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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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12V 75ah RV Camper Battery LiFePO4 With Bluetooth Monitoring Feature

12V 75ah RV Camper Battery LiFePO4 With Bluetooth Monitoring Feature

Brand Name : Topband
Model Number : TB-BL1275F-M110A
Certification : CE, ISO9001, ISO14001, MSDS
Place of Origin : China
MOQ : 100pcs
Price : Negotiable
Payment Terms : L/C, T/T
Supply Ability : 450Mwh/year
Delivery Time : 2~3weeks for samples; 4~6weeks for mass production
Packaging Details : standard export carton
Chemistry : LiFePO4
Norminal voltage : 12.8V
Norminal capacity : 75Ah
Cycle life : ≥2000 (100% DOD)
Weight : 9.6KG
Dimension : 318*165*215mm
Type : prismatic
Warranty : 2 years
Max. discharge : 75A
Max. Charge : 40A
Peak Discharge Current : 300A / 3S
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12V 75ah RV Camper Battery LiFePO4 With Bluetooth Monitoring Feature

  • long life & deep cycle( over 2000cycles @ 100%DOD)
  • with built-in PCM/BMS protection
  • rapid charge/discharge performance
  • safe pressure valve design ( no explosion, no fire)
  • high energy density
  • low self-discharge( <3% per month,<15% per year)
  • 1/3 weight & 1/2 volume of lead acid battery
  • eco-friendly
  • high consistency
  • no memory effect
  • easily replace lead acid battery
  • patent Bluetooth connection feature optional, enable IOS & Android app to monitor instant battery status(SOC, voltage, current, remain AH, temp., life cycle, error, contacts).

Lead acide battery VS. Topband LiFePO4 battery
ItemLead acid batteryLiFePO4 batteryComparison results
wh/kg30-45100-150LiFePO4 battery is 1/3 weight of lead acid battery
wh/L60-80200-250LiFePO4 battery is 1/2 volume of lead acid battery
  conclusion 1LiFePO4 battery has higher energy density than that of lead acid battery.
cycle life300-500cycles2000cycles @80% DOD
1500cycles @100% DOD
LiFePO4 battery's life cycle is 5times of that of lead acid battery, and more cycles at deep discharge
  conclusion 2LiFePO4 battery has much better cycle life.
charge rate≤0.3C0.5-1CLiFePO4 battery can bare quick charge, eg., 2hs full charge for LiFePO4 battery, while more than 6hs for lead acid battery.
discharge rate3-5C,only 30%-40% capacity release under 3C discharge3-10C, 80%-90% capacity release under 3C dischargeLiFePO4 battery support high rate discharge, and more capcity release under high rate discharge
  conclusion 3LiFePO4 battery has higher charge & discharge rate
self-discharge rate3-10%<1.5%lead acid battery will be useless for long time storage, LiFePO4 battery can stock for long time
  conclusion 4LiFePO4 battery has lower self-discharge rate
pollutionPb( against Rohs)N/A 
  conclusion 5LiFePO4 is more eco-friendly
maitenanceneed fill water or mantain constantlyfree maitenance 
  conclusion 6LiFePO4 need no maitenance
  conclusion 7LiFePO4 has built in BMS for better control
optional feature bluetooth connectionTopband LiFePO4 allow users read battery info.
  conclusion 8Topband LiFePO4 support bluetooth connection
  conclusion 9Topband LiFePO4 has longer warranty
  conclusion 10LiFePO4 is higher in price
SummaryLiFePO4 battery meets the trend of development
 LiFePO4 battery is better than lead acid battery from different point of view, except for price.

1. General Information

This specification defines the performance of rechargeable LiFePO4 battery pack TB-BL1275F- M110A manufactured by SHENZHEN TOPBAND NEW ENERGY CO.,LTD, describes the type, performance, technical characteristics, warning and caution of the battery pack. The battery pack support Bluetooth communication function. Through installation IOS & Android application

(TBEnergy.apk) on mobile terminal, the user can read the battery pack system information.

2. Specification

Normal Specification
1Nominal Voltage12.8V
2Normal Capacity75Ah
3Internal Resistance≤20mΩ
Standard Charge
4Battery operation temperature range @charging0~45℃
5Normal charge voltage14.6±0.1V
6Recommended float charge voltage(for Standby use)13.8±0.1V
7Allowed MAX constant charge current75A@Battery initial Temp 25±5℃
8Recommended charge current≤40A
Standard Discharge
9Battery operation temperature range @discharging-20~60℃
10Output Voltage Range8.0~14.6V
11Allowed MAX constant discharge current75A withstand 30min @Battery initial Temp 25±5℃
12Recommended discharge current≤60A
13Pulse discharge current300A withstand 3s
14Discharge Cut-off voltage8.0V
Mechanical Characteristics
15DimensionLength 318±2mm
Width 165±2mm
Height 215±2mm
16WeightApprox. 9.6Kg
17Storage Temperature & Humidity RangeShort: within one month-20~35℃, 45~75%RH
Long term: above one month-10~30℃, 45~75%RH
18Self-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%.

1Internal Impedance≤20mΩTest the internal resistance of 50% SOC battery pack with 1 kHz AC internal resistance test instrument.
2Capacity≥75AhRest 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.
3MAX charge Current75ACharging with this current for more than 0.5h and the added temperature of battery pack less than 20℃.
4MAX discharge Current75ADischarging with this current for more than 0.5h and the added temperature of battery pack less than 35℃.

Cycle life (DOD%100)

≥2000cycleDischarge 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.

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.
7Charge 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 cell3.90±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 cell2.50±0.05V
Over-discharge release methodCharging
Over currentDischarge over current protection300~500A
Protection delay time50~200ms
Over current release methodRelease after 8s.



Battery over temperatureProtection @65±5℃
Release @60±5℃



Battery lower temperatureProtection @-10±5℃
Release @0±5℃

5. Dimensional Drawing

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12V 75ah RV Camper Battery LiFePO4 With Bluetooth Monitoring Feature Images

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