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Shenzhen Topband New Energy Co.,Ltd
A professional manufacturer of LiFePO4 battery / lithium iron phosphate , engaged in design , research , manufacture , sales and after sales for LiFePO4 battery( cell & pack & BMS/PCM) .
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RV Camper 12 V 300AH LiFePO4 Rechargeable Battery High Capacity max 4S4P

RV Camper 12 V 300AH LiFePO4 Rechargeable Battery High Capacity max 4S4P

Brand Name : Topband
Model Number : TB12300F-S103A_00
Certification : MSDS,CE
Place of Origin : China
MOQ : 50pcs
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 : 520*221*269mm
Weight : 35Kg
Charge voltage : 14.6V
Charge : ≤80A
Discharge : ≤100A
Peak discharge : 350A(3S)
Cut-off discharge : 8V
Cycle life : 1500cycles @100%DOD
Warranty : 2 years
Operate temperature : -20°C~60°C
Capacity : 300ah
Bluetooth connection : yes
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RV Camper 12 V 300AH LiFePO4 Rechargeable Battery High Capacity max 4S4P

1. General Information

This specification defines the performance of rechargeable LiFePO4 battery pack TB12300F- S103A manufactured by SHENZHEN TOPBAND NEW ENERGY CO.,LTD, describes the type, performance, technical characteristics, warning and caution of the battery pack.

2. Specification

Normal Specification
1Nominal Voltage12.8V
2Normal Capacity300Ah
3Internal Resistance≤20mΩ
4Series-Parallel applicationNot allowed
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

Mechanical Characteristics
16DimensionLength 520±3mm
Width 269±3mm
Height 221±3mm
17WeightApprox. 37.7Kg
18Storage Temperature & Humidity RangeShort: within one month-20~35℃, 45~75%RH
Long term: above one month-10~30℃, 45~75%RH
19Self-discharge rateResidual 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%.

1Min Capacity≥291AhRest 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.

Cycle life (DOD%100)


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.


Discharge Temperature


-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.
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.

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 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.



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



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

5. Dimensional Drawing

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