Voltacon EC205 User manual

High-voltage Lithium-iron Phosphate
Battery Module
Version: 1.1
User Manual

Table of Contents
1. Safety Precautions.....................................................................................................................................1
1.1 Before Connecting................................................................................................................................1
1.2 In Use ...................................................................................................................................................1
2. Introduction ................................................................................................................................................2
2.1 Features ...............................................................................................................................................2
2.2 Package Contents ................................................................................................................................3
2.3 Specifications .......................................................................................................................................4
2.4 Product Indicator & Setting...................................................................................................................5
3. INSTALLATION ...........................................................................................................................................7
3.1 Installation Environment .......................................................................................................................7
3.2 Mounting the Modules ..........................................................................................................................8
3.3 Wiring Configuration ...........................................................................................................................10
4. Start-Up/Shut-Off the Battery Module ....................................................................................................16
4.1 Start up the battery module ................................................................................................................16
4.2 Shut-off the battery module ................................................................................................................16
5. Trouble Shooting......................................................................................................................................16

1
Thank you for purchasing high-voltage lithium battery modules. Please read this manual before
installations and operations. Follow the instruction carefully during the installation process.
1. Safety Precautions
Reminder
1) It is very important and necessary to read the user manual carefully before installing or using the
battery. Failure to do so or to follow any of the instructions or warnings in this document can result
in electrical shock, serious injury, or death, or can damage the battery, potentially rendering it
inoperable.
2) If the battery is stored for a long time, it is required to charge them every six months, and the SOC
should be no less than 90%.
3) Battery needs to be recharged within 12 hours, after fully discharged.
4) Do not expose cable outside.
5) All the battery terminals must be disconnected for maintenance.
6) Do not use cleaning solvents to clean the battery.
7) Do not expose battery to flammable or harsh chemicals or vapors.
8) Do not paint any part of the battery, include any internal or external components.
9) Do not connect the battery with PV solar wiring directly.
10) The warranty claims are excluded for direct or indirect damage due to the items above.
11) Any foreign object is prohibited to insert into any part of the battery.
Warning
1.1 Before Connecting
1) After unpacking, please check the product and packing list first, if the product is damaged or missing
parts, please contact the local retailer.
2) Before installation, be sure to cut off the grid power and make sure the battery is in the turned-off
mode.
3) Wiring must be correct. Do NOT misconnect the positive and negative cables, and ensure no short
circuit with the external device.
4) It is prohibited to connect the battery and AC power directly.
5) The embedded BMS in the battery is designed for 102.4VDC, please DO NOT connect the battery in
series.
6) Please ensure the electrical parameters of the battery system are compatible with related equipment.
7) Keep the battery away from water and fire.
1.2 In Use
1) If the battery system needs to be moved or repaired, the power must be cut off and the battery is
completely shutdown
2) It is prohibited to connect the battery with a different type of battery
3) It is prohibited to put the batteries working with faulty or incompatible inverter system.
4) It is prohibited to disassemble the battery (QC tab removed or damaged);
5) In case of fire, only dry powder fire extinguisher can be used, liquid fire extinguishers are prohibited.
6) Please do not open, repair, or disassembly the battery except staff authorized. We do not undertake
any consequences or related responsibility which because of violation of safety operation or violating
of design, production, and equipment safety standards.

2
2. Introduction
These high-voltage Lithium iron phosphate battery modules are designed to integrate with reliable inverter
modules to offer a total solar energy storage solution for households.
It is built-in smart battery management system (BMS), which can manage and monitor cells’ information
including voltage, temperature, current, etc. Moreover, BMS can balance cells charging and discharging to
extend cycle life. Battery modules can be used alone or in parallel to expand capacity for different
requirements.
2.1 Features
Non-toxic, non-polluting, and friendly for the environment.
LiFeO4 cell material with safety performance and long cycle life.
Smart BMS protection functions: over-discharge, high temperature, over-charge, over-current.
Parallel operation up to 5 units for energy expansion
Suitable for wide range of solar inverters with high-voltage
Flexible configuration, multiple battery modules can be easily stacked and added for energy
expansion.
Working temperature range is from 0°C to 50°C with excellent discharge performance and cycle
life.

