Nitecore D4 charger from above, with its LCD and four empty bays

Nitecore D4 charger from the side, showing its finned body

Back of the Nitecore D4: a DC input, an AC socket and the power cord

Nitecore Digicharger D4 Universal Smart Charger

Name: Vape Society Supply
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Brand: Nitecore

Original price was: $39.99.Current price is: $30.99. Sold out

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The Nitecore Digicharger D4 Universal Smart Charger is a four-bay smart charger with an LCD readout for Li-ion, IMR, LiFePO4, Ni-MH and Ni-Cd batteries, including 18650s and 26650s. It charges at up to 750mA per battery.

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Description

Nitecore Digicharger D4 Universal Smart Charger Review

The Nitecore Digicharger D4 Universal Smart Charger is a four-bay smart charger with an LCD readout of each battery’s voltage, charging current and charging time. It charges Li-ion, IMR, LiFePO4, Ni-MH and Ni-Cd batteries, including 18650s and 26650s, at up to 750mA, and runs on AC or 12V DC. See more from Nitecore or browse all battery chargers.

Digicharger D4 Highlights

Four Bays

Each bay monitors and charges its battery on its own. With one or two batteries in, each charges at 750mA; with three or four, 375mA each.

LCD Readout

Five bars show each battery’s charge level. MODE switches the readout between voltage, charging current and elapsed time, and SLOT picks the bay.

Automatic Charging

Each bay checks its battery, picks the voltage and charge mode (CC, CV or dV/dt) and stops when it’s full. LiFePO4 is the exception: you select it by hand.

Built-In Protection

The D4 checks each battery at low current for 6 seconds before charging. Nitecore lists over-charge prevention, temperature monitoring, reverse polarity protection and a 20-hour cutoff for each bay.

Digicharger D4 Specs

Charging

Bays: 4
Batteries: Li-ion, IMR, LiFePO4, Ni-MH and Ni-Cd
Charge voltage: 4.2V, 3.7V or 1.48V
Charge current: up to 750mA (see the table)
Charging modes: CC, CV and dV/dt, chosen automatically (LiFePO4 by hand)

Battery Sizes

Li-ion, IMR, LiFePO4: 10440, 14500, 16340 (RCR123), 17500, 17670, 18350, 18490, 18650, 22650 and 26650
Ni-MH, Ni-Cd: AA, AAA, AAAA and C

D4 Charger

Input: AC 100–240V, 50/60Hz, or DC 12V 1A
Display: LCD readout of charge bars, voltage, current and charging time
Buttons: MODE and SLOT, on the side
Protection: over-charge prevention, temperature monitoring, reverse polarity and a 20-hour cutoff
Size: 143 × 99 × 36mm
Weight: 239g without batteries or cord
Body: fire-retardant ABS

Digicharger D4 Charge Current

Nitecore’s manual gives these currents:

Batteries charging	Current per battery
1 or 2	750mA
3 or 4	375mA

LOW mode lowers the current for batteries under 750mAh, such as 16340s and AAAs.

Batteries

Charge only rechargeable Li-ion, IMR, LiFePO4, Ni-MH or Ni-Cd batteries, and don’t leave batteries charging unattended.

How to Use the Digicharger D4

Plug it in: connect the AC cord from the box, or a 12V DC car adapter (sold separately).
Load the batteries: match each battery’s ends to the + and − marks. The D4 checks it for 6 seconds, then starts charging.
Set LiFePO4 if needed: for a LiFePO4 battery, hold MODE for more than 2 seconds right after the check, until LiFePO4 shows.
Read the screen: press SLOT to pick a bay and MODE to switch between voltage, current and time. Chg.Finish shows when the battery is full.

Who the Digicharger D4 Is For

The Nitecore D4 suits vapers who charge several 18650 batteries at once and want to see each one’s voltage and charging time. It doesn’t take 21700s, and with three or four batteries in, each charges at 375mA. For 21700s and up to 1.5A, see the New i4.

Good to know: It isn’t listed for 20700 or 21700 batteries, and Nitecore doesn’t recommend the D4 for over-discharged (zero volt) unprotected Li-ion batteries.

What’s in the Digicharger D4 Box

Nitecore D4 charger
AC power cord
User manual

FAQ

Nitecore D4 FAQ

Does it charge 21700 batteries?

No. Nitecore doesn’t list 20700 or 21700 batteries for the D4. For flat-top 21700s, the New i4 has four bays too.

How fast does it charge?

Each battery charges at 750mA with one or two in, and at 375mA with three or four. LOW mode lowers the current for batteries under 750mAh.

What does the screen show?

Five bars show each battery’s charge level. Press MODE to switch the readout between voltage, charging current and elapsed time, and SLOT to pick the bay.

Can it charge LiFePO4 batteries?

Yes, but you select it by hand: hold MODE for more than 2 seconds right after the battery check. It has no 4.35V setting.

Can I use it in the car?

Yes, with a 12V DC car adapter, which isn’t included. The box has an AC cord for wall outlets.

How is it different from the New i4?

The New i4 charges one battery at up to 1.5A and takes flat-top 21700s, with charge level lights instead of an LCD. The D4 tops out at 750mA and shows voltage, current and time.

Customer Reviews

5.0 Based on 2 Reviews

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04/23/2021

Anonymous

Efficient and does exactly what I need

It does the job, it tells me the charge the battery is at, what voltage, and how long it will take for a full charge. It’s pretty fantastic so far!

03/25/2021