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LiFePO4 Telecom Battery 48V20Ah With RS485 Communication With LED Indicators

LiFePO4 Telecom Battery 48V20Ah With RS485 Communication With LED Indicators

    • LiFePO4 Telecom Battery 48V20Ah With RS485 Communication With LED Indicators
    • LiFePO4 Telecom Battery 48V20Ah With RS485 Communication With LED Indicators
  • LiFePO4 Telecom Battery 48V20Ah With RS485 Communication With LED Indicators

    Product Details:

    Place of Origin: China
    Brand Name: Topband
    Model Number: TB4820F-T110D

    Payment & Shipping Terms:

    Minimum Order Quantity: 10
    Price: Negotiable
    Packaging Details: standard export carton
    Delivery Time: 2~3weeks for samples; 4~6weeks for mass production
    Payment Terms: T/T, L/C
    Supply Ability: 450Mwh/year
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    Detailed Product Description
    Battery Type: LiFePO4 Rated Voltage: 51.2V
    Capacity: 20Ah Cycle Life: Over 4000cycles @ 80% DOD

    LiFePO4 Telecom Battery 48V20Ah With RS485 Communication With LED Indicators


    1. General Information

    This specification defines the performance of rechargeable LiFePO4 battery pack TB4820F -T110D manufactured by TOPBAND NEW ENERGY CO.,LTD, describes the type, performance, technical characteristics, warning and caution of the battery pack.

    2. Battery Specification(@ 25±5℃)

    NO Items Characteristics
    2.1 Normal capacity 20Ah
    2.2 Nominal energy 1.024KWh
    2.3 Nominal voltage 51.2V (16S); 48V (15S)
    2.4 Internal resistance ≤20mΩ @1kHz AC
    2.5 Normal charge voltage 58.4±0.3V ; 54.75±0.3V (15S)
    2.6 Float charge voltage(for Standby use) 55.2±0.3V ; 51.75±0.3V (15S)
    2.7 Allowed MAX charge current 20A
    2.8 Recommended charge current ≤10A
    2.9 Allowed MAX discharge current 20A
    2.10 End of discharge voltage 40.0V ; 37.5 (15S)
    2.11 Dimension Length 482±2 mm
    height 88±2 mm
    Depth 330±2 mm
    2.12 Weight Approx. 14.0kg
    2.13 Operation temperature Charge 0~45℃
    Discharge -20~60℃
    2.14 Self-discharge rate Residual capacity ≤2%/Month; ≤10%/ year
    Recover capacity ≤1%/Month; ≤6%/ year
    2.15 Storage environment ≤1month -20~+35℃, 45~75%RH
    ≥3month -10~+35℃, 45~75%RH
    Recommend environment 15~30℃, 45~75%RH

    3. Electrical Characteristics & Test Condition

    Testing Conditions: Ambient Temperature: 25±5℃; Huminity:45%~75%.

    Normal charge: Charge battery under CC(0.33C)/CV(58.4V) mode until over charge protection or the charge current reduce to 0.05C, and then rest for 1h.

    NO Items Criterion Condition
    3.1 Normal Capacity 20Ah After Normal charge, discharge @0.33C current to the end of discharge voltage.
    3.2 Internal Impedance ≤40mΩ @50% SOC @1kHz AC internal resistance test instrument.
    3.3 Short circuit protection Auto cutoff load when short circuit Connect the positive and negative of this battery pack through a lead with 0.1Ω resistance.
    3.4 Cycle life @DOD100% ≥2000 cycles After Normal charge,discharge @0.33C current to the end of discharge voltage. Repeat above process until discharge capacity reduces to 80% of initial value.


    Discharge temperature


    -20℃ ≥70%



    Capacity @specified temperature

    LiFePO4 Telecom Battery 48V20Ah With RS485 Communication With LED Indicators

    Capacity @ 25℃


    -0℃ ≥80%
    25℃ ≥100%
    55℃ ≥95%
    3.6 Capacity retention rate

    remain capacity


    After normal charge, store the battery @25±5℃ for 28days, then discharge capacity @0.33C,the retention capacity accord with criterion.

    4. Circuit Protection

    The batteries are supplied with a LiFePO4 Battery Management System (BMS)that can monitor and optimized each single prismatic cell during charge & discharge, to protect the battery pack overcharge, over discharge, short circuit. Overall, the BMS helps to ensure safe and accurate running.

