GT POWER X2mini User manual

• Charge Current: MAX.10A*2
• Charge Power: DC 200W / AC 100W
Thanks for purchasing GT Power X2mini Charger. This is a charger with built in
microprocessor and newest program. This charger can support 2 channels
charging, can charge 2 dierent battery types at the same time. This charger
with fashion design, easy to operate. Please read the manual completely and
carefully before using.
Include Intelligent power allocation and average power allocation.
Single channel AC Power: Max 100W in intelligent allocation mode
w
a
t
t
200
p
o
w
e
r
2-Channels Intelligent Charger
For LiPo/LiFe/LiHv/Lilon/NiMH/NiCd/Pb batteries

12
Contents
1.Specications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.The exterior appearance of the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Warnings and safety notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. Program ow chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5. Charging current setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6. Power Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
7. Lithium Battery (LiLo/LiPo/LiFe/LiHv) Mode Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . 8
8. Operation process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
9. Cell meter test program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
10. Data save program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
11. Load data setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
12. User setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
13. Warning and error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
14. Warranty and service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

13
1. Specications
Input Voltage AC.100-240V
DC.19-26V
Charge Current 0.1-10.0A*2
Charge Power AC.Max.100W
DC.Max.100W*2
Balance Current 500mA
Balance Precision ±0.01V
Charging Capability LiPo/LiFe/LiIon/LiHv: 1-4cells
NiMH/NiCd: 1-8cells
Pb: 2-14V
Weight 554g
Dimensions 137.5*141.5*55.5mm

14
2.The exterior appearance of the unit
Air vent
The first channel
indicate light
The second channel
indicate light
Screen
DEC key
INC key
ENTER/START key
STOP key
CHANNEL/SELECT key
Balance port
Battery connection interface
Direct current input:19-26V AC input:100-240V

15
3. Warnings and safety notes
· Never leave the charger unsupervised when it is connected to power.If any malfunction
happens, terminate the program immediately and refer to the operation manual for the
right operation.
· Keep the unit away from dust, damp, rain, heat, direct sunshine and vibration. Do not
drop it.
· The circuit of the unit is designed to be powered by 100-240V AC or 19-26V DC.
voltage level: 1.2V/cell
allowable fast charge current: 1C~2C depends on the performance of cell
discharge voltage cut o level: 0.85V/cell(NiCd), 1.0V/cell(NiMH)
voltage level: 3.6V/cell
max.charge voltage: 4.1V/cell
allowable fast charge current: 1C or less
min.discharge voltage cut o level: 2.5V/cell or higher
voltage level: 3.7V/cell
max.charge voltage: 4.2V/cell
allowable fast charge current: 1C or less
discharge voltage cut o level: 3.0V/cell or higher
voltage level: 3.3V/cell
max.charge voltage: 3.6V/cell
allowable fast charge current: 4C or less(e.g. A123M1)
discharge voltage cut o level: 2.0V/cell or higher
voltage level: 3.8V/cell
max.charge voltage: 4.35V/cell
allowable fast charge current: 1C or less
min.discharge voltage cut o level: 3.0V/cell or higher
voltage level: 2.0V/cell(Lead-acid)
max.charge voltage: 2.46V/cell
allowable fast charge current: 0.4C or less
discharge voltage cut o level: 1.50V/cell or higher
NiCd/
NiMH
LiIon
LiPo
LiFe
LiHV
Pb
(Lead-
acid)

16
· The charger and the battery to be charged should be set up on a heat-resistant,
non-flammable and non-conductive surface.
· Please ensure that the fan and vents of the charger are not blocked by the surface that it
is placed on.
· Make sure you understand the correct settings to use for the battery to be charged or
discharged. Use of incorrect settings may cause severe damage to the battery, including
possible fire or explosion.
· To avoid short circuit between the charge leads, always ensure the leads are connected
to the charger first and only then plugged into the battery. Always make sure that no
batteries are connected to leads before disconnecting them from the charger.
· You have to pay attention to verify the capacity and the voltage of the Lithium battery
pack. It may be composed of parallel and series connection mixed. In parallel link the
capacity of the battery pack is multiplied by the number of cells but the voltage remains
the same. That kind of voltage imbalance may cause a fire or explosion during charge
process. We recommend you compose the Lithium battery pack in series only.
The above warnings and safety note are particularly important, please follow the
instructions for a maximum safety, any improper operation may cause severe damage to
charger and batteries, including possible re or explosion.

