Renowatt MTN-94711 Wall Floor Mounted Battery Instruction Manual

Renowatt MTN-94711 Wall Floor Mounted Battery Instruction Manual

Preface

This product is a household lithium iron phosphate energy storage battery designed anddeveloped.specifically for the household storage market. With its design features of integration, miniaturization, lightweight, intelligence, and long cycle, this product has a simple and beautiful appearance, Asaf and reliable quality, and is widely used in household energy storage markets in various regions around the world.

Reference Standards and Specifications

GB/T 8897.4-2008 Primary batteries Part 4: Safety tips for lithium batteries QB/T 2502-2000 General specification for lithium-ion batteries GB T36276-2018 National standard of lithium-ion batteries for power energy storage IEC 62619-2017 Safety requirements for lithium-ion batteries and lithium-ion battery packs containing alkaline or other non-acidic electrolytes and lithium-ion batteries and lithium-ion battery packs for industrial use.
GB/T 36276-2018 Lithium-ion batteries for electric energy storage GB/T 34131-2023 Battery management system for electric energy storage GB/T 16935.1-2008 Insulation coordination of equipment in low-voltage systems Part 1: Principles, requirements and tests

Product Features

1. The battery uses lithium iron phosphate (LiFePO4) material, which has good safety performanceandlong cycle life;
2. The battery system uses a high-performance BMS battery management module, which has multipleprotection functions such as overcharge, over discharge, over-current, and temperature, andenablesgood communication between the battery system and the host;
3. Automatic charge and discharge management, the monitoring unit automatically measures thechargeand discharge current of the battery and performs floating charge and cycling charge management onthe battery;
4. Battery control technology is effectively combined with computers to monitor and control variousparameters and status in real time;
5. Flexible configuration: multiple sets of battery modules connected in parallel can meet the requirementof high-power consumption;
6. Adopting self-cooling method, the whole system has low operation noise

Product parameters

| Specifications and models| –| –| –| –| –
---|---|---|---|---|---|---
Capacity| 100Ah| 200Ah| 100Ah| 200Ah| 280Ah
Cell| Nominal voltage| 3.2V| 3.2V| 3.2V| 3.2V| 3.2V
| Internal resistance standard| ≥0.5mΩ| ≥0.5mΩ| ≥0.5mΩ| ≥0.5mΩ| ≥0.5mΩ
| Combination method| 8S1P| 8S2P| 16S1P| 16S2P| 16S1P
| Nominal capacity| 100AH| 200AH| 100AH| 200AH| 280AH
| Minimum capacity| 100AH| 200AH| 100AH| 200AH| 280AH
| Rated voltage| 25.6V| 25.6V| 51.2V| 51.2V| 51.2V
| Maximum charge voltage| 28.15V| 28.15V| 56.15V| 56.15V| 56.15V
Finishedproduct| End-of- discharge voltage| 22.4V| 22.4V| 44.8V| 44.8V| 44.88V
| Charge current| 50A| 50A| 50A| 50A| 50A
| Working current| 100A| 150A| 100A| 150A| 150A
| Weight(KG)| 24| 46.5| 46.5| 93| 115
| Dimension（MM）| 370160400| 370160600| 370160600| 500160850| 852588260
Suitable for| Standard| 50A| 50A| 50A| 50A| 50A
charging| Quickly| 100A| 150A| 100A| 150A| 150A
Operating| Charge| 0℃～55℃| 0℃～55℃| 0℃～55℃| 0℃～55℃| 0℃～55℃
temperature| Discharge| -15℃～65℃| -15℃～65℃| -15℃～65℃| -15℃～65℃| -15℃～65℃

