Review of Charger NITECORE Digicharger D2

NITECORE Professional Charger Series

Digicharger D2

Hi everybody! :slight_smile:

Last week I bought myself a new battery charger - NITECORE Digicharger D2. I purchased it from the official distributor for Bulgaria Batteryservice.bg for € 19.50. I like this model because it can be used for many types of batteries and thus eliminating the need to own several chargers. At first glance the charger looks good. The manufacturing quality is high.

There is a list of compatible batteries in the front of the package.

The features of the charger.

• Capable of charging 2 batteries simultaneously
• Each of the two battery slots monitors and charges independently
• Compatible with and identifies Li-ion (26650, 22650, 18650, 1 7670, 18490, 17500, 18350, 16340(RCR123), 14500, 10440), Ni-MH and Ni-Cd (AA, AAA, AAAA, C) rechargeable batteries
• Optimized charging design for IMR batteries
• Integrated LCD panel clearly displays charging parameters and progress
• Two conveniently located side buttons allow easy selection of specific battery types and charging parameters
• Intelligent circuitry detects the battery type and status before entering automatic charge mode (CC, CV, dV/dt)
• Automatically detects battery power status and selects the appropriate voltage and charge mode (with the exception of LiFePO4 batteries which require manual selection)
• Compatible with LiFePO4 batteries
• Compatible with small capacity batteries
• Automatically stops charging when complete
• Features over-charge prevention to protect batteries
• Features temperature monitoring to prevent overheating
• Made from durable ABS (fire retardant / flame resistant)
• Features reverse polarity protection
• Designed for optimal heat dissipation
• Certified by RoHS, CE, FCC and CEC
• Insured worldwide by Ping An Insurance (Group) Company of China, Ltd.

The specifications of the D2.

Optionally, you can buy a car charger adapter, which is not included in the kit.

There are a scratch off sticker with 16 digit validation code and QR code on the sticker to the top of the box.

The code is registering here .

I received the following letter on my email:


Your application for warranty service has been approved.

Thank you for registering for Nitecore authentic product warranty service. The information you submitted has been verified by Nitecore. You can enjoy our warranty service from now on. Please keep this email properly, and remember your registration email address, as they are essential to your possible warranty application.
The information for this warranty service registration includes:
Validation code: xxxxxxxxxxxxxxxx
Email address: xxxxxxxxxxxxx.xx
Application time: Aug. 20, 2016 9:07
Product model: D2
Thank you for using Nitecore products. Enjoy it!


The kit includes the charger, a power cord, warranty card and instruction manual also instructions of Bulgarian and warranty card from the dealer.

The display with white illumination. Charging slots charges and monitors batteries independently.

There are “MODE” and “SLOT buttons on the left side of the housing.
To view the charging progress of a different charging slot press the side “SLOT” button to select a desired slot.
To entering in Nocturnal Charging Mode simply press and hold the side “SLOT” button for more than 1 second in any state until the LCD backlight turns off.
Pressing the side “MODE” button will cycle between the charging parameters.

The display is large. All the information on it is clearly visible.

Measurement of the battery voltage. The maximum voltage for Ni-MH/Ni-Cd batteries is 1.48 V, for LiFePO4 batteries is 3.7 V, for Li-ion batteies is 4.2 V.

Measuring the charging current. When one or two batteries are charged in D2, each charging slot will receive a maximum output current of 0.5A except the Low Mode.

Elapsed time.

AC 100-240V and DC 12V power input sockets.

The specifications and the manufacturer are written on the label.

Each bay slides at minimum 30 mm.

Each bay slides at maximum 70 mm.

The maximum power consumption from the mains in Stand-By Мode and Eco Mode mode is 0.3W.

The maximum power consumption from the mains in Chargе Мode varies, but remains less than 10 watts.

The charger automatically detects Li-ion, Ni-MH and Ni-Cd batteries.
To charge LiFePO4 batteries, simply press and hold the side “MODE” button for more than 2 seconds.

Charging Small Capacity Batteries - simply press the side “SLOT” button to select a desired battery slot and then press and hold the side “MODE” button for more than 1 second until “LOW” is displayed on the LCD. The charge current will be limited to a maximum of 300 мА.

There is a “Chg. Finish” text on the display which is used on finished channels. When all channels with batteries are finished the display will show “Chg. Finish ALL”.

Until now for charging my batteries I used two different chargers - one for Li-ion and another for Ni-MH/Ni-Cd. After much experimentation with the Nitecore charger I found that D2 is doing much better with charging different types batteries. An advantage is that the charging current can be reduced for batteries with less capacity. It would be better if the charger was able to charge with a current of 1 Ampere if only one slot is included battery. The display shows in details all the necessary information. The charger has automatic detection of the batteries(with the exception of LiFePO4). The charger is protected from backward battery installation, temperature protection and overtime prevention. This is a really smart universal battery charger.

After charging the Li-ion battery with the new charger I found that my modified Flashlight illuminates stronger. The Peak Beam Intensity measured with a Luxmeter is 14 400 cd - 20% more than charging with the old charger. The battery is stronger - provides higher current and therefore LED glows more brightly. It is awesome.
I am very happy with purchasing of the Digicharger D2. :smiley:

HI

I'm new in using battery charger.

Using the Nitecore D2 Professional series, ND2 detect my Samsung 30q unprotected battery at 3.12v and 500 mah( what does it mean?), the charging mode is CV and low? What does it mean?.

What is the normal time to be able the battery goes full charge and what is the ideal volts and mah after full charge? does the ND2 will automatically stop when full charge?.

Thanks

Those are informational display by Nitecore’s charger. (I think a few other chargers also may indicate that).
Not user-selectable, just informational.

Can get some more information about lithium-ion battery charging here:

(I’m not an expert, but these are based on my various readings and experiences observing different chargers charging batteries at many different times)

Li-Ion batteries are generally considered (or “defined” as) fully-charged when they reach 4.20v (+/- 0.05v tolerance).

Usually there is a CC (‘constant current’) phase where a constant amount of power is being “poured” into the battery.
But when the battery is nearing fully capacity, there is a CV (‘constant voltage’) phase, meaning the battery is charged at a constant 4.20v, but with decreasing amount of current as the battery gets full.

I’m not sure why your battery at empty (in general, an unloaded battery is empty when it’s somewhere below 3.3-3.4volts. Although down to 2.50v may still be acceptable as long as the battery doesn’t stay at that “empty” stage for extended period of time) — 3.12v is basically “empty”, and the charger is charging at “CV” phase instead of supposedly “CC” phase.

Checking Nitecore D2 manual online, I notice it says “Low” mode is for low charging current — possibly activated because the battery is drained to a low voltage (empty) state — 3.12v unloaded voltage, would be considered quite low. Perhaps check again, when the voltage has increased a bit, so the charger can charge at the standard higher current?