    No Item Content Criterion
    4.1 Over charge Over-charge warning for each cell 3.60±0.03V
    Over-charge protection for each cell 3.70±0.03V
    Over-charge release for each cell 3.38±0.05V
    Over-charge release method Under the release voltage
    4.2 Over discharge Over-discharge warning for each cell 2.80±0.05V
    Over-discharge protection each cell 2.50±0.05V
    Over-discharge release for each cell 2.90±0.10V
    Over-discharge release method Charging
    4.3 Over current Charge over current warning 25±3A
    Charge over current protection 30A±3A
    Charge over current release Discharge or auto release after 1min
    Discharge over current warning 25±3A
    Discharge over current protection 30A±3A
    Discharge over current release Charge or auto release after 1min
    Short circuit protection Available
    4.4 Temperature Charge over temperature protection Protect@55±3℃; Release@50±3℃;
    Charge under temperature protection Protect@0±3℃; Release@5±3℃
    Discharge over temperature protection Protect@65±3℃; Release@60±3℃;
    Discharge under temperature protection Protect@-20±3℃; Release@-15±3℃;

    5. User guide

    5.1 TB48XXF-T110X Operation principle and Wiring hint

    Input 220Vac, after rectification power module, output 48V. When the power grid normal, the battery will supply power according to system requirement, and to be charged at same time; when power off, the battery will supply energy, to make sure the DC power system working normally, to realize uninterruptible power supply. The power supply has second disconnection function, when the battery voltage is low, the battery output would be cut off to protect battery life.

    LiFePO4 Telecom Battery 48V20Ah With RS485 Communication With LED Indicators


    5.2 Operation panel direction

    LiFePO4 Telecom Battery 48V20Ah With RS485 Communication With LED Indicators


    Reset RS485 RS232 Dial switch RUN LED alarm LED SOC LED

    5.3 Sleep mode


    The system would go into low-consumption mode in any of the following conditions:

    1. Single module or the whole system over discharge protection not recovered in 30s
    2. Press the keys for 3s
    3. The minimum single voltage lower than sleep voltage and the lasting time reach sleep delay time (no communication, no protection, no balance, and no current at same time).
    4. Standby more than 24h( no communication, no charge or discharge, no AC input).
    5. Force shutdown through upper-computer software.

    Before sleep mode, please make sure there is no input voltage, otherwise it can no go to sleep mode.

    5.4 wake up

    When the system is in low-consumption mode, the system would exit low-consumption mode and go into normal running mode in any of the following conditions:

    1. Connect to charger, and the charger output is more than 48V.
    2. Press the keys for 3s
    3. Connect to communication cable, open upper computer software ( if it goes to sleep mode due to over discharge protection, this method would not wake up the circuit board).

    Remark: single model or the whole system goes to low-consumption mode after over discharge protection, it would be wake-up every 4hs, to open discharge MOS. If it can be charged, it would exit sleep mode and start normal charge; if it fails to be charged after 10times of wake-up automatically, there would be no automatic wake-up.

    5.5 Installation drawing

    Case dimension: 482(Width) * 330(Depth) * 88(height) mm;

    Handle Depth:35mm; weight:Approx.14kg.

    LiFePO4 Telecom Battery 48V20Ah With RS485 Communication With LED Indicators


    5.6 Transport & Store

    The battery need to be charged every 6 months if out of use

    No fall down, no pile up over 6 layers and keep face up.

    5.7 Warning & Tips.

    Please read and follow the handling instructions before use. Improper use may cause heat, fire, rupture, and damage or capacity deterioration of the battery. TOPBAND NEW ENERGY CO.,LTD. Describes is not responsible for any accidents caused by the usage without following our handling instructions.


    * Battery must be far away from heat source, high voltage, and no exposed in sunshine for long time.

    * Never throw the battery into water or fire;

    * Never reverse two electrodes when use the battery;

    * Never connect the positive and negative of battery with metal;

    * Never knock, throw or trample the battery;

    * Never disassemble the battery without manufacturer's permission and guidance.

    * Never use mixed with other type of battery;


    * Keep the battery against high temperature. Otherwise it will cause battery heat, get into fire or lose some function and reduce the life.

    * When battery run out of power, please charge your battery timely (≤15day).

    * Please use the matched or suggested charger for this battery.

    * If battery emit peculiar smell, heating, distortion or appear any abnormity, please stop using.

    * If the battery leaks and get into the eyes or skin, do not wipe, instead, rinse it with clean water and see doctor immediately.

    * Please far away from children or pets.

    * It is strictly prohibited any series between the battery packs. Any requirements on serials connection, please contact TOPBAND for details.

    Contact Details
    Shenzhen Topband Battery Co., Ltd

    Contact Person: Jerry Yang

    Send your inquiry directly to us (0 / 3000)

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