Product Description

Figure 1 the sketch of front interface

1| Switch| 10| DIP switch: when the PACKS are used in parallel, different PACKS can be distinguished by setting theaddress of the dial switch on the BMS, it is necessarytoavoid setting the same address
---|---|---|---
2| Power output terminal| 11| Running lights
3| Parallel communication interface: for battery quantity above 2| 12| Power Indicator
4| 232 host computer interface| 13| Reset
5| CAN communication interface: connect the inverter CAN interface through the communication cable| 14| Screen
6| 485 communication interface: connect the inverter RS485 interface through the communication cable| 15| Battery terminal outlet
7| Dry contact| 16| Battery handle
8| Battery capacity indicator| 17| Battery bracket
9| Fault indicator| |

 Installation Preparation

1. Check if all accessories are included according to the packing list

Table 3 packing items

Battery1| | Terminal screws4|
---|---|---|---
Expansion screws4| | Expansion screw spacer4|
Battery bracket1| | Specification1|
Communication cable*1| | |

Installation and Operation

Figure 3 Wall installation

1. Select a solid load-bearing wall and mark the location, based on the distance of the battery bracket mounting holes;
2. Use a 10mm driller to drill a hole of about 75mm, insert the expansion screws, and tighten the expansion screw hooks;
3. Install the battery bracket to the backside of the battery, and note that all 6 screws need to be locked;
4. Lift the battery and hang it with the notch on the battery bracket on the back aligned with theexpansionscrew hook;
5. Battery and inverter connection
   • Single battery connection method
   • Parallel connection method for three groups or less (circular connection)
   • Multiple batteries connected in parallel (busbar connection)
   • Parallel Connection Notes:
     

Figure 4 single battery connect with inverter

Figure 5 Battery parallel connect with inverter

Before connecting the batteries in parallel, make sure that the voltage difference between eachgroupofbattery pack is less than 0.5V;
Measure the internal resistance of each battery pack before paralleling, and the difference ininternal resistance between the battery packs should be less than 3mΩ. The length of the wires of all battery pack should be the same as far as possible to ensure theaverageshunt.
Selection of the connecting wires for parallel connection

Table 4 load power VS. Power cable diameter

load power| Power cable diameter| load power| Power cable diameter| load power| Power cable diameter
---|---|---|---|---|---
3KW| 25mm²| 5KW| 25mm²| 8KW| 50mm²
10KW| 10KW| 15KW| 75mm²| 20KW| 95mm²

Battery communication instructions

Communication cable connection between battery packs *The connection cable is a regular network cable

Table 5 a regular network cable

Communication connection between battery pack and inverter
Figure 7 communication cable connection between battery pack and invert

Battery side communication interface PIN description
**parallel communication

CAN and RS485 Interface

RS232 Communication

RS485 – using 8P8C vertical RJ45 socket**

CAN – using 8P8C vertical RJ45:RS485 – using 8P8C vertical RJ4

socket| | socket|
---|---|---|---
RJ45 pin| Definition notes| RJ45 pin| Definition notes
1/2/3/6/8| NC| 9、16| RS485-B1
4| CAN-H| 10、15| RS485-A1

5

|

CAN-L

|

11、14

|

GND

RS485 – using 8P8C vertical RJ45 socket

4、5

|

NC

|

12、13

|

NC

Battery parallel connection communication address description

After checking that the communication cable and power cable are connected normally, dial the code, when the batteries are used in parallel,  the address can be set by the dip switch on the BMS to distinguish the different batteries, and the address should be avoided to be set as the same, refer to the following table for the definition of the dip switch of the BMS, under the parallel mode, the default dialing address of 1isthe host computer.
Address:dialing code setup

| ＃ 1| ＃ 2| ＃ 3| ＃ 4
---|---|---|---|---
0| OFF| OFF| OFF| OFF
1| ON| OFF| OFF| OFF
2| OFF| ON| OFF| OFF
3| ON| ON| OFF| OFF
4| OFF| OFF| ON| OFF
5| ON| OFF| ON| OFF
6| OFF| ON| ON| OFF
7| ON| ON| ON| OFF
8| OFF| OFF| OFF| ON
9| ON| OFF| OFF| ON
10| OFF| ON| OFF| ON
| | | |

Switching on and off

1. Press the power button switch to energize the battery; when the machine is in parallel, theinterval between the two batteries should be less than 30s;
2. Press the button switch to turn off the power, and the battery will be disconnected.