3
2.2 Package Contents
You should receive the following items inside of package:
Controller Box Package
Controller Box
Manual
Fixing plates x 2
Round-head screws
M4 x 8
1.5m RJ45 cable
BMS communication
cable
Battery Module Package
Battery module
Fixing plates x 2
L-type brackets x 2
Expansion bolt M10 x 2
Round-head screws M4
x 12
Cable B-B
0.4m RJ45 cable
Stand Feet Package
Stand Feet
Fixing plates x 2
(Left x 1 and Right x 1)
Round-head screws M4
x 8
Expansion bolt M10 x 4
Separate battery cable kit:
EC405 battery cable kit
Cable B-C
Cable B-C2
Cable I-C
EC605 battery cable kit
Cable B-B2
Cable B-C
Cable B-C2
Cable I-C

4
2.3 Specifications
Model
EC205
EC305
EC405
EC605
Controller Box Module
HVC 05
Single Battery Module
HVB 05
(102.4V/50AH, 5120Wh)
Numbers of Battery Modules
2
3
4
6
PARAMETERS
Nominal Voltage
204.8 VDC
307.2 VDC
409.6 VDC
614.4 VDC
Full Charge Voltage (FC)
230.4 VDC
345.6 VDC
460.8 VDC
691.2 VDC
Full Discharge Voltage (FD)
179.2 VDC
268.8 VDC
358.4 VDC
537.6 VDC
Typical Capacity
50 Ah
Typical Energy
10K Wh
15K Wh
20K Wh
30K Wh
Max. Continuous Discharge
Current
60A
Max. Peak Discharge Current
75A
Protection
BMS & Circuit breaker
Charge Current
10A
Max. Charge Current
25A
Standard Charge Method
0.2C CC (Constant current) charge to FC,
CV (Constant voltage FC) charge till charge current decline to <0.05C
Inner Resistance
≤20m ohm
Operation Temperature
Charge : 0ºC ~ 55 ºC
Discharge : 0ºC ~ 55 ºC
PHYSICAL
Dimension of Controller Box
Module, D x W x H (mm)
630 x 220 x 210
Net Weight of Controller Box
Module (kg)
9.95
Dimension of Single Battery
Module, D x W x H (mm)
630 x 220 x 320
Net Weight of Single Battery
Module (kg)
51.3
Dimension with Stand Feet,
D x W x H (mm)
726 x 205 x 110
Dimension,
D x W x H (mm)
630 x 220 x 960
630 x 220 x
1280
630 x 220 x 1600
630 x 220 x 1280
+630 x 220 x
1070
Net Weight (kg)
118
169
221
328
EMC
EN IEC 61000-6-1:2019, EN IEC 61000-6-3:2021
Safety
IEC 62619
Transportation
UN38.3

5
2.4 Product Indicator & Setting
Controller Box
23
5
4
11
++
- -
+
-
LED4 LED3 LED2 LED1
1
6
7
8
910
12
Left Side View Front View Right Side View
1
Cold start button - Wake up battery when battery is in shutdown mode.
After pressing the button for about 3 seconds, the battery would be waked up from shutdown mode. If
pressing the button for 3 seconds in active mode, the battery will enter shutdown mode.
2
Battery level LEDs –Indicate battery level. Refers to the LED indicator table for the details.
3
Status LEDs –Indicate battery module status. Refers to the LED indicator table for the details.
LED indicators:
Battery status
Status LEDs
Battery Level LEDs
Status
SOC
RUN
ALARM
LED1
LED2
LED3
LED4
Normal
mode
Charging
0% ~ 25%
ON
OFF
Flashing
OFF
OFF
OFF
26% ~ 50%
ON
OFF
ON
Flashing
OFF
OFF
51% ~ 75%
ON
OFF
ON
ON
Flashing
OFF
76%~100%
ON
OFF
ON
ON
ON
Flashing
Discharge
0% ~ 25%
Flashing
OFF
ON
OFF
OFF
OFF
26% ~ 50%
Flashing
OFF
ON
ON
OFF
OFF
51% ~ 75%
Flashing
OFF
ON
ON
ON
OFF
76%~100%
Flashing
OFF
ON
ON
ON
ON
Static
0% ~ 25%
ON
OFF
ON
OFF
OFF
OFF
26% ~ 50%
ON
OFF
ON
ON
OFF
OFF
51% ~ 75%
ON
OFF
ON
ON
ON
OFF
76%~100%
ON
OFF
ON
ON
ON
ON
Alarm
mode
Warning
/
OFF
Flashing
The same as above
Fault
/
OFF
Solid on
The same as above
Power off
/
OFF
OFF
OFF
OFF
OFF
OFF
4
Input power connectors - Connect to battery module. Positive terminal is marked in ”BAT+” and
negative terminal is marked in “BAT-”.

