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48V 50AH Deep Cycle Lithium Battery , Rechargeable Lithium Batteries

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48V 50AH Deep Cycle Lithium Battery , Rechargeable Lithium Batteries

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Brand Name:Topband

Model Number:TB4850F-S110A_00

Certification:MSDS, CB, UL, UN38.3

Price:Negotiable

Payment Terms:L/C, T/T

Supply Ability:450Mwh/year

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

Company Data

Shenzhen Topband Battery Co., Ltd

Active Member

Contact Person Jerry Yang

Business Type: 86-755-27651888-3215

Business Type: Manufacturer Exporter

Officials: Topband Industry Park,Tangtou Town,Bao'an District,Sheznzhen,China

Quality: Quality Certifitation Available

Product Details Company Profile

Product Details

48V 50AH Deep Cycle Lithium Battery , Rechargeable Lithium Batteries

1. General Information

This specification defines the performance of rechargeable LiFePO4 battery pack TB4850F-S110A_00

manufactured by Shenzhen Topband Battery Co., Ltd, describes the type, performance, technical characteristics, warning and caution of the battery pack.

2. Specification(@Battery initial Temp25±5℃)

NO.	Items	Criteria	Remarks
2.1	Rated Capacity	50Ah
2.1	Minimum Capacity	47.5Ah
2.2	Energy	2.56KWh
2.3	Nominal Voltage	51.2V
2.4	Outgoing Voltage	≥51.2V
2.5	Internal resistance	≤80mΩ
2.6	Series parallel application	Series connection is prohibited
2.7	Limited charge voltage	58.4±0.2V
2.8	Floating charge voltage	55.2±0.2V
2.9	Standard charge current	35A
2.10	Maximum charge current	≤50A
2.11	Standard discharge current	40A
2.12	Maximum discharge current	≤50A
2.13	Pulse discharge current	Withstand the 150A/3s
2.14	Discharge cut-off voltage	36.8V
2.15	Dimension	length 483.4±3mm
		Width 170±3mm
		Height 241±3mm
2.16	Weight	Approx: 24.2±0.5Kg
2.17	Operating Temperature	Charging:0～45℃
		Discharging:-20～60℃
		Recommended operating temperature:15℃～35℃
2.18	Self-discharge rate	Residual capacity:≤3%/month;≤15%/years
2.18	Self-discharge rate	Reversible capacity:≤1.5%/month;≤8%/years
2.19	Storage Temperature & Humidity Range	Less than 1 month:-20℃～35℃,45%RH～75％RH
		Less than 3 months:-10℃～35℃,45%RH～75％RH
		Recommended storage environment: 15℃～35℃,45%RH～75％RH
Long time storage: If the battery need be stored for a long time, the voltage should be 26.4V(50%SOC), and stored in the condition as storage proposal. It need at least one charge & discharge cycle every six months

3. Test Conditions

3.1 Standard Test Conditions

3.1.1 Unless otherwise specified, all performance tests is required conducted at temperature 25℃±2℃, Humidity less than 45%~75%RH.

3.1.3 Unless otherwise specified, the tested product is required unused within two month after outgoing.

3.2 Standard Charge Mode

"Standard Charge" means at 25±2℃ charge to limit voltage with 0.33C constant current, then charge with constant voltage until current less than 0.02ItA.

3.3 Quick Charge Mode

" Quick Charge" means at 25±2℃ charge to limit voltage with 0.5 C constant current, then charge with constant voltage until current less than 0.02ItA.

3.4 Standard Discharge Mode

"Standard Discharge" means at 25±2℃ discharge to the cut-off voltage with 0.33C current.

3.5 Quick Discharge Mode

"Quick Discharge" means discharge to the cut-off voltage with 0.5C current.

4. Product Performance

NO.	Items	Criteria		Testing method
4.1	Rated 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 120 minutes, you can stop and define the Discharging current*time value (Ah) as battery capacity.
4.2	Minimum Capacity	47.5Ah
4.3	Internal resistance	≤80mΩ		50% battery SOC state frequency of 1 KHZ ac resistance tester
4.4	Cycle life (DOD100%)	≥2000cycle		Discharge with the current of 0.33C 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.
4.5	Discharge Temperature Characteristics	-20℃	≥70%	At 25±5℃ discharge the battery with the current of 0.33C to the cut-off voltage and record charge capacity. Store the battery at various temperatures for 2h and discharge the battery with 0.33C to the cut-off voltage.
		-0℃	≥80%
		25℃	≥100%
		55℃	≥95%
4.6	Charge Retention ability	Residual capacity≥80%		Charge the battery to full capacity and store it for 28days, and then discharge it with 0.33C to the cut-off voltage.
		Recovery capacity≥90%

5. Protective circuit specification

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.	Items	Content	Specification
5.1	Over charge	Over-charge protection for each cell	3.85±0.03V
		Over-charge release for each cell	3.65±0.05V
		Over-charge release method	Under the release voltage
5.2	Over discharge	Over-discharge protection for each cell	2.3±0.08V
		Over-discharge release for each cell	2.5±0.08V
		Over-discharge release method	Charge to recovery
5.3	Over current	Discharge over current protection	170～230A
		Protection delay time	10~40ms
		Over current release method	After cutoff the load
5.4	Short circuit	Do not short-circuit the electrodes	Designed For 230A～500A /500us
5.5	Battery temperature	Charge over temperature	Protection @65±5℃
		Charge over temperature	Release @50±5℃
		Discharge over temperature	Protection @65±5℃
		Discharge over temperature	Release @50±5℃

6. Dimensional Drawing

Company Profile

Shenzhen Topband Battery Co., Ltd

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 core technology and has become one of the leading suppliers of lithium battery solutions in China, focusing on nano lithium iron phosphate/ LiFePO4 technology for EV, RV/ caravan, marine, motorcycle, golf cart / trolly, UPS, solar storage, medical, floor scrubber, industrial, commercial use, etc.

Smart Bluetooth & WIFI connection is is our patent feature, equipped with IOS & Android app to monitor the instant battery status (SOC, OCV, charge current, ambient temperature, and errors included).

Topband has more than 5000 staffs, covers an area of 100,000 square meters. And large production plants are mainly located at Shenzhen and Huizhou

Our R&D team of over 300 professionals, in cooperation with Tsinghua Research Institute and Harbin Industrial University have laid a firm foundation of our leading technology.

We have got the certificates of ISO9001, ISO14001, OHSAS18001, TS16949 and UL, CE, CB, UN38.3, TUV, etc.

Topband is a Hi-tech enterprise. Since the company established, with innovation, we have committed ourselves to making people’s lives more comfortable and high-efficient. We and our companions are working hard at making technology progress to let people enjoy the changes of new technology.