Interface display

LED working status indication
Table 6: LED Working Status Indication

Mode| Normal Alar
m Protection| ON ‘OFF| RUN| ALM| LED Power Indicator LED| Instruction
---|---|---|---|---|---|---
| | | | | | | | |
Turn off| Sleep|  Off| Off| Off| Off| Off| Off| Off| Off| Off| All off
Stand by| Normal| Ever-bright.| IFlashl| Off| Based on power indication| Standby mode
Waning| Ever-bright| lFlash2| 3Flash 3| Module low
voltage
Charge| Normal| Ever•bright| Ever•bright| Off| Based on power indication (power indication up to LED flash 2)| Maxinunn
charge LED
falshes
Warning.| Ever-bright| Ever-bright| 3Ever-bright
Overcharge
protection| Ever-bright| Ever-bright| Off| Always on| Always onvary power,| Always on| Always on| Always on| Always on| If there is nothe indicator
light rums to
standby
mode
Tempera=
e,| Ever-bright| Off| Ever-bright| Off| Off| Off| Off| Off| Off| Stop
charging
Discharge| Ever-bright
Normal| fr Ever-bright| 3Flash 3| Off| Basedonpower indication|
Warning,| Ever-bright| 3Flash 4| 3Flash 5
Overcharge
protection| Ever-bright| Off| Off| Off| Off| Off| Off| Off| Off| Stop
discharging
P Temperatur
e,| Ever-bright| Off| Ever-bright| Off| Off| Off| Off| Off| Off| Stop
discharging
Rtm out| | Off| Off| Ever-bright| Off| Off| Off| Off| Off| Off| Stop
charging and
discharging

Table 7: LED Flashing Description

Buzzer action description
In case of fault, it will beep 0.25S every 1S;In case of protection, it will beep 0.25S every 2S (except for over-voltage protection); In case of alarm, it will beep 0.25S every 3S (except over-voltage alarm);  The buzzer function can be enabled or disabled by the host computer, and it is disabled by factorydefault.
Description of reset button
When BMS is in a sleep state, press the button (3~6S) and release it, the protection board will beactivated, and the LED indicator will light up in turn from “RUN” for 0.5 seconds

When BMS is active, press the button (3~6S) and release it, the protection board will be put tosleep, andthe LED indicator will light up sequentially for 0.5 seconds starting from the lowest power lamp. When BMS is active, press the button (6~10S) and release it, the protection board will be reset, andall LEDs will light up at the same time for 1.5 seconds.
After the BMS is reset, it still retains the parameters and functions set by the host computer. If youneedto restore the initial parameters, you can do it by “Restore Default Values” of the host computer, but therelated operation records and stored data remain unchanged (e.g., power consumption, cycletimes, protection records, etc.).

Hibernation and Activate

Hibernate

When any of the following conditions are met, the system enters the low- power mode:

1. The single or overall over-discharge protection is not lifted within 30 minutes.
2. Press the key (3~6S) and release the key.
3. The lowest single unit voltage is lower than the hibernation voltage and the duration reachesthehibernation delay time (simultaneously satisfying no communication, no protection, no equalization, andno current).
4. Forced shutdown through the upper computer software.

Before entering hibernation, it is necessary to ensure that the input is not connected to an external voltage, otherwise it will not be able to enter the low-power mode. *Activate
When the system is in low-power mode and any of the following conditions are met, the systemwill exit low-power mode and enter normal operation mode:

1. Connect the charger, the output voltage of the charger should be more than 48V.
2. Press the key (3~6S), after releasing the key.
3. With RS232 activation.

