CR2016
Direct Answer
A CR2016 coin cell is a 3.0V Lithium Manganese Dioxide battery measuring 20.0mm in diameter and 1.6mm in thickness with a nominal capacity of about 90 mAh. Its slim profile suits low-profile devices like slim remotes, LED tea lights, and thin calculators, distinguishing it from the thicker CR2032 of the same diameter.
Source: IEC 60086-3
Specs
| Diameter | 20.00 mm |
| Height | 1.60 mm |
| Nominal Voltage | 3.00 V |
| Nominal Capacity | 90 mAh |
| Chemistry | Lithium Manganese Dioxide |
Physical Fit Within the CR20xx Family
The CR2016 belongs to the same 20mm-diameter lithium coin cell family as the CR2025 and CR2032, all built to IEC 60086-3 and identified by matching first-two-digit diameter codes. What separates the three is thickness alone: 1.6mm for the CR2016, 2.5mm for the CR2025, and 3.2mm for the CR2032, with capacity roughly scaling alongside that extra internal volume -- the CR2016's approximately 90mAh capacity is well under half the CR2032's 225mAh despite sharing the same footprint.
Because battery holders are typically sized to grip one specific thickness through spring-loaded contacts, a CR2016 usually cannot substitute for a CR2025 or CR2032 even though it will physically slide into a wider slot -- the thinner cell simply won't make reliable contact.
Typical Applications
The CR2016's slim 1.6mm profile makes it the preferred choice wherever internal depth is at a premium: slim remote controls, LED tea lights and flameless candles, calculators, and small wearable trackers all commonly specify this size over the bulkier CR2032. Like other lithium coin cells, it offers a flat 3.0V discharge curve and a long shelf life thanks to lithium manganese dioxide chemistry's low self-discharge rate.
As with any button cell, the CR2016 poses a serious swallowing hazard for young children and pets, so it should be stored in child-resistant packaging and disposed of according to local battery-recycling rules rather than household trash.