L621 Battery (SR621SW/AG1) Sourcing Guide

The L621 battery, widely recognized by its equivalents SR621SW, AG1, and 364, is a critical component in the micro-battery market, which is projected to reach approximately $74.69 billion by 2035 with a CAGR of 5.95%. Businessresearchinsights Ntchip This growth is driven by the surge in wearable technology, medical diagnostics, and "Right-to-Repair" legislation boosting the aftermarket replacement sector. Fortunebusinessinsights

Market Trends & Consumer Insights

* Aesthetic Shift: Consumer demand is pivoting toward ultra-slim, high-precision devices, making the L621’s small form factor (6.8mm x 2.1mm) increasingly relevant for smart rings and medical patches. Mordorintelligence

* Performance Expectation: There is a distinct consumer preference for Silver Oxide (SR621SW) over Alkaline (AG1) in the premium segment due to its 1.55V stable discharge and 5-7 year shelf life, whereas Alkaline is relegated to low-cost toys. Ic-Components Bettlink

* Sourcing Dynamics: Wholesale prices for these cells have reached extreme competitiveness, with bulk orders starting as low as $0.01 per unit, primarily sourced from manufacturing hubs like Shenzhen and Jinhua. Alibaba Alibaba

Product Identification Guide

Understanding the labeling is crucial for correct sourcing, as the same size (6.8 x 2.1mm) uses different naming conventions based on chemistry:

Chemistry	Common Labels	Key Characteristics
Silver Oxide	SR621SW, 364, 363, V364	1.55V, high capacity (~20mAh), stable voltage for precision watches.
Alkaline	AG1, LR621, LR60, 164	1.50V, budget-friendly, suitable for devices with low precision needs.

Ic-Components Ntchip Chipsmall

The following sourcing list provides a variety of L621 battery options, including both alkaline and silver oxide versions from leading wholesale suppliers.

L621 Battery

Overview

Market Trends & Consumer Insights

Product Identification Guide

Sr621sw 364 Ag1 L621 Battery Button Cell 1.5v 1.55v Bulk Wholesale

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Sources & References