Remarks: After single cell or whole battery pack over-discharge protection, enter into low-power mode, and wake up once every 4 hours to turn on the charging/discharging MOS. If it can be charged, it will exitfrom the hibernation state and enter into normal charging; if it can’t be charged by 10 consecutiveautomatic activations, it will no longer be activated automatically.
When the system is defined as the end of charging, standby for 2 days (standby time setting value), andstill has not reached the recovery voltage, forced to resume charging until the end of chargingagain

Alarms, troubleshooting

1| Cannot power on, fault indicator light on| Shut down, restart, and press the reset button toresume
---|---|---
2| the screen does not light up| Check the battery run indicator and power indicator, if thebattery works, the screen is burned out or the wiringisdisconnected.
3| Battery not charging enough| Check that the inverter charge setting cutoff soc isset to100%, check the voltage difference of battery cells, andif any single battery cell is fully charged
4| Battery not fully discharged| Check if the inverter discharge setting cutoff soc isset to0.Check the voltage difference of battery cells, andif anysingle battery cell discharge has been cut off
5| Insufficient discharge time| Check on the display for excessive differential voltage
6| Can’t turn off properly| Press the reset button to reset, if the reset is invalidandstill cannot be reset after disconnecting the load, pleasecontact us
7| No output current| Check that the inverter mode setting is correct, andcheckthat it is set to its input priority. Check that the batteryiscommunicating properly with the inverter

Battery Maintenance **Notes before using the lithium battery:

**

1. Please read and keep this manual carefully.
2. Please pay attention to all the warning labels on the battery, do not tear or damage the warning labels.
3. Confirm that the battery model matches the inverter used before use, if the lithium battery andtheinverter do not match may cause damage to the lithium battery and power-using equipment.
4. Check if the appearance of the lithium battery is intact, there is no obvious phenomenon suchasbreakage, liquid leakage, heat soak and smoke.
5. To ensure the safety of transportation, lithium battery factory power is at about 30%, due to transportation and storage cycle processes due the power consumption reasons, resulting in the first use of low or no power, this is a normal phenomenon, so do not worry about it, according to the charging instructions to replenish thepower canbe done.
6. In the case of low temperature, the available capacity of lithium battery will have different degreesof attenuation, the specific reference degree is:
   The specific reference level is as follows: -70% of the available capacity at 10℃, 85%at 0℃, and100%at 25℃. If the battery has an odor, abnormal heat, deformation and other abnormalities, please stop usingit immediately, stay away from the battery and contact the after-sales department.

Warning

The battery is not a user-serviceable part, if an abnormal phenomenon occurs, please contact the after-sales department for an overhaul. Private disassembly of the battery will not enjoy the three warranty policy and may cause the battery to generateheat, smoke, fire, or explosion.

Charging environment:

1. Use charging equipment that matches the relevant parameters of the battery, do not use equipment with mismatched voltage for charging. Continuous charging current: 0.2 CA -0.5 CA is the best chargingcurrent.
2. Please charge the battery at ambient temperature 0℃ ~ 45℃, make sure there is no flammablematerial in the surrounding area and well-ventilated.
3. Charging time instructions, the battery charging time is not more than 12 hours, overchargingwill affect the battery life, and there are security risks.
4. The capacity of the battery rises fast during the primary charging, and rises slow at the end, thisisaprogram set for charging safety and is a normal situation.
5. When charging in winter, and the outdoor temperature is lower than -20℃, the battery will stopcharging, this is a normal phenomenon, please place the battery under the appropriate ambient temperature for charging to ensure the charging effect.
6. During the charging process, the surface of the battery pack chassis will have a temperatureriseeffect,which is a normal phenomenon, please rest assured that the used, pay attention to avoid childrentouching.

