Battery charger Nitecore NEW i4 — 4‑bay charger, AC 100–240V, output 9–12V, supports LiFePO4/Li‑ion/Ni‑MH, sizes AAAA C D AAA AA, black

The Nitecore NEW i4 is a 4‑bay household battery charger designed for multi‑chemistry compatibility and compact everyday use. It supports LiFePO4, Li‑ion and Ni‑MH rechargeable cells and accepts a range of sizes including AAAA, C, D, AAA and AA. The charger operates from AC 100–240V mains and delivers an output range of 9–12V, combining automatic cell recognition with intelligent charging routines to manage up to four batteries simultaneously. With dimensions of 94.8 × 140 × 37 mm and a weight of 0.202 kg, the unit is suitable for home, workshop or travel use where reliable charging and safe handling are required.

Advantages

The Nitecore NEW i4 provides automatic detection of battery chemistry and optimized charging current for each slot, reducing user intervention while improving charge efficiency. Its compact form factor and lightweight construction make it easy to store and transport. The charger supports multiple common rechargeable sizes and balances charging across bays to help extend battery life. Built‑in safety measures protect against overcharging, reverse polarity and short circuits, offering reliable operation for mixed battery sets.

Suitable for

• Charging household Ni‑MH AA/AAA rechargeable batteries for remotes, toys and clocks
• Charging Li‑ion cells used in flashlights, portable electronics and power banks (compatible sizes)
• Maintaining LiFePO4 cells for applications requiring stable voltage chemistry
• Simultaneous charging of mixed sizes and chemistries in home or workshop environments
• Travel use where AC 100–240V compatibility is required

Key specifications

• Number of charging bays: 4
• Supported chemistries: LiFePO4, Li‑ion, Ni‑MH
• Supported battery sizes: AAAA, C, D, AAA, AA
• Input voltage: AC 100–240V
• Output voltage range: 9–12V
• Dimensions: 94.8 × 140 × 37 mm
• Weight: 0.202 kg

How to use

Plug the charger into an AC 100–240V outlet and insert batteries into the slots observing polarity markings. The charger will automatically detect battery chemistry and apply the appropriate charging routine for each bay. Do not force cells into the compartment; ensure correct seating to avoid poor contact. Monitor charging status via the charger’s indicator lights (if present) and remove batteries once fully charged or when the charger indicates completion. Allow the charger to cool between extended charging cycles to maintain performance.

Usage recommendations

Use only compatible rechargeable cells in the supported sizes and chemistries. Charge batteries of different chemistries or states of charge in separate bays if the manufacturer advises; avoid mixing damaged or leaking cells. Store the charger in a dry, ventilated area and disconnect from mains when not in use for extended periods. For best battery longevity, follow the battery manufacturer's storage and charging guidelines.