Shenzhen Topband Battery Co., Ltd
| Supply Ability | 450Mwh/year |
| Delivery Time | 2~4weeks for samples; 4~6weeks for mass production |
| Packaging Details | standard export carton |
| Payment Terms | L/C, T/T |
| Nominal Voltage | 48V |
| Typical Capacity | 75Ah |
| Nominal Charge Voltage | 58.4V |
| Discharge Cut-off Voltage | 40V |
| Max Charge Current | 60A |
| Max Continuous Discharge Current | 60A |
| Peak Discharge Current | 350A |
| Work Temperature | -20℃ - 60℃ ( -4℉ - 140℉ ) |
| Cycles Life@ 100% DOD | ≥2000 |
| Weight | 37.7kg |
| Dimension | 520*269*221mm |
| Material | Nano LiFePO4 |
| Brand Name | Topband |
| Model Number | TB4875F-S113A |
| Certification | MSDS,CE |
| Place of Origin | China |
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Product Specification
| Supply Ability | 450Mwh/year | Delivery Time | 2~4weeks for samples; 4~6weeks for mass production |
| Packaging Details | standard export carton | Payment Terms | L/C, T/T |
| Nominal Voltage | 48V | Typical Capacity | 75Ah |
| Nominal Charge Voltage | 58.4V | Discharge Cut-off Voltage | 40V |
| Max Charge Current | 60A | Max Continuous Discharge Current | 60A |
| Peak Discharge Current | 350A | Work Temperature | -20℃ - 60℃ ( -4℉ - 140℉ ) |
| Cycles Life@ 100% DOD | ≥2000 | Weight | 37.7kg |
| Dimension | 520*269*221mm | Material | Nano LiFePO4 |
| Brand Name | Topband | Model Number | TB4875F-S113A |
| Certification | MSDS,CE | Place of Origin | China |
| High Light | Floor Sweeper Battery ，Battery Deep Cycle | ||
Professional 48V 75AH Floor Scrubber Battery With High Energy Density
1. General Information
This specification defines the performance of rechargeable LiFePO4 battery pack TB4875F-S113A 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 | 75Ah | |
| 3 | Internal Resistance | ≤40mΩ | |
| Standard Charge | |||
| 4 | Battery operation temperature range @charging | 0~45℃ | |
| 5 | Normal charge voltage | 58.4±0.4V | |
| 6 | Recommended float charge voltage(for Standby use) | 55.6±0.4V | |
| 7 | Allowed MAX charge current | 60A@Battery initial Temp 25±5℃ | |
| 8 | Recommended charge current | ≤40A | |
| Standard discharge | |||
| 9 | Battery operation temperature range @discharging | -20~60℃ | |
| 10 | Output Voltage Range | 36.8~58.4V | |
| 11 | Allowed discharge current | 100A withstand 30min @Battery initial Temp 25±5℃ | |
| 12 | Peak discharge current | 350A withstand 3s | |
| 13 | Discharge Cut-off voltage | 36.8V | |
| Mechanical Characteristics | |||
| 14 | Dimension | Length 520±3mm | |
| Width 269±3mm | |||
| Height 221±3mm | |||
| 15 | Weight | Approx. 37.7Kg | |
| 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 | ≤40mΩ | Test the internal resistance of 50% SOC battery pack with 1 kHz AC internal resistance test instrument. | |
| 2 | Capacity | ≥73.5Ah | 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 | 60A | Charging with this current for more than 0.5h and the added temperature of battery pack less than 20℃. | |
| 5 | MAX discharge Current | 100A | Discharging with this current for more than 10min and the added temperature of battery pack less than 35℃. | |
| 6 |
Cycle life (DOD%100) | ≥2000cycle | 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 | Above the release value | |
| Over current | Discharge over current protection | 400±50A |
| Protection delay time | 50~200ms | |
| Over current release method | Release after 8s. | |
| Over & Lower Temperature | Battery over temperature | Protection @65±5℃ |
| Release @55±5℃ | ||
| Battery Lower temperature @charging | Protection @-5±5℃ | |
| Release @5±5℃ |
5. Dimensional Drawing
Company Details
Business Type:
Manufacturer,Exporter
Year Established:
1996
Total Annual:
240million-250million
Employee Number:
5000~5500
Ecer Certification：
Active Member
Shenzhen Topband Co., Ltd. was registered in so-called “China Silicon Valley”, Shenzhen Hi-tech Industrial Park in 1996, and got listed in Shenzhen Stock Exchange ( the stock code as 002139) in 2007. After years of rapid development, now Topband takes lithium battery as the ... Shenzhen Topband Co., Ltd. was registered in so-called “China Silicon Valley”, Shenzhen Hi-tech Industrial Park in 1996, and got listed in Shenzhen Stock Exchange ( the stock code as 002139) in 2007. After years of rapid development, now Topband takes lithium battery as the ...
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