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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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Lightweight Lithium ion Rechargeable Marine Battery 12V 250AH 2 years Warranty

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Lightweight Lithium ion Rechargeable Marine Battery 12V 250AH 2 years Warranty

Brand Name : Topband

Model Number : TB12250F-S104A_00

Certification : MSDS

Place of Origin : China

MOQ : 10pcs

Price : Negotiable

Payment Terms : L/C, T/T

Supply Ability : 450Mwh/year

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

Packaging Details : standard export carton

Battery material : Nano LiFePO4

Dimension : 496*271*222mm

Weight : 32.2Kg

Charge voltage : 14.6V

Capacity : 250Ah

Energy : 237.5Wh

Cut-off discharge voltage : 8V

Cycle life : 2000cycles @100%DOD

Warranty : 2 years

Operate temperature : -20°C~60°C

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Lightweight Lithium ion Rechargeable Marine Battery 12V 250AH 2 years Warranty

1. Specification

NOItemsDescription
Normal Specification
1Nominal Voltage12.8V
2Normal Capacity250Ah
3Internal Resistance≤20mΩ
4Series-Parallel applicationup to 4 series-connected applications
5Communication function/
Standard Charge
6Charge operation temperature range0~45℃
7Normal charge voltage14.6±0.1V
8Recommended float charge voltage(for Standby use)13.8±0.1V
9Allowed MAX constant charge current80A@Battery initial Temp 25±5℃
10Recommended charge current≤80A
Standard Discharge
11Discharge operation temperature range-20~60℃
12Output Voltage Range8.0~14.6V
13Allowed MAX constant discharge current80A @Battery initial Temp 25±5℃
14Discharge peak current100A/30min,350A/3s
15Discharge end voltage8.0V


2. Electrical Characteristics & Test Condition
Testing Conditions: Ambient Temperature: 25±5℃; Huminity:45%~75%.

NOItemsCriterionCondition
1Min Capacity≥250AhRest for 1 hour after fully charged, then discharge with 0.33C current until the battery reaches the cutoff voltage. you can stop and define the Discharging current*time value (Ah) as battery capacity.
2



Cycle life (DOD%100)

≥2000cycle

Charge / CC(0.33C)/CV(14.6V);
End current : 0.05C;
Rest time : 1h;
Discharge / CC(0.5C);
End voltage : 8.0V;
Repeat above process until discharge capacity is no more than 80% of normal value. Accumulated times is defined as cycle life.

3


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%
4Charge Retention abilityremain 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.


3. 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 itemContentCriterion
Over chargeOver-charge protection for each cell3.80±0.03V
Over-charge release for each cell3.60±0.05V
Over-charge release methodUnder the release voltage
Over dischargeOver-discharge protection for each cell2.00±0.05V
Over-discharge release for each cell2.30±0.05V
Over-discharge release methodCharging
Over currentDischarge over current protection350~550A
Protection delay time10~40ms
Over current release methodRelease after cutoff the load.

Over
Temperature

Battery over temperatureProtection @65±5℃
Release @50±5℃

Over
Temperature

Battery lower temperatureProtection @100±5℃
Release @70±15℃


4. Dimensional Drawing
Lightweight Lithium ion Rechargeable Marine Battery 12V 250AH 2 years Warranty
Lightweight Lithium ion Rechargeable Marine Battery 12V 250AH 2 years Warranty























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