MWD-QDT Battery Pack

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WD-QDT(150℃)Hi-temp Battery pack 

1. Product type and model 
1.1 Type   
High temperature – Primary  lithium-thionyl chloride high-temperature battery pack 

1.2 Model  
MWD--QDT15028.8V battery pack

2. Hi-temp Battery pack characteristics 

Nominal voltage

Load voltage
Standard discharge current

Nominal capacity

Working temperature 
If the operating temperature is lower than -20 ° C or higher than 150 ° C, contact the manufacturer
Maximum external dimension /mm
Wire leads are not includedLength 260mm) 
Maximum continuous discharge current 
Maximum pulse discharge current 



Battery pack safety
Full diode fuse.

Total Fuse5A ;

Single cell’s fuse: 7A
3.Structure and appearance  Of high temperature cells
3.1 Hi-temp Battery structure 
Main materials of battery pack: ER321270S150lithium battery, Aluminum alloy tube or composite glass wire tube, Teflon plated silver wire, HL1910 circular special connector. 

3.1.1 Single hi-temp ER321270S150basic performance of lithium battery
MWD-QDT Battery Pack  

3.6V Li/SOCl2 hi-temp Battery
Size DD. Middle C-Rate Type ER hi-temperature battery

(Typical data from the batteries stored at 25±5 for 12 months)

Nominal Capacity :    28.0Ah  
(At 50mA, +25°C cut-off voltage 2.0V.)

Open Voltage  (at +25°C) :    3.67V  

Nominal Voltage  (at +25°C, 0.3mA) :    3.60V  

Max. Continuous Discharge Current:    1800mA  
(Obtained at +25°C~150°C, 50% nominal capacity, 2.0V cut-off voltage; For higher current, please consult GMB)

Pulse Current:    2000mA  
(at +25℃, the un-discharged battery starts to discharge with a base current of 1mA, the reading is still above 3.0V.)

Storage (max.) :    +30°C  
(please consult GMB for higher storage temperature requirements or stringent conditions)

Working Temperate Range :    -30°C - +150°C  
(exceeding the operating temperature range can result in reduceed capacity, low voltage reading and low initial pulse voltage reeading.)

Diameter (max.):    34.5mm  
Height (max.):    127.0mm  
Typical Weight:    208g  
Lithium Metal Content :    (About)3.5g  
      • ● stable high operating voltage and high capacitance 
      • ● high energy density, and high stable current with this high-temperature battery ER321270S;
      • ● wide operating temperature range (-30°C~+180°C)
    • ● low self-discharge rate of  high-temperature battery ER321270S (annual self-discharge rate is less than 3% at +25°C)
    • ● excellent environmental application characteristics with  high-temperature battery ER321270S
    • ●   high-temperature battery ER321270S uses stainless steel case (low magnetic resistance to environmental erosion)

      ● a positive structure with proprietary technology in high-temperature battery ER321270S. 
      ● stainless steel - glass airtight package on the  hi-temp battery ER321270S;
      ● non-combustible electrolyte applied to high-temperature battery ER321270S;
      ● high short circuit safety with hi-temp battery ER321270S
      ● Meet technical requirements of IEC60086.4:2014

      Warning: Do not charge, short circuit, heat more than 150, decompose, or put into water, directly in the battery shell surface welding, otherwise may cause an explosion, combustion, and internal acid leakage of the battery.

      MWD-QDT Battery Pack  
      Size unit: mm (GB1804-m if tolerance is not specified) For special connection requests, please consult GMB.

      MWD-QDT Battery Pack  MWD-QDT Battery Pack  MWD-QDT Battery Pack  

      ● do not short out the high-temperature batteries
      ● do not charge the 
      ● don't pin the batter
      ● do not squeeze the hi-temp battery
      ● pay attention to the battery anode and cathode
      ● The electrical equipment connection is correct
      ● do not disassemble the battery
      ● do not burn batteries
      ● do not mix old and new batteries
      ● do not heat the battery to more than 150°C
      ● do not directly weld the battery
      ● please use a battery with pre-welded pins or wires.

      high-temperature battery ER321270S complies with GB 8897.4-2008 technical requirements
    •  battery

    • 3.1.2 Capacitance discharge test Rated capacity test 
      The Rapid Discharge Capacity Test
      Put the battery in a test environment of 150for 12 hours, and discharge with 1200mA constant to the cut-off voltage of 2.0V, or load with 2900mΩ to discharge continuously until the battery voltage reaches the cut-off voltage of 2.0V. Storage and capacity 
       After store at 60for 28 days, the battery was placed in a dry place at 25±5for 4 hours, and the discharge capacity was tested according to the rated capacity test method.