6
5
Output power connectors
There are two sets of battery connectors in parallel. Positive terminals are marked in ”BAT+” and
negative terminals are marked in “BAT-”.
6
12V input port – Wake up battery when battery is in shutdown mode or AC power sensor.
7
EXT COM RJ45 ports –Connect controller box to inverter system, or controller box parallel
connection.
PIN
Definition
1
External CANL to inverter system or controller box
2
External CANH to inverter system or controller
box
3
Present
4
External 485_B to inverter system
5
External 485_A to inverter system
6
GND for external 485
7
GND for present
8
NC
8
INT COM RJ45 ports –Connect battery module to battery module, or battery module to controller
box.
PIN
Definition
1
12V Positive
2
12V Negative
3
GND for RELAY_CRL and INT_IN
4
RELAY_CRL
5
INT_IN
6
GND for internal CAN
7
Internal CANL to Module
8
Internal CANH to Module
9
On/Off DIP Switch –Enable/disable the output of battery.
10
ID Switch –Set ID address for each controller box.
11
Emergency Switch –Cut off power output of battery.
12
PE Port - Protecting earthing port
Battery Module

7
1
4
1
2
3-
+
5
6
Left Side View Front View Right Side View
1
Handles –Move the battery module.
2
DC breaker –Control the positive pole of battery module.
Caution: Pay attention to the polarity of DC breaker. It cannot be used to cut off battery power loop
when charging or discharging. Otherwise, it may cause the breaker damage.
3
Modular power connectors
Positive terminals are marked in ”BAT+” and negative terminals are marked in “BAT-”.
4
Communication ports –Connect battery module to battery module, or battery module to
controller box. The definition of PINs is the same with INT COM RJ45 ports of controller box.
5
Status LEDs
ALARM LED: When the LED is blinking, it means there is alarm in BMS. When the LED is solid, that
means there is fault in BMS。
RUN: When the LED is lighting green, that means BMS is running.
6
DIP Switch–Set ID address for each battery pack.
3. INSTALLATION
3.1 Installation Environment
Make sure that the installation environment meets the following conditions:
The area is completely waterproof.
The floor is flat and level.
There are no flammable or explosive materials nearby.
The ambient temperature is within the range of 0~50°C.
The temperature and humidity are maintained at a constant level.
There is minimal dust and dirt in the area.
Caution:
If the ambient temperature is out of the operating range, the battery module will stop operating to protect
itself. The optimal temperature range for the battery module to operate is 0°C to 50°C. Frequent exposure
to harsh temperatures may deteriorate the performance and shorten the life cycle of the battery module.

8
3.2 Mounting the Modules
Step 1: Use Ø 13mm to drill holes at a depth of 60mm at the wall according to the distance indicated
below. Drill four holes on the floor first for stand feet, then drill two holes for the mounting plates of each
battery module on the wall.
28mm
28mm
320mm 320mm
270mm
Floor
Wall
150mm
150mm 683mm
270mm
320mm 320mm
320mm
10mm 10mm
703mm
320mm
Step 2: Push four expansion bolts into the Ø 13mm holes drilled on the floor. Remove nut, spring washer,
and flat washer.
Step 3: Take the stand feet and put them on the ground. Align the hole on the stand feet with four
expansion bolts on the ground and pass through the bolts on the floor. Then, screw back the nut, spring
washer, and flat washer.
Step 4: Remove the side cover of battery module, put it on the top of stand feet. Make sure they are
aligned well.

9
Step 5: Install the left and right fixing plates onto the stand feet with eight screws, then mount two L-
type brackets of battery module onto the wall with four M4*8 Round-head screws. Assemble the expansion
bolts for two L-type brackets of battery module as step 2 and 3.
Step 6: Put the second battery module on the top of first battery module on the floor. Install two L-type
brackets and two fixing plates as following picture shown. Assemble the expansion bolts for two L-type
brackets of battery module as step 2 and 3. If there are more battery modules installed, please repeat the
same steps.
The suggested maximum stacked quantities is four. For more battery modules in series, please set another
group for installation.
Step 7: Stack the controller box on the top of last battery module. Install two fixing plates on both sides
of controller box and battery module with eight M4*8 Round-head screws.

10
3.3 Wiring Configuration
Single Battery Module Connection
Step 1: Insert 0.4m RJ45 cable to connect the INT COM RJ45 port of controller box. The other end
connects to the communication port of the #1 battery module.
Step 2: Connect the communication port of #1 battery module to the communication port of #2 battery
module with 0.4m RJ45 cable. If there are more battery modules are connected in the system, repeat this
step to connect more battery modules.
If over 2 groups of battery system connection, connect the communication port of the bottom battery
module in first group to the bottom battery module in another group with 1.5m RJ45 cable.
Caution: The battery module connected to the power module is the Master battery and the ID address
should be set as 0.
Step 3: Connect the EXT COM RJ45 port of controller box and BMS port of solar inverter with a BMS
communication cable.
Step 4: Refer to following wiring diagram for cable connection. Separate battery cable kit will be supplied
based on different model requirement. Make sure the plority is correctly connected.
Caution: Keep the breaker of module and emergency switch of control box to “OFF” before
connection.

