External image of coin type lithium manganese dioxide rechargeable batteries

The coin type lithium manganese dioxide rechargeable battery is a small, lightweight rechargeable battery. This battery employs specially treated manganese dioxide for the positive material and a lithium-aluminum compound for the negative material. A specially formulated organic electrolyte is also used, yielding excellent discharge characteristics with low self-discharge.

Features

Approx. 2.5 V operating voltage

The operating voltage is about twice that of nickel cadmium rechargeable batteries. Displays a high discharge voltage of 2.8 V when at 10% of nominal capacity (depth of discharge is 10% or less), when charged at 3.0 to 3.3 V.

Superior charge/discharge characteristics

Achieves 1,000 cycles of discharging to 10% of nominal capacity (Depth of discharge = 10%). The total discharge capacity is quite high at 100 times nominal capacity. (shipped fully charged)

Wide -20 deg. C to 60 deg. C operating temperature range

Demonstrates stable operating voltage in temperatures as low as -20 deg. C and as high as 60 deg. C.

Low self-discharge rate and superior leakage resistance

Self-discharge at 20 deg. C is no more than 2% per year. Supplies a nominal capacity of about 95% even when stored at 20 deg. C for roughly five years (according to accelerated test conducted by Maxell). And since organic electrolyte is used, the battery has superior leakage resistance.

Excellent floating characteristics

A specially formulated organic electrolyte is employed to provide stable discharge characteristics even if charged for a year at 3.3 V at 20 deg. C (according to accelerated test conducted by Maxell).

Excellent high rate discharge characteristics

About Maxell ML batteries

Maxell ML (lithium manganese dioxide rechargeable) batteries are available only for equipment manufacturers as a built-in part. Therefore, Maxell does not supply these batteries for replacement directly to users of equipment with these batteries. When built-in ML batteries need to be replaced, please contact your equipment manufacturer. If you are planning to use Maxell ML batteries in your equipment as a built-in part, please contact Maxell.

UL Recognized Components

The coin type lithium manganese dioxide rechargeable battery is a UL recognized component. (Technician Replaceable)

Recognized models: ML2032, ML2016H

Certification number: MH12568

Applications

RTC/Memory Backup

  • Desktop PCs
  • Video cameras
  • Medical instrument
  • FA Instruments
  • Communication devides

Main Power Source

  • Rechargeable watches (solar watches)
  • Combination with energy harvesting (e.g. solar cell)

Specifications

     
Model ML2016H ML2032
Nominal voltage (V) 3 3
Nominal capacity (mAh)*1 30 65
Nominal discharge current (µA) 200 200
Charge/Discharge cycle lifetimeDepth of
discharge = 10%
1500 1000
Depth of
discharge = 100%
40 30
Operating temperature range (deg. C) -20 to +60
Dimensions*2Diameter (mm) 20 20
Height (mm) 1.6 3.2
Weight (g)*2 1.7 3.0
Data sheets - pdf
Diagram of with Terminals - pdf
Warnings pdf
  • Nominal capacity indicates duration until the voltage drops to 2.0 V when discharged at a nominal discharge current at 20 deg. C.
  • Dimensions and weight are for the battery itself, but may vary depending on terminal specifications and other factors.
  • Data and dimensions are not guaranteed. For further details, please contact your nearest Maxell office.
  • Contents on this website are subject to change without notice.

Construction

ml construction

Principle and Reactions

The coin type lithium manganese dioxide rechargeable battery is a 3 V battery using specially treated manganese dioxide for the positive mateiral, a lithium-aluminum compound for the negative material and a specially formulated organic electrolyte.

 

ml principle and reactions

Discharge Characteristics

Discharge Characteristics graph

 

Charge/Discharge Cycle Performance

Charge/Discharge Cycle Performance graph

 

Temperature Characteristics

Temperature Characteristics graph

 

Strage Characteristics

Strage Characteristics graph

 

Safety precautions

If misused, this battery may deform, leak (the liquid inside the battery may leak to the outside), generate heat, explode, or ignite.
Since such misuse may cause injury or equipment failure, please be sure to read and observe [Warnings and Cautions].

Q901:
[Glossary of Battery Terms] : Primary battery
Q902:
[Glossary of Battery Terms] : Rechargeable battery (Secondary battery)
Q903:
[Glossary of Battery Terms] : Open circuit voltage (OCV)
Q904:
[Glossary of Battery Terms] : Closed circuit voltage (CCV)
Q905:
[Glossary of Battery Terms] : Nominal voltage
Q906:
[Glossary of Battery Terms] : Load
Q907:
[Glossary of Battery Terms] : End-point voltage (End voltage, Cutoff voltage, Final voltage)
Q908:
[Glossary of Battery Terms] : Internal resistance
Q909:
[Glossary of Battery Terms] : Discharge
Q910:
[Glossary of Battery Terms] : Over discharge
Q911:
[Glossary of Battery Terms] : Self discharge
Q912:
[Glossary of Battery Terms] : Discharge characteristics (Discharge curve)
Q913:
[Glossary of Battery Terms] : Charge
Q914:
[Glossary of Battery Terms] : Polarization
Q915:
[Glossary of Battery Terms] : Duration time (Duration period)
Q916:
[Glossary of Battery Terms] : Capacity
Q917:
[Glossary of Battery Terms] : Energy Density
Q923:
[Glossary of Battery Terms] : Initial test
Q924:
[Glossary of Battery Terms] : Storage
Q925:
[Glossary of Battery Terms] : Test after storage
Q926:
[Glossary of Battery Terms] : Aging
Q927:
[Glossary of Battery Terms] : Expiry date
Q928:
[Glossary of Battery Terms] : Active material
Q918:
[Glossary of Battery Terms] : Electrolyte
Q919:
[Glossary of Battery Terms] : Utilization factor
Q920:
[Glossary of Battery Terms] : Leakage resistance
Q921:
[Glossary of Battery Terms] : Short circuit current
Q922:
[Glossary of Battery Terms] : Internal short circuit

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