      3.1.3 Anti-vibration performance 
      The battery is vibrated with simple harmonic vibration with an amplitude of 0.8mm (maximum double amplitude of 1.6mm). The initial vibration frequency is 15Hz-1000Hz-15Hz, the reciprocating time is 60m, the acceleration is 200m/s², and the vibration is one cycle.

      3.1.4 Quality consistency check 
      Quality consistency inspection is used to judge whether the battery can be qualified in the production process, to ensure the stability of product quality. For details, see GB/T8897.1 -- 2013 and GB8897.2 -- 2013 HL1910 circular special connector characteristics .

      3.2.1 Working conditions 
       high-temperature battery ER321270S is kept stable for 12 hours at 150, discharged with the standard discharge current of 200mA to the cut-off voltage of 2.0V, or the hig-temp battery was continuously discharged with a 17200mΩ load until the battery voltage reached the cut-off voltage of 2.0V. 
    Working temperature 
    Working pressure 
    Relative humidity
    40±2reach to 90-95% 
    10-1000Hz Acceleration 196m/s² 
    Short time 150℃ 
    Short time 100Mpa 
    40±2℃ reach to 90-95% 
    10-1000Hz Acceleration 196m/s² 
    • 3.2.2 Main Technology Parameters 

    Operation current 
    Contact resistance 
    Insulation resistance
    Dielectric Strength 
    Cycle life 
    Normal atmospheric conditions ≥1000MΩhigh temperature environment ≥200MΩAfter moisture test≥10MΩ
    250Vac after test voltage 500Vac
    1000 times 
    • 3.2.3 Structure drawing of HL1910 circular special connector 
      MWD-QDT Battery Pack  

      3.3 Basic dimensions and structure of battery packs 
      MWD-QDT Battery Pack  

      3.4 Battery pack basic electrical diagram 
      MWD-QDT Battery Pack  

      3.5 The Hi-temp Battery connector communication connection diagram 
      MWD-QDT Battery Pack  

      4. Hi-temp battery ER321270S' Security feature 

    Test method
    1Anti-vibration performance
    No explosion, no fire, no leakage

    2Leak-proof performance
    No explosion, no fire, no leakage

    3Insulation performance
    No explosion, no fire, no leakage

    4Continuity Test
    Smooth communication

    • 5. Testing 
    5.1 Test conditions and instruments on Hi-temp battery ER321270s
    • 5.1.1 Standard test environment: no special indication. The standard test conditions are: 
    Temperature: 120-150
    Relative humidity: 40±5%,
    Atmospheric pressure: 90±10Kpa 

    5.1.2 Test duration on  Hi-temp battery ER321270s
    • The test shall be carried out within one month after delivery

      5.1.3 Measuring instrument on High-temperature battery ER321270s
    1Voltage measurement with accuracy of not less than 0.5, accuracy of 0.01V, and internal resistance of more than 10MΩ voltage measurement.
    2The battery pack’s length is measured with a meter ruler with an accuracy of not less than 1mm, and the diameter is measured with a vernier caliper with an accuracy of not less than 0.02mm.

    • 5.2 Test method 
      5.2.1 Open voltage of  Hi-temp battery ER321270s
      Store the battery pack sample in the 5.1.1 standard environment. Then measure the voltage between the positive and negative electrodes of the battery pack at
      the same temperature using the voltmeter specified in 5.1.3 (1). The voltage should be 28.5-29V. (Any short circuit will cause a drop in the open circuit voltage of the battery or cause the overall safety of the battery pack to break off, resulting in no voltage)

      5.2.2 Load voltage of  Hi-temp battery ER321270S
      Place the battery pack in the 5.1.1 standard environment for 30min, discharge it with a 200mA load for 5min, and measure the voltage between the poles of the battery with the voltage specified in 5.1.3 (1). The voltage is not less than 20V. 
      Note: Do not load the new battery if you do not intend to use it immediately, as loading will cause the battery to discharge and thus reduce the battery life. 

      5.2.4 Leak-proof performance OF Hi-temp battery ER321270S
      The initial frequency of vibration is 10Hz-1000Hz-10Hz, the reciprocating time is 60min, the acceleration is 196m/s², and the vibration is one cycle. 

