Battery Holder (Open) Multiple (20700, 21700) 1 Cell Solder Lug The Keystone 1121 is a PCB-mount cylindrical battery holder manufactured by Keystone Electronics, designed to hold one large-format lithium-ion cell, specifically 20700 or 21700 battery sizes.

It features an open-frame holder design with solder lug (through-hole) terminals, allowing secure mechanical mounting and reliable electrical connection to a PCB. This type of holder is commonly used in high-capacity battery-powered systems where replaceable cylindrical cells are required. Key Features Battery Compatibility Supports 20700 and 21700 cylindrical Li-ion cells Designed for single-cell (1S) configurations Mechanical & Mounting Through-hole PCB mounting Solder lug terminals for strong electrical and mechanical connection Open-style holder for easy battery insertion/removal Construction Metal contacts for low resistance and durability Designed to securely retain larger cylindrical batteries Physical Characteristics Height above PCB: approx. 17.27 mm Part of Keystone 1100 series holders Typical Applications Battery-powered embedded systems Portable power devices Industrial electronics High-capacity IoT or energy storage modules #holder