 Storage environment:

1. Due to the internal resistance of lithium battery itself , there will be a certain self-consumptionof battery power. Normally, there’s power drop after placing for some time.
2. Please store the battery in an ambient temperature of -10 ℃ ~ 45 ℃, do not store the batteryinanenvironment higher than 50 ℃, it may cause the battery overheating, fire or functional failure, lifeexpectancy.
3. When the battery pack is not used for a long period of time, please do regular maintenanceandcharging, otherwise it may lead to a complete depletion of battery power and irreversible damage.
4. The most suitable storage capacity of the battery is 30%, if less than 10% or more than 50%of thecapacity for long term storage will lead to irreversible capacity degradation of the battery.
5. Lithium battery safe storage of self-depletion protection mode, the technical standards areasfollows: Long-term non use, lithium batteries have a connection to the power equipment, and the safetyperiodof up to 3 months, otherwise there may be a battery feed, can not be repaired problem. Long-term non-use, the power is not less than 30%, stored separately, a safety period of a maximumof6 months, otherwise there is a risk of battery feed, can not be repaired problems.
6. Avoid storing the battery in a place where there is a risk of falling, which may cause uncontrollabledamage to the battery and may lead to battery leakage, heat, smoke, fire, or explosion.
7. Prohibit the use of strong static electricity and strong magnetic fields, otherwise, it is easy todestroythe battery safety protection device, bringing unsafe hidden danger.

Warning:

The above improper use of the battery caused by under voltage and abnormal feed is not within the responsibility of themanufacturer

Usage

1. When wiring, be sure to confirm that the positive and negative poles of the lithiumbattery andthepolarity of the connecting wires of the power-using equipment are connected correctly.
2. The first time you use the battery to replenish the battery first, because of transportation reasonsthebattery storage capacity is less than 30%.
3. During later use, please keep the battery capacity is not less than 10%, and timely charging, whichcanextend the battery cycle life.
4. In normal use, it is recommended to reduce long time and high rate discharge, following thebatteryspecifications for use, which can extend the life of the battery.
5. The two ends of the battery connected to any conductor will cause an external short circuit, different types of batteries, short circuit may bring different degrees of severity of the consequences. Suchasthebattery can not be used, leakage, explosion, etc. Do not put the battery into a humid environment, andcan not be mixed with the conductor, such as the pocket at the same time in the key, the battery, bothmay cause a short circuit.

Serious warning:
Avoid batteries in the rain or flushing, and soaking the battery in water. Internal short-circuit, lithium batteries havetheriskof explosion and fire, and at the same time will lead to permanent failure of the battery.

Cautions

To prevent accidents such as leakage, abnormal heating, fire, degradation of performance, andexplosion,please use the battery correctly according to the following specifications. The company is not responsiblefor any accidents caused by not operating according to the provisions of this manual.

1. Hold and place the battery gently to avoid violent vibration.
2. Do not immerse the battery and its accessories in water or other liquids, and pay attention tomoisture!3) Avoid short circuiting the positive and negative outputs of the battery pack!
3. Prohibit the disassembly of the battery. Disassembling the battery may cause an internal short circuit, internal material decomposition, fire, explosion, etc. In addition, disassembling the battery may causetheelectrolyte leaking; if the electrolyte splashes on the skin, eyes or other parts of the body, pleaseflushwith water immediately and see a doctor immediately!
4. It is forbidden to put the used battery into the fire, otherwise, it will cause explosions andother dangerous accidents!
5. If the battery is damaged, deformed, leaking electrolyte or smelling strange odor and other abnormal phenomena, do not use the battery again; please send it to the manufacturer’s authorized officeor therelevant agencies for proper disposal. In addition, the battery-leaking electrolyte should be kept awayfrom fire sources to avoid causing an explosion!
6. Battery Replacement. Batteries should be replaced by the battery supplier and should not bereplacedby the user without authorization!
7. Prohibit private disassembly. Users are not allowed to disassemble the battery pack and charger privately, otherwise, the company will not be responsible for any loss caused by this reason!
8. Prohibit the combination of different capacities, models, and varieties of batteries!
9. This product must be properly grounded before use to ensure your safety

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