Charger LiitoKala Lii-400

DSC_6380

DSC_6381 DSC_6382

LiitoKala got known for a analyzing charger, they have since made many other chargers. This is a charger that can charge both LiIon and NiMh, it can also work as a power bank.

DSC_6357

It arrived in a brown cardboard box without any printing on it.

DSC_6379

In the box was the charger, a power supply, a car adapter and a instruction sheet.

DSC_6384

The charger has 12V DC input and a full size usb output for the power bank function.

DSC_6383

The user interface is a LCD display with voltage display and current selection.
A single button is used to select current, it has to be pressed for about 1 second to change current.

DSC_6739

The battery icon is animated while charging and steady when finished.

DSC_6385

Specifications are printed on the bottom of the charger (That is fairly common).

DSC_6386 DSC_6387

The slots uses the classical slider construction and it works fine.

The slots can work from 33 mm to 70mm. This means that very long protected 18650/26650 batteries will not fit in the slots.

supportedBatteryTypes

supportedBatterySizes DSC_6417 DSC_6418 DSC_6419

DSC_6420 DSC_6421 DSC_6422 DSC_6423 DSC_6424 DSC_6425 DSC_6426

The charger can handle 70 mm long batteries including flat top cells.



Measurements

Charge LiIon

LiitoKala%20Lii-400%201000mA%20%28PA18650-31%29%20%231

This is a 1A CC/CV charge curve with a termination current of about 100mA, it looks good.

LiitoKala%20Lii-400%201000mA%20%28PA18650-31%29%20%232
LiitoKala%20Lii-400%201000mA%20%28PA18650-31%29%20%233
LiitoKala%20Lii-400%201000mA%20%28PA18650-31%29%20%234

The other 3 slots looks just as good.

LiitoKala%20Lii-400%201000mA%20%28SA18650-26%29%20%231
LiitoKala%20Lii-400%201000mA%20%28PA18650-34%29%20%231

The different capacities also looks fine.

LiitoKala%20Lii-400%201000mA%20%28BE18650-26%29%20%231

Same with the old cell.

LiitoKala%20Lii-400%20300mA%20%28PA18650-31%29%20%231

The lowest setting on the charger is 300mA, but the termination current is still about 100mA, this is not perfect (Small cells will not be completely filled).

LiitoKala%20Lii-400%20500mA%20%28AW18350-IMR%29%20%231
LiitoKala%20Lii-400%20500mA%20%28KP14500-08%29%20%231

No problem with the smaller cells, except the 100mA termination current.

LiitoKala%20Lii-400%201000mA%20%284xPA18650-31%29

LiitoKala%20Lii-400%201000mA%2012V%20%284xPA18650-31%29

Charging 4 cells at 1A require about 1.8 from 12V (The supplied main apdater is 2A).

Temp3641

M1: 43,4C, M2: 45,1C, M3: 44,3C, M4: 42,1C, M5: 49,4C, M6: 44,8C, HS1: 51,4C
The charger warms up when charging four cells, but not too much.

PoweronLiIon

The charger need some time to start.

CurrentChangeLiIon

Holding the button down will change current one step is starts at 0.5A and goes up, from 1A it jumps to 0.3A.
This means 0.3A is the last current in the sequence (It is possible to select current before putting batteries in the charger).



Charge NiMH

LiitoKala%20Lii-400%201000mA%20%28eneloop%29%20%231

NiMH batteries uses a voltage termination, but without top-off charge, i.e. batteries will not be completely filled.

LiitoKala%20Lii-400%201000mA%20%28eneloop%29%20%232
LiitoKala%20Lii-400%201000mA%20%28eneloop%29%20%233
LiitoKala%20Lii-400%201000mA%20%28eneloop%29%20%234

All the channels looks the same.

LiitoKala%20Lii-400%201000mA%20%28eneloopXX%29%20%231
LiitoKala%20Lii-400%201000mA%20%28eneloopPro%29%20%231
LiitoKala%20Lii-400%201000mA%20%28powerex%29%20%231

It looks like the charger can also do -dv/dt, here two of the high capacity cells are terminated on that.
The voltage termination must also be rather smart, because it did charge the (old) XX cell at a fairly high voltage.

LiitoKala%20Lii-400%20300mA%20%28eneloop%29%20%231

There is no problem terminating at 300mA.

LiitoKala%20Lii-400%20500mA%20%28eneloopAAA%29%20%231

When it can handle a AA cell at 300mA, it can also handle a AAA cell at 500mA without any problems.

LiitoKala%20Lii-400%201000mA%20full%20%28eneloop%29%20%231

A full cell is detected fairly fast, due to the voltage termination.

LiitoKala%20Lii-400%201000mA%20%284xeneloop%29

There is no problem with four cells at a time.

LiitoKala%20Lii-400%201000mA%2012V%20%284xeneloop%29

And the charger uses about 1A from 12V

Temp3629

M1: 44,1C, M2: 46,5C, M3: 46,6C, M4: 44,3C, M5: 43,3C, HS1: 59,8C

PoweronNiMH

NiMH needs the same time to start as LiIon. The charger is turning current off to check voltage.

CurrentChangeNiMH

Current change works the same way.



Usb output


LiitoKala%20Lii-400%20%28PA18650-31%29%20%231%20load%20sweep

Usb output can deliver about 1A with one cell, before the voltage starts dropping.

LiitoKala%20Lii-400%20%284xPA18650-31%29%20load%20sweep

With four cells the current is slightly higher.

LiitoKala%20Lii-400%20usb%20out%2010ohm%20%28PA18650-31%29%20%231

At 0.5A load the output looks very good with one cell

LiitoKala%20Lii-400%20usb%20out%2010ohm%20%284xPA18650-31%29

And also with four cells.

LiitoKala%20Lii-400%20usb%20out%205ohm%20%28PA18650-31%29%20%231

But at 1A there is serious problems with one cell, the usb output cannot maintain voltage when the cell voltage drops.

LiitoKala%20Lii-400%20usb%20out%205ohm%20%284xPA18650-31%29

The problem is also present with 4 cells, but to a lesser degree.

10ohm

The noise is 3mV rms and 38mVpp at 0.5A, when the batteries have enough voltage.

5ohm

The noise is 10mV rms and 85mVpp at 1A


Testing the power supply with 2830 volt and 4242 volt between mains and low volt side, did not show any safety problems.



Conclusion

The charger is good at both LiIon and NiMH, but with small LiIon cells and some NiMH cells you will get slightly below maximum capacity (This is fairly common on many different chargers).
The user interface is simple and because the initial current is 0.5A it is safe for most cells.

The usb output is not very impressive, it uses a old coding and cannot deliver the rated current.



Notes

The charger was supplied by Gearbest for review.

Here is an explanation on how I did the above charge curves: How do I test a charger
Read more about how I test USB power supplies/charger