36V 80ah Lithium-Ion Battery for Solar System 12V 40Ah

- Oct 22, 2017-

Basic Info

  • Model NO.: PN724020S1P

  • Connection Mode: Series and Parallel

  • Discharge Rate: Low Discharge Rate

  • Accessories Type: Battery

  • Standard Voltage: 36V

  • Electrolyte: Nmc

  • Internal Impedance: 10m Ohm

  • Application: Solar System, EV, Hev, UPS

  • Transport Package: Carton and Pallet

  • Origin: China

  • Type: Lithium-Polymer Battery Pack

  • Rechargeable: Chargeable

  • Size: Large

  • Rated Capacity: 80ah

  • Usage: Back up for Solar Energy

  • Weight: 15.8kg

  • Cycle Life: >2000 Cycles

  • Trademark: Melsen

  • Specification: 169mm*191mm*253.5mm

  • HS Code: 85079090

Product Description

12V 40ah Lithium-Ion Battery for Solar System
Melsen is a pioneer in the lithium battery market and a unique lithium battery solution company. LiFePo4 and NMC(Li(NiCoMn)O2) are the major material. 

Lithium polymer battery modules in parallel or in series, can be used in electric vehicle, E-bike, UPS, energy storage system, telecommunication base station, E-scooter, E-tools, unmanned airplane, golf cart, fork lift, cleaning car, electric wheelchair, etc.
Product specification:

68.4V 40Ah lithium polymer battery pack
MechanicalCell & MethodTernary/(NiCoMn)O2, 19S1P
Electrical CharacteristicsRated Capacity40Ah
 Min Capacity39Ah
 High Rate Discharge Capacity> 90% Rated Capacity
 Discharge Capacity @ -20oC(-4oF)> 70% Rated Capacity
 Norminal Voltage68.4V
 Open Voltage74-76V
 Load Voltage≥ 52.25V
 Internal Impedance(@ 1000Hz.)≤ 50mΩ
 Cycle Life>1000 Cycles @ 3C 100% DOD
 Months Self Discharge≤ 5% @ 25oC(77oF)
 Efficiency of Charge100% @ 1/3C
 Efficiency of Disharge95% @1C
Standard ChargeMax Charge Voltage79.8V
 Charge Cut-off Voltage79.8V
 Charge Current1/3C, 13.3A
 Max Charge Current40A
Standard DischargeStandard Current40A
 Max Discharge Current3C, 120A
 Discharge Cut-off Voltage52.25V
EnvironmentalCharge Temperature0 oC to 45oC(32oF to 113oF) @ 65±20%Relative Humidity
 Discharge Temperature-20oC to 60oC(-4oF to 140oF) @ 65±20%Relative Humidity
 Storage Temperature≤ 1 Month, -20oC to 60oC(-4oF to 140oF) @ 65±20%Relative Humidity
  ≤ 6 Month, -20oC to 30oC(-4oF to 80oF) @ 65±20%Relative Humidity

Melsen cell's performance and Application


Safety Performance


Test name



Over charge

No fire,no explosion


Over discharge

No fire,no explosion


Short Circuit

No fire,no explosion



No fire,no explosion,no leakage


Hot oven

No fire,no explosion



No fire,no explosion


Needle puncture

No fire,no explosion

Battery quality control for after-sale
All of Melsen battery cells in a pack are with very high consistency.In a pack, each cell has its ownsole electronic code(ID number) for quality control after-sale. Assume one cell in a pack is damaged in any reason after several years later, we could provide a exactly same cell to the client to replace this damaged one(same voltage, capacity, impedance,etc.), in order to make sure all of the cells in this pack with very high consistency. Melsen has a strong system working for this.