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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Model Number: OPT-48V-LFP
  • Type: Li-Ion
  • Nominal Voltage: 48V DC
  • Size: 17 inchs
  • Nominal Capacity: 40Ah-100Ah
  • Case material: Hard Steel case or in PVC wrapped
  • Nominal voltage: 48V
  • Working voltage: 37.5V
  • Max. Continuous discharge current: 80A
  • Peak discharge current: 110A
  • BMS included: YES, with communication RS232/485
  • Certificate: SGS,UL,CE,RoHS,IEC-62133,TS16949 etc.
  • Cycle life: ≥2000times
  • DOD: 100%
  • Warranty: 24 months

Packaging & Delivery

Packaging Details Carton package
Delivery Time 18-20 days


48V lifepo4 battery telecom/UPS/solar
Long life
High power output
Low cost and Full Automatic Manufacture
High Safety

Rechargeable lithium battery  for Telcom/UPS/ESS lifepo4 battery48V50Ah



OptimumNano's 48V LiFePO4 Battery Packs


ItemStandard Charge CurrentCharge TimeMax. Discharge CurrentPeak currentSizeWeight
48V40Ah 20A2.1 hours80A100A482*430*130mm 30.0Kg
48V50Ah25A2.1 hours80A100A482*465*176mm 36Kg
48V80Ah 40A2.1 hours80A100A482*500*176mm                    52Kg


2.1 hours80A100A482*510*176mm             68Kg








l  Electrical Charateristics


Nominal Voltage


Nominal Capacity



(Max. at1000Hz)


Expected Cycle Life

More than 2000 cycles, with 1C charge and discharge rate, at 25 


l  Mechanical Characteristics



(3U steel rack)










l  Operation Conditions


Charge Method

Constant Current/Constant Voltage


Max. Charge Voltage


Charge Current

Max. 80A

Charge Temperature


Continuous Discharge Current

Max. 80A

Peak Instant               Discharge Current


Peak Instant               Discharge Time

5 seconds

Discharge Cut-off Voltage


Discharge Temperature


Storage Temperature








Built-In Fully Automatic Battery Management System(Circuit Protection Board)

This internal system features Automatic Cell Balancing and automatically disconnects power to the terminal
due to:
•- Low Voltage
•- High Voltage
•- Short Circuit
•- Reverse Polarity






 Advantage of lifepo4 battery




1. Green product


 LiFePO4 material is no harm to enviroment and human being .


 2. Cycle life


 over 2000 cycle times, 8-10 years life.


 3. Very safe


 It have the best safety and steady performance,no fire ,no exploding under the condition of over-charge.


 4. Light weight and smaller dimension


 The dimension  compares with other battery.about 1/2-2/3 weight of lead acid 


 5.Great capacity and more powerful,rechargeable battery


 We can install many single cells in series and in parallet and it can fully discharge


 6.no memory effect


 It can be recharged anytime,no reduction of the capacity




Quality features of OPTIMUM lifepo4 battery pack
in optimum,each cell and pack is produced with the principle "conformity in 6 aspeacts and 3 inspections in 3 stages",the high stability and reliability can be guaranteed.


"Conformtity in 6 aspects" is a principle developed by OPTIMUM engineers in production and inspection process.The application of it ensures conformity of packs and improves service term of pack obviously.
confirmtity in 6 aspects principle
1.conformity in capacity
2.conformity in impedance
3.conformity in self-discharging
4.confirmity in soc
5.confirmity in discharge stage
6.confirmity in Charge CC ratio


3 inspections in 3 stages
Battery assembly,paralleled modules,finished packs



Storage and Transportation:


   1. Based on the character of cell, proper environment for transportation of LiFePO4 battery pack need to be created to protect the battery.


   2. During transportation, 50% SOC must be kept to ensure that short circuit, appearance of liquid in the battery or immersion of battery in liquid never occur.


3. Battery should be kept at -20°C~45°C in warehouse where it’s dry, clean and well-ventilated.


4. During loading of battery, attention must be paid against dropping, turning over and serious stacking.



Warning !

  • Never throw the battery into water, keep it under dry, shady and cool circumstance when not use.
  • Never upside down the positive and negative.
  • Never connect the positive and negative of battery with metal.
  • Never ship or store the battery together with metal
  • Never knock, throw or trample the battery.
  • Never cut through the battery with nail or other edge tool.



Welcome to OptimumNano Energy Co., Ltd

































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