17
4. Program ow chart
Start
Enter
Start
Enter
INC
DEC
Start
Enter
INC
DEC
Start
Enter
INC
DEC
Battery Type
Select LiPo - >
LiPo BALANCE
10.0A 7.4V(2S)
LiPo FAST
10.0A 7.4V(2S)
LiIo BALANCE
10.0A 7.4V(2S)
LiIo FAST
10.0A 7.4V(2S)
LiHV BALANCE
10.0A 7.4V(2S)
LiHV FAST
10.0A 7.4V(2S)
Start
Enter
INC
DEC
Start
Enter
Start
Enter
Start
Enter
Start
Enter
Start
Enter
Start
Enter
Start
Enter
Battery Type
Select LiIo - >
Battery Type
Select LiHV - >
Battery Type
Select LiFe - >
INC
DEC
INC
DEC
INC
DEC
INC
DEC
INC
DEC
INC
DEC
INC
DEC
INC
DEC
INC
DEC
INC
DEC
INC
DEC
INC
DEC
INC
DEC
INC
DEC
INC
DEC
INC
DEC
INC
DEC
INC
DEC
INC
DEC
LiFe BALANCE
10.0A 7.4V(2S)
LiFe FAST
10.0A 7.4V(2S)
Battery Type
Select Pb - >
Pb CHARGE
10.0A 4V(2P)
Battery Type
Select NiMH - >
NiMH CHARGE
10.0A 2.4V(2S)
Battery Type
Select NiCd - >
Program Select
Load Date
Program Select
Save Date
Load[0] FAST
LiPo 2S 5.0A
Save[0] FAST
LiPo 2S 5.0A
Start
Enter
Load Memory[0]?
NO YES
Start
Enter
LiPo FAST
5.0A 7.4V(2S)
Start
Enter
Cover Previous
Memory[0]?NO YES
Start
Enter
NiCd CHARGE
10.0A 2.4V(2S)
Program Select
Save Date
User Program
Cell Meter
1:4.20V 2:4.19V
3:4.20V 4:4.20V
MAIN:16.79V
H:4.20V L:4.19V
User Program
Settings
NiMH Sensitivity
D.Peak 6mv/Cell
NiCd Sensitivity
D.Peak 6mv/Cell
Temp Cut-off
ON 65°C 149°F
INC
DEC
Safety Timer
ON 300min
Capacity Cut-Off
ON 10000mAh
Key Beep ON
Buzzer ON
Capacity Cut-Off
ON 10000mAh
Input Power Low
Cut-Off 18.0V
Load Factory Set
Enter
Product Version
V1.1.1
Capacity Cut-Off
ON 10000mAh
Firmware Upgrade
- >
Power Mode
Dynamic Mode

18
5. Charging current setting
You have to know the battery allowable maximum charge current before charging.Charge
current exceeds the allowable maximum charge current may cause damage to battery and
it is possible to lead a fire and explosion of battery when charging.
We usually use C value to mark battery charging/discharging capability.The battery
allowable maximum charging current is calculated by multiply C value by battery capacity .
For example, if battery is 1000mAh, 5C, then the allowable maximum charging current is
1000*5=5000mA, that is the battery maximum allowable charging current is 5A.
To Lithium batteries, if you can’t confirm battery’s C value, for your safety, please set
charging current no more than 1C.
The relationship between C value and charging time is, charging time≥60minites/C value,
for example, charging with 1C, charging finish time need 60-70 minutes. This time may be
extended due to different battery performance.
6. Power Allocation
Power allocation is only effective under AC power supply, have intelligent allocation and
average allocation two modes.
Power Intelligent allocation is allocate power by channels, it can improve charger’s working
efficiency ,shorten charging time, with intelligent allocation design to meet different user’s
needs.
Single channel working power can reach to 100W under AC input mode.Charger is charged
by full power per single channel according to the priority of charging start time.That is
when 2 channels all connected with battery and start charging process,charger will
allocate full power to the battery which charging first,allocate the other channels with
small power. When the first battery fully charged, then one by one according to the charge
time priority to full power charge each channel battery till every single channel battery
fully charged.
Power average allocation is to allocate the power of charger equally to each channel, each
channel’s power is the same, minimum 50W, maximum 100W. This design is good for record
charging time and compare battery performance.

