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Watch battery · lithium coin

CR1620 battery

CR1620. 161 × 2 mm1 lithium coin, 3 V1. Equivalents: 5009LC (2 codes in 3 code systems, full table); 19 calibres, modules and models in our base take it.

Sources checked · How we source numbers
CR1620: drawing to scaleCR1620: diameter 16 mm, height 2 mm.Ø 16−+2CR1620
CR1620: face and edge view to scale, from the datasheet sizesDrawing from data, not a photo · mm
Diameter
16 mm1
Height
2 mm1
Nominal voltage
3 V1
IEC designation
CR16201

CR1620 equivalents

The same cell under 2 names. Any of them fits where CR1620 does.

Code systemCR1620
IECCR16201
EnergizerCR16201
ANSI/NEDA5009LC1

Size and chemistry

Diameter
16 mm1
Height
2 mm1
Nominal voltage
3 V1
Chemistry
Lithium / Manganese Dioxide (Li/MnO2)1
IEC designation
CR16201
1.6CR16162CR1620
Every 16 mm lithium coin size with a page, edge view to scale. Only the height tells them apart.
Show CR1620 at true size (1:1)
1:1 · not calibrated: sizes are approximate
CR1620: drawing to scaleCR1620: diameter 16 mm, height 2 mm.Ø 16−+2CR1620
01020304050

Cell types in this size

CR1620

Primary cell · Lithium / Manganese Dioxide (Li/MnO2)1

3 codes in our sources name this cell type.

Capacity by manufacturer

Energizer CR1620CR1620

81 mAh1capacity to 2.0 V cut-offDatasheet ↗

Can I use another cell instead of CR1620?

Verdicts follow our swap rules from the datasheet size, voltage and cell type.

Check any other pair

  • Use instead of CR1620

    CR1616

    No

    No: CR1616 is 0.4 mm thinner than CR1620.

    Same 16 mm diameter, but CR1616 is 1.6 mm against 2 mm: the contact spring may not reach it.

    CR1616: 16 mm3 × 1.6 mm3, 3 V3

    Draw both cells in the swap checker

What uses CR1620

19 calibres, modules and models in our base name this size.

Seiko calibres18[4]

Seiko's battery chart gives 1.5–3 years of battery life for these calibres. Seiko, Pulsar, Lorus and Alba calibres share the chart.

  • L250
  • L251
  • S602
  • S650
  • W170
  • W173
  • W190
  • W240
All 18 calibres
  • W510
  • W511
  • W512
  • W605
  • P104
  • P106
  • P108
  • P114
  • P116
  • P118

Watches with a page1

Warnings from the makers

Keep away from children

“(1) KEEP OUT OF REACH OF CHILDREN. Swallowing may lead to”[1]
“serious injury or death in as little as 2 hours due to chemical burns and”[1]
“Keep batteries out of reach of small children. Should a child swallow a battery, consult a physician immediately.”[5]

Questions

What is the CR1620 battery equivalent?

5009LC name the same 16 × 2 mm lithium coin cell as CR1620. Any maker's cell under one of these codes fits.

Is CR1616 the same as CR1620?

No. CR1616 is 0.4 mm thinner than CR1620. Same 16 mm diameter, but CR1616 is 1.6 mm against 2 mm: the contact spring may not reach it.

What watches use the CR1620 battery?

In our base: 18 Seiko calibres (L250, L251, S602, S650…). The full lists are on this page, with the brand tables they come from.

How long does a CR1620 battery last in a watch?

Seiko's battery chart gives 1.5 to 3 years for its 18 calibres on this cell, 2 years most often. Life depends on the calibre's current draw, not on the cell alone.

Seiko battery chart[4]

Sources

Documents checked · Report a wrong number

  1. 1Energizer Holdings, Inc. — Product datasheet ENERGIZER CR1620 · pdf · read
  2. 2watchbattery.co.uk — Watch Battery Cross Reference Table · html · read
  3. 3Energizer Holdings, Inc. — Product datasheet ENERGIZER CR1616 · pdf · read
  4. 4Seiko Watch Corporation (service information) — Value Checking List / Battery No. Cross-reference Chart · pdf · read
  5. 5Panasonic Energy Co., Ltd. — Safety Warnings and Precautions (AAA4000COL13) · pdf · read