      5.2.5 Insulation performance  OF Hi-temp battery ER321270S
      Use a multimeter to point the 20MΩ digits of battery pack connectors 1-10 and the outer wall of the battery pack. Place a black marker on pin 1 of the battery pack and a red marker on pin 2, 3, 4, 5, 6, 7, 8, 9, and 10 to the outer wall. And so on to the outer wall. ≥20MΩ between each needle and outer wall.

    5.2.6 Continuity Test On Hi-temp battery ER321270S
    1. Connect the component detector at both ends of the battery, and the switches are placed in the "disconnect" position;
    2, put the multimeter on the ring ohm, measure the resistance between the "lower 1" and "upper 1" socket, read value should be less than 1 ohm, and can hear the buzzer; 
    3. Measure the resistance between "Up 2" and "down 2", and then the resistance between "Up 3" and "down 3", "up 4" and "down 4", "up 5" and "down 5", "up 6" and "down 6", "up 7" and "down 7", "up 8" and "down 8" should be less than 1 ohms, which is the conduction state;
    4. Note: Do not measure the resistance between 1 and 2 (there is battery voltage between them), otherwise it is potentially dangerous! 

    5.2.7 Overall dimensions  of Hi-temp battery ER321270S
    Under the test conditions of 5.1.1 standard test environment, the battery dimensions are tested using the test instrument in 5.1.3 (2) 

    6. Quality inspection on High-temperature  battery ER321270S
    Quality inspection is used to determine whether the battery pack can be qualified in the production process to ensure the stability of product quality. You can refer to GB/T8897.1-2013, and GB8897.2-2013 standards for execution. 

    7. Package labels 
    Based on the agreement between the supply and demand parties, packaging is in accordance with the prescribed method. The packing list of Hi-temp battery ER321270S, and the inspection report shall be placed in the packing case. The battery pack shall be affixed with a qualification certificate, warning, and user record, and the production date shall be marked on the tube of the battery pack. 

    MWD-QDT (150) hi-temp battery packs are manufactured with unique technology and have a certain degree of safety. However, as a lithium battery pack, it has a certain risk of electrical function or mechanical damage like other battery packs. During storage, transportation, and use of the MWD-QDT (150 °C) battery pack, the following requirements must be observed 

    8.1 Storage 
    Store the MWD-QDT (150) hi-temp battery pack in a cool, clean, and dry environment. The recommended temperature is 10to 30, and the relative humidity is less than or equal to 50%. Avoid contact with corrosive substances, and keep away from fire and heat sources higher than 150. Battery storage should strictly comply with the following requirements:
    ●Do not expose batteries to temperatures higher than 150℃。
    ●Store the battery pack in its original packaging to eliminate any external short circuit that may occur
    ●Do not store battery packs in conductive anti-static bags or foam.
    ●Do not place battery packs on conductive metal surfaces
    ●Do not stack batteries together

    8.2 Transportation of Hi-temp battery ER321270S
    The battery is in a state of full charge when leaving the factory, packed in boxes for the transportation process, should prevent violent vibration, impact, and extrusion, prevent the sun and rain, should use cars, trains, ships, aircraft and other ordinary means of transport. 

    8.3 Safety use of Hi-temp battery ER321270S
    Observe the following rules when using the MWD-QDT (150) battery pack to avoid improper operation. Causing the battery to inflate, produce leakage, serious rupture, and even explosion.
    ●Do not short circuit between the positive and negative electrodes of the battery pack, charge and reverse connection of the positive and negative electrodes
    ●Do not over-discharge, squeeze, puncture, or burn the battery
    ●Do not mix old and new battery packs with other types of battery packs
    ●Do not use the battery outside the permitted temperature range
    ●Read the instructions and warnings carefully before using the lithium battery pack, and perform operations strictly according to the regulations. Do not exceed the rated limit; 
    ●Before assembling the instrument, check the appearance of the battery pack to ensure that no damage may affect the performance of the battery pack. Corroded wires and connectors should not have any hidden dangers that may cause short circuit or open circuit, such as corrosion, dirt or damage. Once found, stop using the battery pack and notify professionals for treatment
    ●The plug protection cap should be properly kept for temporary use when the battery pack is not used or used batteries are recycled for storage and transportation
    ●The use of lithium battery packs should be recorded for continued use
    ●During the assembly of the lithium battery pack, never short circuit the two ends of the battery pack. The short circuit of the outlet wires and the plug point of the battery pack may lead to the internal fuse. If the battery pack is subjected to strong impact, vibration, and exceeds the specified temperature range, there may be faults in the battery
    ●The high-temperature battery shall be promptly removed from the instrument and returned to the manufacturer for processing in batches when it reaches the terminal voltage.

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