Review of Joyroom D-M219 Plus

Another verbank fell into the hands. Today is review Joyroom D-M219Plus. The bank is simple, without protocols for fast charging, but capacious and supports low-current. There is a margin of power, and the manufacturer indicated the characteristics without any marketing tricks.

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To start the characteristics, and later the debriefing.

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Brand: Joyroom
Model: D-M219Plus
Li-Po battery capacity: 20,000 mAh
Effective battery capacity: 12,400 mAh
Micro / type C input: 5 V 2 A
2 * USB output: 5 V 2 A
Material: PC + ABS
Dimensions: 140 * 68 * 28.5mm
Weight: 405 grams The

Commercial packaging of the bank is simple but attractive. The main characteristics are indicated, there is a transparent insert so that you can see the color of the case — white or black. For sale through retail chains there is a loop for placement on stands. In addition to the cardboard box, there is a plastic bumper, and the delivery kit consists of the battery itself, a short USB-microUSB cord and instructions. In my case, the case of the bank is white. So that the battery does not slip in the hand, knurling in the form of a pattern is applied to the upper part of the case. On the front side there is a nameplate indicating the capacity and there is also an LED indicator of the battery charge level. The power button is traditionally located on the side. There are four ports in total: microUSB and Type-C only work on input, USB-A output.

The edges of the case are rounded, the brand name is indicated on its other side. Specifications are shown on the underside of the chassis. The power bank is weighty, but the dimensions are quite convenient, it rests confidently in the hand and the bank arrived almost fully charged — all four indication LEDs were lit. The indication works like this: up to 1% of the charge — the lower LED blinks. If the charge level is within 1–25%, the first LED lights up. 26–50% — two LEDs are lit, 51–75% — three and from 76 to 100% — all four LEDs are lit, as in my case. For the order of measurement of dimensions and weighing. My scales showed a slight mass deviation — 394 grams versus 405 claimed, which is not significant. At idle, the voltage at the output ports is slightly higher than five volts.

Any of the ports is able to support the charging of gadgets with low current consumption, i.e. fitness bracelets, smart watches will be able to charge without problems.
The tester consumes only 10 milliamps, but the ports are not disconnected. The tester is not rich in charging protocols. So one port is trained only for the BC1.2 protocol of 1.5 Amperes, and the second Apple protocol 5V 2.1 Amperes. However, despite this, each port stays up to 2.7 Amperes of load. Of course, the whole jar cannot be drained with such a load current, after about forty minutes the electronics begin to reduce the current to 2.5 Amperes without a voltage drop below five volts due to the heating of the components. But we were promised only 2 Amperes for at least one port, at least two at once, and then 2.7.

The same load at 2.7 Amperes the Verbank is able to hold when loading two ports simultaneously. Then drawdowns already begin. We swap testers — the behavior of the bank is the same. Just in case, I checked the Type-C port for the ability to work on the output (I suddenly made a mistake), but the port works only for input, only to charge the bank itself — the tester does not turn on, there is no voltage. Through the microUSB port, the battery is charged with a maximum current of 1.5 Amperes, and almost 18 thousand mAh has poured into a fully discharged battery. Charging lasted almost 12 hours. The 2 amperes indicated in the specifications for the input are nevertheless indicated correctly — this indicator applies to the charger, these are the requirements for it.

I discharged the power bank with a current of 2 Amperes and in 6 hours 17 minutes 13250 mAh merged, which is even more than the declared effective capacity of 12400 mAh. The charging current through the Type-C port rises to 1.8 Amperes, the process takes 10 hours 18 minutes, and the same 18,000 mAh flows in. At the same 2 Amperes, the load merged 13060, which is slightly less than in the first case, but still more than the declared 12400 mAh, which means the effective capacity is indicated honestly.

The manufacturer promised us through charging, and it is here. The voltage at the output ports is below 5 volts, which is expected and traditional for the vast majority of banks. Under a load of 2 amperes, the voltage drops to 4.4 volts, but the bank takes no more than 1.8 amperes at the input, i.e. voltage reduction is due to the normal operation of the converter. There is a pass-through charging mode; a simply charged phone will charge more slowly than usual.

As a result, you can pour a bunch of cons on the bank for the lack of fast protocols, for parallel ports, for not the highest load capacities, for the inability to work as UPS, but all this was not stated.
But honestly the specified 2 Amperes for at least one port, at least two are immediately blocked with interest, there is a margin of power. There is end-to-end charging and there is low-voltage charging, which, along with a large capacity and not a high price, I will attribute to the pluses.

That’s all, happy shopping!

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