11
EC205 Wiring:
0.4m RJ45 cable
0.4m RJ45 cable
Controller Box
1# Battery Module
2# Battery Module
Stand Feet
-+
Inverter
System
-++
-
BMS Communication cable
Cable B-B

12
EC305 Wiring:
0.4m RJ45 cable
0.4m RJ45 cable
-+
0.4m RJ45 cable
Controller Box
1# Battery Module
2# Battery Module
Stand Feet
3# Battery Module
-++
-
Inverter
System
BMS Communication cable
Cable B-B
Cable B-B

13
EC405 Wiring:
Controller Box
1# Battery Module
2# Battery Module
Stand Feet
3# Battery Module
4# Battery Module
0.4m RJ45 cable
0.4m RJ45 cable
0.4m RJ45 cable
0.4m RJ45 cable
Inverter
System
-++
-
BMS Communication cable
Cable B-B
Cable B-B
Cable B-B
-+
BAT+BAT-
Cable B-C
Cable I-C
Cable B-C2

14
EC605 Wiring:
0.4m RJ45 cable
0.4m RJ45 cable
0.4m RJ45 cable
0.4m RJ45 cable
0.4m RJ45 cable
1.5m RJ45 cable
Controller Box
1# Battery Module
2# Battery Module
3# Battery Module
Stand Feet
6# Battery Module
Stand Feet
4# Battery Module
5# Battery Module
Inverter
System
-++
-
1# Group 2# Group
BMS Communication cable
Cable B-B
Cable B-B
Cable B-B
Cable B-B
BAT+BAT-
Cable B-B2
Cable B-C2
Cable B-C
Cable I-C
-+
ID switch setting
Controller
Box
1# Battery
Module
2# Battery
Module
3# Battery
Module
4# Battery
Module
5# Battery
Module
6# Battery
Module
0
0
1
2
3
4
5

15
Multi-Battery Module Connection
Caution: Keep the breaker of module and emergency switch of control box to “OFF” before
connection.
Controller Box
1# Battery Module
2# Battery Module
Stand Feet
3# Battery Module
4# Battery Module
0.4m RJ45 cable
0.4m RJ45 cable
0.4m RJ45 cable
0.4m RJ45 cable
Inverter
System
0.4m RJ45 cable
0.4m RJ45 cable
0.4m RJ45 cable
0.4m RJ45 cable
-++ --++
-
1# Group 2# Group
Controller Box
1# Battery Module
2# Battery Module
Stand Feet
3# Battery Module
4# Battery Module
+
-BMS Communication cable
Multi-
Connection
ID switch setting
Controller
Box
1#
Battery
Module
2#
Battery
Module
3#
Battery
Module
4#
Battery
Module
5#
Battery
Module
6#
Battery
Module
1# Group
0
0
1
2
3
4
5
2# Group
1
0
1
2
3
4
5
3# Group
2
0
1
2
3
4
5
4# Group
3
0
1
2
3
4
5
5# Group
4
0
1
2
3
4
5

16
4. Start-Up/Shut-Off the Battery Module
4.1 Start up the battery module
(a) When battery module is in the shutdown mode, press cold start button for over 3 seconds.
(b) Or, simply turn on the solar inverter which is connected to a battery module already. The battery
module will be automatically turned on.
4.2 Shut-off the battery module
When battery module is in the operating mode, after pressing cold start button for over 3 seconds, the
battery will enter shutdown mode.
5. Trouble Shooting
Use the table below to solve minor installation and operation problems.
Situation
Fault Event Description
Solution
No output from battery
pack.
On/off DIP switch is disabled.
Re-check if the Power on/off DIP
switch is on the side of ”EN”.
Battery cannot discharge
Same ID address set in multiple
battery packs.
Re-set each battery with different
ID address.
Under-voltage protection.
Charge battery.
Protection against over-
temperature or under-
temperature (cell temperature is
lower than 0°C or higher than
55°C).
Regulate cell temperature in the
range of 0°C to 55°C for
discharge.
Protection against over current.
Remove some non-critical load
and charge battery.
Battery output is short circuited.
Relieve short circuit and charge
battery.
System failure detected.
Shut down system and call
maintenance service.
In parallel battery packs, CAN
communication lost and “parallel
imbalance” occur on slave battery.
Ensure communication wires are
all correctly connected well.
Battery cannot charge
Protection against over current.
Reduce the output current of
power module.
Protection against over-
temperature or under-
temperature (cell temperature is
lower than 0°C or higher than
55°C).
Regulate cell temperature in the
range of 0°C to 55°C for charge.
System failure detected.
Shut down system and call
maintenance service.
Communication
failure is detected
Communication cable is not
connected well.
Check if communication cable is
firmly connected.
Communication ID conflict no
matter it happened on battery
modules or controller boxes.
Re-check ID switch setting on
parallel batteries and controller
boxes. Make sure no any
duplicated ID no. setting.
System failure detected.
Shut down system and call
maintenance service.