LiFePO4 Telecom Battery 48V20Ah With RS485 Communication With LED
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
2. Battery Specification(@ 25±5℃)
|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|
|2.14||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|
|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.
|3.1||Normal Capacity||20Ah||After Normal charge, discharge @0.33C current to the end of
|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.|
Capacity @specified temperature
Capacity @ 25℃
|3.6||Capacity retention rate|
|After normal charge, store the battery @25±5℃ for 28days, then
discharge capacity @0.33C,the retention capacity accord with
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.
|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
5.2 Operation panel direction
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
- Single module or the whole system over discharge protection not
recovered in 30s
- Press the keys for 3s
- 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).
- Standby more than 24h( no communication, no charge or discharge, no
- 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
- Connect to charger, and the charger output is more than 48V.
- Press the keys for 3s
- 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
5.5 Installation drawing
Case dimension: 482(Width) * 330(Depth) * 88(height) mm;
Handle Depth:35mm; weight:Approx.14kg.
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
* 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
* When battery run out of power, please charge your battery timely
* 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