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17

18

Maintenance

Chapter 

Five/05

General

The battery shall be recharged every three months if in long time storage

Please use clean and dry cloth/fabric to clean up the cabinet, if need further cleaning, please use
neutral cleanser. Alcohol or ammonia synthesis is forbidden.

Carrying shall be handled gently, prevent from severe compact

Prevent battery from splashing liquid

Suggest inspect the tighten of output screw every years

Troubleshooting and Solutions

Battery cannot 

discharge

Battery cannot 

charge

All LED indicators 

on

Communication 

failure

Protection against under-voltage

Protection against over-temperature or under-
temperature (cell temperature is lower than 
-

3

0°C or higher than 

70

°C)

Battery output is short circuit

Protection against over current

System failure

Battery is fully charged. Normal charge 
management

Protection against over voltage

Protection against over-temperature or under-
temperature (cell temperature is lower than -0°C 
or higher than 

65

°C)

System failure

System failure

Fault of communication cable

Halt of System communication management 

System failure

Charge battery

Regulate cell temperature in 
the range of -

2

0°C to 

65

°C for 

discharge

Relieve short circuit and charge 
battery

Remove some unimportant load 
and charge battery

Shutdown system and call 
maintenance service

Do not need to solve

Do not need to solve

Regulate cell temperature in the 
range of 0°C to 55°C for charge

Shutdown system and call 
maintenance service

Shutdown system
Call for maintenance service

Inspect communication cable

Restart Key Switch

Shutdown system
Call for maintenance service

Troubleshooting

Troubles

Solutions

Different flash status of LED indicators represents corresponding running status or alarms. Detailed 

information is shown Annex 1.

Note: The improvement of product and technology, and the possible of battery specification and appearance 
changes, Narada hold the right of final explanation!

Table 5-1  Troubleshooting and Solutions

Proper maintenance will prolong the life of a battery and will aid in assuring that it can satisfy its 
design requirements. A good battery maintenance program will serve as a valuable aid in determining 
the need for battery replacement. The users must consider their application and reliability needs 
if maintenance procedures, other than those recommended in this document, are used. Battery 
maintenance should be performed by personnel knowledgeable of batteries and the safety 
precautions involved.

FEN4850

  batteries  can  be  used  at  an  altitude  of  less  than  5000  meters.  If  the  altitude  more 

than  5000  meters,  it  will  affect  the  battery  performance  and  life  due  to    the  decrease  of  air 
pressure and temperature.

Summary of Contents for FEN4850

Page 1: ...LITHIUM IRON PHOSPHATE BATTERY NARADA POWER SOURCE CO LTD Email intl narada biz Website en naradapower com OPERATION MANUAL Version 1 0 FEN4850 Outdoor battery for Telecom 5G...

Page 2: ...ing principle Technical Characteristic Discharge performance Charge performance Operation Parameter settings Operation condition Storage and Installation Storage Installation Maintenance General Troub...

Page 3: ...peration Please check if the box is damaged If damaged please immediately notify the supplier If you find leaking liquid or white powder residue on product prohibit operation 03 04 Narada FEN4850 lith...

Page 4: ...ed Table 1 2 There is one green LED light in front panel indicating running status Detailed information is shown in Annexed Table 1 1 Indicator for alarms Indicator for running status ALM RUN 3 4 comm...

Page 5: ...ing Chemical power energy storage and power supply components Protect LFP cells against overcharge over discharge over current over temperature short circuit Equalization LFP cells for cells unbalance...

Page 6: ...MS used for battery modules of FEN4850 battery can comply with the outdoor power plants during operation no interfere with each other BMS can provide protections against overcharge over discharge over...

Page 7: ...more than 2 in parallel the max charge current recommend 0 5C Operation Condition Table 3 2 Requirements for Operation Environment Temperature Range C Discharge Charge Storage Discharge Charge Storage...

Page 8: ...destroy with appearance contact with the supplier as soon as possible This device shall be installed and operated by professionals Preparation for Installation Batteries shall not be placed close to...

Page 9: ...age drop on cable between battery module and power plant shall be less than 0 5V Method of calculation for cross sectional area of cable is shown as below A I L K U In the above formula A is across se...

Page 10: ...rtant load and charge battery Shutdown system and call maintenance service Do not need to solve Do not need to solve Regulate cell temperature in the range of 0 C to 55 C for charge Shutdown system an...

Page 11: ...te but neither charge nor discharge Charging state Discharging state Dormant state Minor Alarm Various Alarm Status Fail Various fail Major Alarm Various protection status Normal no alarm Annex 2 Inst...

Page 12: ...B C C D D Red White Yellow Black A B C D Positive Negative Negative Positive Red Black Black Red Annex 4 Introduction of WIFI FEN4850 battery has WIFI function you can connect the battery through mobi...

Page 13: ...kit Road 1 02 10 Eunos Technolink Singapore 415938 Tel 65 6848 1191 Fax 65 6749 3498 Website www narada ap com Email sales narada ap com Spectrum House Dunstable Road Redbourn St Albans Herts Al3 7PR...

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