Nitecore New i4 Battery Charger

Four slots. Four batteries charging at once. The Nitecore New i4 is an intelligent quad-bay charger built for vapers running 18650, 20700, and 21700 cells. It handles Li-ion, IMR, and LiFePO4 batteries alongside Ni-MH and NiCd household types. Active Current Distribution (ACD) technology pushes up to 1500mA into a single bay, dropping automatically as more slots fill.

Output voltage covers 1.48V, 3.7V, 4.2V, and 4.35V across the full range of rechargeable chemistries. No settings to configure. Insert the cell, the charger reads it, sets the current, and stops when done. Browse Vape Batteries at Pirate Vapes for compatible cells.

Why vapers choose this:

• Active Current Distribution (ACD) technology automatically shares the available current across however many slots are occupied, so every battery charges at the fastest safe rate given the total load

• Four simultaneous slots mean you can rotate a full set of 18650 cells through one charge cycle without leaving any battery idle

• Automatic chemistry detection identifies whether the inserted cell is Li-ion, IMR, LiFePO4, or Ni-MH and sets the correct charge profile without any input from you

• Over-discharge activation recovers cells that have dropped below the normal charge threshold, which saves batteries that would otherwise be written off

• Hard safety stack covers reverse polarity, short circuit prevention, overcharging timeout, and automatic stop on completion

Nitecore New i4 Features

Twice the Speed of the Original i4

Up to 1500mA into a single occupied slot. Double the original i4's maximum. A typical 3000mAh 18650 charges from flat in roughly two hours. Load all four bays and the current redistributes: 375mA per slot. Slower, but still faster than most budget quad chargers at that load.

What ACD Technology Actually Does

The charger monitors load across all active slots in real time and redistributes current accordingly. One 18650 in slot one draws 1500mA. Add a second cell and both drop to 750mA. That redistribution is continuous, not locked at insertion. Useful for people who add cells mid-cycle.

Three Charging Modes, Chosen Automatically

CC (constant current), CV (constant voltage), and dV/dt termination. The i4 selects the mode based on the battery's chemistry and current charge state. CC pushes current during the bulk phase, CV holds voltage while current tapers, and dV/dt handles Ni-MH termination. No manual selection needed.

Safety Features Worth Knowing

Reverse polarity protection, short circuit prevention, over-discharged battery activation, and overcharging timeout. The over-discharge recovery is particularly useful: it restores cells that have self-discharged below the normal rechargeable floor, which happens regularly with vape cells left unused. Browse Battery Chargers and Vape Mods alongside these.

Fire-Retardant Housing and Certifications

The casing is fire-resistant, flame-retardant PC. Nitecore holds RoHS, CE, FCC, and CEC certifications on the New i4 and covers it under Ping An Insurance, one of China's largest insurers. That level of certification is not common on cheaper multi-bay chargers.

Compatible Battery Formats for the Nitecore New i4

Built for vapers running Box Mods or Regulated Mods. Primary vape formats: 18650, 20700, and 21700, including flat-top versions of the latter two that some chargers reject. Beyond vape cells, it handles the full Li-ion format list from 10340 through 26650, plus rechargeable AA, AAA, AAAA, C, and D Ni-MH cells.

What it does not charge: non-rechargeable alkaline cells. Detection is built-in; the charger identifies primary cells and stops before applying current.

About Nitecore

Guangzhou-based manufacturer focused on precision charging and lighting hardware. The Intellicharger range is a standard recommendation among vape users because Nitecore's ACD system handles IMR cell demands more reliably than generic alternatives.

The New i4 upgrades the original with faster output and extended flat-top 20700 and 21700 compatibility. Certified to RoHS, CE, FCC, and CEC.

Stock Up and Save

Running external batteries through a mod is a long-term cost-saving strategy, but only if the charger is reliable. A failing charger damages cells. The Nitecore New i4 removes that risk with proper safety termination, chemistry detection, and a certified housing.

Every order from Pirate Vapes ships the same day before 4 pm in padded packaging. Age-verified checkout, over-18s only on all products across the site.

Conclusion

The Nitecore New i4 is the practical choice for vapers using external cells in advanced mods or Vape Kits. Four slots, ACD-managed output up to 1500mA, automatic chemistry detection, and a full safety stack.

It handles the 18650, 20700, and 21700 formats that most high-drain vape mods require, plus Ni-MH household cells as a bonus. No settings to configure, no chemistry to identify manually. Insert the battery, the charger does the rest. Pick one up at Pirate Vapes.

FAQs

Does the i4 charge 21700 batteries?

Yes. The New i4 accepts flat-top 21700 and 20700 cells alongside the standard 18650 format. The universal spring bays adjust to fit the larger formats without an adapter.

How fast does the i4 charge a single 18650?

At maximum single-slot output of 1500mA, a typical 3000mAh 18650 charges from flat in approximately two hours. Load all four slots and the current drops to 375mA per bay.

Can the i4 charge AA and AAA batteries?

Yes. The i4 handles rechargeable Ni-MH and NiCd cells including AA, AAA, AAAA, C, and D sizes. It will not charge standard alkaline batteries and detects non-rechargeable cells automatically.

What happens if I insert a battery backwards?

Reverse polarity protection stops the charge immediately. No damage to the charger or the cell. The i4 also includes short-circuit prevention as a separate failsafe.

Does it stop automatically when batteries are full?

Yes. The charger terminates automatically on completion using the appropriate method for the chemistry detected. Overcharging timeout provides a secondary failsafe if the primary termination signal does not fire cleanly.