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Long Cycle Life UPS Rechargeable Batteries 48V 50AH With MSDS / CE Certificate

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Long Cycle Life UPS Rechargeable Batteries 48V 50AH With MSDS / CE Certificate

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Brand Name :	Topband
Model Number :	TB4850F-T110C
Certification :	CE, MSDS
Supply Ability :	450Mwh/year
Delivery Time :	2~4weeks for samples; 4~6weeks for mass production
Price :	Negotiable
Payment Terms :	L/C, T/T

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Long Cycle Life UPS Rechargeable Batteries 48V 50AH With MSDS / CE Certificate

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

5. Dimensional Drawing

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