CR1620 5 Pack Lithium Button Cells 70mAh 3V - Long-Life Key Fob

In this review of the CR1620 5 Pack, the bottom line is simple: these compact 3V lithium cells are aimed at anyone who needs reliable replacement batteries for small electronics, especially car key fobs and watches. The reviewer found the biggest reason to buy is the claimed high real capacity and long shelf life - CELEWELL advertises 70mAh capacity and a five-year warranty with no leakage, which is exactly the kind of reassurance people want when swapping batteries in devices that are awkward to access.

Key Features

• High capacity: Each CR1620 cell is rated at 70mAh, giving more runtime than many ordinary small cells and making them better for devices that drain slowly over months.
• Safer construction: CELEWELL highlights safety certifications (ISO9001, UL, CE, RoHS, UN38.3) which suggest consistent manufacturing and reduced risk of leakage or failure.
• Five-year warranty: The brand warranty and marked manufacture/warranty date on the card make it easy to verify coverage and expect up to five years free from leakage issues.
• Multiple compatibility: These CR1620 cells are compatible with many equivalent model numbers (DL1620, ECR1620, BR1620, etc.), so they fit a wide range of small devices without guessing.
• Wide device use: Suitable for car key fobs, RKE remotes, watches, 3D glasses, trackers, motherboards, calculators and LED lights, so one pack covers many household needs.

Who It's For

The CR1620 5 Pack is best for car owners who need a reliable battery for key fobs, and for people who maintain multiple small devices like watches, 3D glasses or tracking tags. Anyone who prefers batteries with identified manufacture dates and a brand warranty will appreciate the five-year no-leak promise and the product markings on each card.

People who require unusually long runtimes for high-drain specialty equipment should look at larger or rechargeable options instead, since these are small coin cells intended for low-power electronics rather than continuous high current use.

Pros & Cons

Pros

• Good value: buyers report the pack offers reliable performance for the price compared to generic cells.
• Durable and leak-resistant: the five-year warranty and safety certifications give confidence in long shelf life.
• Fits many devices: interchangeability with common model numbers reduces risk of ordering the wrong size.

Cons

• Variable lifespan reports: while many users found the batteries reliable, some opinions vary on how long a cell lasted in everyday use, so individual runtime may differ.

Specifications

Cell type	CR1620 lithium coin cell
Voltage	3V
Capacity	70mAh (rated)
Pack quantity	5 cells
Warranty	5-year CELEWELL brand warranty (date marked on card)
Certifications	ISO9001, UL, CE, RoHS, UN38.3
Compatible codes	1620, DL1620, ECR1620, BR1620 and equivalents

Our Verdict

For routine replacements in key fobs, watches and small household electronics, this CR1620 5 Pack offers a sensible balance of capacity, safety certification and a reassuring five-year warranty. It represents good value for anyone who wants marked manufacture dates and low risk of leakage, though actual runtime will depend on device draw.

Frequently Asked Questions

Are these batteries safe for watches and key fobs?
Yes. The cells carry multiple safety certifications and the brand emphasizes no leakage for five years, making them suitable for watches and remote keyless entry devices.

Will these fit my car key?
Most likely yes, if your key uses the CR1620 (16mm diameter, 2.0mm height); the pack is compatible with common equivalent model numbers like DL1620 and BR1620.

How long will a cell last in a key fob?
Battery life varies by device use, but the higher 70mAh capacity should last several months to years in low-drain key fobs; some customers report reliable durability while run time can differ by usage.