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Shenzhen Topband Battery Co., Ltd
A professional manufacturer of LiFePO4 battery / lithium iron phosphate, dedicated to designing, researching, manufacturing, and exporting LiFePO4 batteries( cell & pack & energy storage system) to
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LiFePO4 Telecom Battery with 3U Pack , Home Battery Backup System

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Shenzhen Topband Battery Co., Ltd
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LiFePO4 Telecom Battery with 3U Pack , Home Battery Backup System

Brand Name : Topband

Model Number : TB4850F-T110C

Certification : MSDS,CE

Place of Origin : China

MOQ : 50pcs

Supply Ability : 450Mwh/year

Delivery Time : 2~4weeks for samples; 4~6weeks for mass production

Packaging Details : standard export carton

Price : Negotiable

Payment Terms : L/C, T/T

Nominal Voltage : 48V

Typical Capacity : 50Ah

Nominal Charge Voltage : 58.4V

Discharge Cut-off Voltage : 40V

Max Charge Current : 50A

Max Continuous Discharge Current : 50A

Peak Discharge Current : 100A

Work Temperature : -20℃ - 60℃ ( -4℉ - 140℉ )

Cycles Life@ 100% DOD : ≥2000

Weight : 30.5kg

Dimension : 425*482*133 mm

Material : Nano LiFePO4

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LiFePO4 Home Battery Backup System , Telecom Battery , 3U Pack

1. General Information

This specification defines the performance of rechargeable LiFePO4 battery pack TB4850F-T110C manufactured by Shenzhen Topband Battery Co., Ltd, describes the type, performance, technical characteristics, warning and caution of the battery pack.

2. Specification

NO Items Description
Normal Specification
1 Nominal Voltage 51.2V
2 Normal Capacity 50Ah
3 Internal Resistance ≤60mΩ
Standard Charge
4 Battery operation temperature range @charging 0~45℃
5 Normal charge voltage 58.4±0.2V
6 Recommended float charge voltage(for Standby use) 55.2±0.2V
7 Recommended charge current ≤25A @Battery initial Temp 25±5℃
8 Allowed MAX charge current 50A @Battery initial Temp 25±5℃
Standard Discharge
9 Battery operation temperature range @discharging -20~60℃
10 Output Voltage Range 40.0~58.4V
11 Allowed discharge current 50A withstand 30min @Battery initial Temp 25±5℃
12 Pulse discharge current 100A withstand 3s
13 Discharge Cut-off voltage 32.0V
Mechanical Characteristics
14 Dimension Length 425±3mm
Width 482±3mm
Height 133.2±3mm
15 Weight Approx. 30.5±0.2 Kg
Storage
16 Storage Temperature & Humidity Range Short: within one month -20~35℃, 45~75%RH
Long term: above one month -10~30℃, 45~75%RH
17 Self-discharge rate Residual capacity ≤3% per month; ≤15% per year
Reversible capacity ≤1.5%per month; ≤8% per year

3. Electrical Characteristics & Test Condition

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

NO Items Criterion Condition
1 Internal Impedance ≤60mΩ Test the internal resistance of 50% SOC battery pack with 1 kHz AC internal resistance test instrument.
2 Capacity ≥50Ah Rest for 1 hour after fully charged, then discharge with 0.33C current until the battery reaches the discharge cutoff voltage. Repeat above process for three times, if the discharge time is not less than 180 minutes, you can stop and define the Discharging current*time value (Ah) as battery capacity.
3 Short circuit protection / Not allowed.
4 MAX charge Current 50A Charging with this current for more than 0.5h and the added temperature of battery pack less than 20℃.
5 MAX discharge Current 50A Discharging with this current for more than 0.5h and the added temperature of battery pack less than 35℃.
6

Cycle life (DOD%100)

 ≥1200cycle Discharge with the current of 0.5C until it can’t discharge, and then rest it for 1h. Charge the battery following CC(0.33C)/CV(14.6V) mode to full capacity, and then rest it for 1h. Repeat above process until full charged capacity is no more than 80% of normal value. Accumulated times is defined as cycle life.
7

Discharge Temperature

Characteristics

 -20℃ ≥70% At 25±5℃ discharge the battery with the current of 0.33C to the cut-off voltage. Store the battery at various temperatures for 2h and discharge the battery with 0.33C to the cut-off voltage. Record the ratio between discharging & charging capacity.
0℃ ≥80%
25℃ 100%
55℃ ≥95%
8 Charge Retention ability remain capacity≥90% Charge the battery to full capacity and store it for 28days, and then discharge it with 0.33C to the cut-off voltage.

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.

Test item Content Criterion
Over charge Over-charge protection for each cell 3.90±0.03V
Over-charge release for each cell 3.60±0.05V
Over-charge release method Under the release voltage
Over discharge Over-discharge protection for each cell 2.30±0.05V
Over-discharge release for each cell 2.80±0.05V
Over-discharge release method Charging
Over current Discharge over current protection 400±50A
Protection delay time 50~200ms
Over current release method Release after 30s.

Over & Lower

Temperature

 Battery charge/discharge over temperature Protection @65±5℃
Release @55±5℃
Battery charge lower temperature Protection @-5±5℃
Release @5±0℃

5. Dimensional Drawing

LiFePO4 Telecom Battery with 3U Pack , Home Battery Backup System


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48v deep cycle battery

      

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