19
7. Lithium Battery (LiLo/LiPo/LiFe/LiHv) Mode Instruction
8. Operation process
Charging Lithium battery at balance mode
This is for balancing the voltages of Lithium batteries of the battery pack to be charged.
Inner system will monitor each cell’s voltage and restraint each cell’s current to fulfill
balance charging. You need to connect the battery to the charger’s output plug as well as
the balance port when charging.
“FAST” charging Lithium battery
The charging current is getting smaller as the charging process goes to the end . To finish
charging process earlier, this program eliminated certain CV process and balancing
process. The fact is when the charging current goes down to 1/5 of the initial value can
finish charging process. Under this situation the charging capacity may smaller than the
charging capacity under normal charging, but reduced the charging time.
This charger has two channels function, each channel operation process is the same, below
use the first channel to illustrate the operation process.
When channel led light constantly lights, you can switch channel and system setting
program by CHANNEL/SELECT key.
After choose the right channel, press ENTER key and through press DEC or INC key to
choose battery type, including LiPo、LiFe、Liion、LiHV、NiMH、NiCD、PB batteries. Or you
can start program setting, voltage test, data storage.
This LiHV mode can only support 4.35V Lithium battery, forbidden to use other batteries
to charge under this mode. Charge LiPo/LiIon/LiFe or other batteries voltage under
4.20V in LiHV mode may cause possible re or explosion.
Under DC input mode, each channel can charge under maximum power 100W, improve
charging efficiency and shorten charging time.
Warning

1:
Press STOP key Back to the last interface, then press ENTER key to the next menu.
LiPo BALANCE
9.9A 14.8V(4S)
Choose the right program, press ENTER key to choose
balance charging mode or fast charging mode enter into
next program, back press STOP key.
Press STOP key back to last menu, then press ENTER key to
start program.
Press INC key to show each single cell battery.
Press DEC key to show charge power, battery capacity and
charger’s inner temperature..
Press STOP key and confirm exit to stop current program and
back to last menu.
Shortly press ENTER key to current setting. Through press
INC/DEC key to set current, range from 0.1-10A, shortly press
ENTER key again, then through press INC/DEC key to set
battery counts:3.7V(1S)-14.8V(4S). After finished, long press
ENTER key to charging program.
4S 0.4A 16.6V
CHG 001:01 00007
1:4.14V 2:4.15V
3:4.14V 4:4.14V
INC
DEC

21
9. Cell meter test program
10. Data save program
User Program
Cell Meter
This charger with built-in high-bit micro-processor, can be
used as a cell meter.It can show the voltage of each cells, the
total battery pack voltage and the highest/lowest voltage.
Choose the cell meter program interface, press STAR T to
enter.
press START to show 1-4 cells voltage. Press STOP key back
to main menu.
Press STAR T key to show the highest/lowest voltage of the
single cell and the total voltage of the battery pack.
It has a data storage and load program, can store up to 10
battery data by number that represent the individual
specification of the batteries you are using. They can be
called back for charging/discharging process without
setting the program again.
press ENTER key to save data.
Set the battery parameters in the battery type program you
need to save. Use 3s lipo battery as example, you need
choose Lipo charge program first, then set lipo battery
parameters, after parameter set finished, exit this program
and select data saving program. Select the shortcut number
that you want to save for the next time use, then press ENTER
key enter into the data saving interface.
MAIN:16.79V
H:4.20V L:4.19V
1:4.20V 2:4.19V
3:4.20V 4:4.20V
Save[1] BALANCE
LiPo 4S 2.2A
Cover Previous
Memory[1]? NO YES
PROGAM SELECT
SAVE DATA
Start
Enter
Start
Enter
Start
Enter
Start
Enter

22
11. Load data setting
12. User setting
When you used it for the first time, it will operate according to the preset value. You can
modify parameters in the Settings column for the second time use.
This program calls back the data that was stored at 'Save
Data' program. To load the data, press Start/Enter key once
to blink the data number field and select the number using
INC or DEC key then press Start/Enter key for more than 3
seconds.
As indicated, choose [01] NIMH, will show corresponded
value 14.4V3000MA
The automatic charging trigger voltage program is a kind of
program that can automatically turn off the charging current
during charging. The working principle is that after the
battery voltage increased to the maximum value and start to
decreasing then the charge current will turn off and finish
the charge. If the trigger voltage set too high, there is a
possible danger of over- charging .If the trigger voltage set
too low, may stopcharging prematurely. Please refer to the
specification of the battery (NiCd default voltage:12mv,
NiMH default voltage:7mv).
Automatic charging trigger voltage program
Temp cut-off program is used to protect charger being
damaged. Will trigger stop charge/discharge when in
extreme or high temperature environment. Temperature cut
off value can set from 60° to 80°.
Temp cut-o program
INC
DEC
INC
DEC
PROGAM SELECT
Load date
LOAD [1] NiMH
14.4V 3000mAh
Load...
Start
Enter
Start
Enter
NiMH Sensitivity
D.Peak Default
NiCd Sensitivity
D.Peak Default
INC
DEC
Temp Cut-off
ON 65°C 149°F

