electrical, mechanical, and compatibility specifications for the NITECORE BATTERY CHARGER GIGI D4 include:

Parameter Specification	Technical Details & Operational Values
Component Classification	4-Bay Microprocessor-Controlled Universal Smart Charger
Primary Target Keyword	NITECORE BATTERY CHARGER GIGI D4
Manufacturer Model	Nitecore Digicharger D4 (D4/D4EU)
AC Power Input	AC $100text{--}240text{ V} (50/60text{ Hz}) 0.35text{ A Max}$
DC Power Input	DC $12text{ V} 1.0text{ A}$
Output Voltages	$4.2text{ V} pm 1% / 3.7text{ V} pm 1% / 1.48text{ V} pm 1%$
Output Current	$375text{ mA} times 4text{ Bays}$ / $750text{ mA} times 2text{ Bays}$
Li-ion / IMR / LiFePO4 Sizes	26650, 22650, 18650, 17670, 18490, 17500, 18350, 16340 (RCR123), 14500, 10440
Ni-MH / Ni-Cd Sizes	AA, AAA, AAAA, C
Case Material & Rating	Flame-Retardant ABS Plastic (UL 94 V-0)
Physical Dimensions ( $L times W times H$ )	$143text{ mm} times 99text{ mm} times 36text{ mm}$ ( $5.63'' times 3.90'' times 1.42''$ )
Weight	$239text{ g}$ (Without batteries and power cable)

Operating Guidelines and Best Practices

Safety Notice: Do not attempt to charge primary non-rechargeable batteries (such as Alkaline, Zinc-Carbon, or Lithium primary 3V cells) to prevent leakage, overheating, or explosion risk.

LiFePO4 Selection: When charging $3.2text{V}$ LiFePO4 cells, insert the battery and hold the side MODE button for over $2$ seconds to manually switch to LiFePO4 mode.

Low-Capacity Batteries: For small-capacity batteries ( $< 750text{ mAh}$ , e.g., 10440 or AAA), hold down the MODE button to select low-current charging ( $300text{ mA}$ ) to protect overall cell health.

Nocturnal Mode: Press and hold the SLOT button for more than $1$ second to dim/turn off the screen’s backlight for nighttime charging.

To review official international secondary battery cell charging standards and IEC safety specifications for battery equipment, consult the official IEC 62133 Secondary Cells and Batteries Safety Standard Directory.

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