INC
DEC
23
If you turn on safety timer, safety timer will start timing
when charging.If system fault or system can’t identify
battery capacity already full, this safety time set can stop
battery being over charged. The safety time should not
shorter than the time battery fully charged, usually from
10min to 720min.
Safety time setting
Capacity cut-off program set the maximum charging
capacity. If safety timer stopped work or system can’t detect
the peak voltage, this program will stop charging/ discharg-
ing automatically if you’ve set the maximum charging
capacity, range from 10mAh to 50000mAh. .
Capacity cut-o program
Sound setting
DC input power is 19-26V, the program set the lowest cut-off
input voltage value is 19-26V. If the voltage lower than the
setting voltage level, procedure will be forced to end to
protect input power.
Input Power low cut-o
Resume to the default setting
Load factory set
This is used to check product version
Product version
INC
DEC
Safety Timer
ON 300min
INC
DEC
Capacity Cut-Off
ON 10000mAh
INC
DEC
INC
DEC
Beep sound on/off; Buzzer sound on/off.
Input Power Low
Cut-Off 18.0V
INC
DEC
Load Factory Set
Enter
Key Beep ON
Buzzer ON
Product Version
V1.1.1

INC
DEC
24
13. Warning and error messages
Press ENTER key to do firmware upgrade
Firmware upgrade
Under AC power supply, you can choose the power
allocation mode, intelligent allocation or average
allocation.
First priority: intelligent allocation.
Dynamic Mode: average allocation.
Power Allocation
It will show the Error information with a beep sound when operation error.
1. {" BATTERY CONNECT ERROR "}
Interruption of battery and output end, or
the charger wire has not been connected
well when charging or discharging
2.{" INPUT VOLTAGE FLUCTUATION "}
Input voltage fluctuation range over 1V,
please check input power to ensure input
voltage fluctuation range not exceeds the
normal allowable range.
3.{"BATTERY VOL ERR CELL CONNECT"}
unit battery voltage error, please check the
battery voltage one by one.
4.{" TEMP OVER ERR "}
The internal temperature of the unit goes
too high, you need to cooling down the unit
5.{" SHORT CIRCUIT ERROR"}
Short circuit, you need to check charge
circuit and related equipment.
6.{"CAP OUT "}
Over the charger’s capacity protection set
value, you need to check and reset the
capacity protection value.
7.{"INPUT VOLTAGE ERROR"}
Input voltage error, you need to check the
input power to make sure the input power
correct.
8.{"REVERSE PLOARITY"}
Battery output polarity connection wrong,
you need to reverse connected battery
polarity.
9.{"SAFETY TIME OUT!"}
You need to reset the safety charge time.
Firmware Upgrade
- >
Power Mode
Dynamic Mode

25
14. Warranty and service
We warrant this product for a period of one year(12 months) from the date of purchase. The
guarantee applies only to such material or operational defects, which are present at the
time of purchasing the product. During that period, we will replace without service charge
for any product deemed defective due to those causes. You will be required to present
proof of purchase(invoice or receipt). This warranty does not cover the damage due to
wear, overloading, incompetent handling or using of incorrect accessories.
CONFORMITY DECLARATION
G.T.POWER X2mini satisfies all relevant and mandatory CE directives and FCC Part 15 Subpart B.
The product has been tested to meet the following technical standards:
CE-LVD
CE-EMC
FCC-VOC
EN60335-2-29
Test Standards Title Result
EN 60335-1
EN55014-1
EN55014-2
EN61000-3-2
EN61000-3-3
FCC Part 15B
Conform
Conform
Conform
Conform
Conform
Conform
Conform
Household and similar electrical appliances _. Safety _.
Part 2-29: Particular requirements for battery chargers.
Household and similar electrical appliances - Safety -
Part 1: General requirements
Electromagnetic compatibility _Requirements for household
appliances, electric tools and similar apparatus _Part 1:
Emission
Electromagnetic compatibility _Requirements for household
appliances, electric tools and similar apparatus _Part 2:
Immunity Product Family Standard
Electromagnetic compatibility (EMC) _
Part 3-2: _Limits for harmonic current emissions (equipment input
current up to and incelding 16 A per phase)
Electromagnetic compatibility (EMC) - Part 3-3: Limitation of
voltage supply systems for equipment with rated current ≤ 16A.
Title 47 Telecommunication
PART 15 - RADIO FREQUENCY DEVICES Subpart B -
Unintentional Radiators