# Keystone 1042 (Component)
## Description
Battery Holder (Open) 18650 1 Cell SMD (SMT) Tab
The Keystone 1042 is a surface-mount battery holder designed by Keystone Electronics for 18650 cylindrical lithium-ion batteries. It is used to securely mount and electrically connect a single 18650 cell directly onto a PCB.
It is commonly found in battery-powered embedded systems, backup power modules, industrial controllers, and portable electronics where reliable and tool-less battery replacement is needed.
Key Features
Battery Type
Supports 1 × 18650 lithium-ion cell
Surface Mount (SMT) Design
Directly solderable to PCB for automated assembly
High-Temperature Nylon Housing
Suitable for reflow soldering processes
Secure Battery Retention
Holds the cell firmly in place while allowing easy insertion/removal
Tool-Free Battery Replacement
No tools required to install or remove the battery
Polarized Design
Prevents incorrect battery insertion
Durable Contacts
Typically tin-plated or gold-plated bronze contacts for reliable conductivity
Wide Temperature Range
Industrial-grade operation suitable for harsh environments
RoHS Compliant
Environmentally compliant construction
Typical Applications
Battery backup systems (RTC / memory backup)
IoT and embedded devices
Industrial control boards
Portable electronics
Data loggers and monitoring systems
Consumer battery-powered products
#Battery-Holder
## Component Details
- **Owner:** adrian95
- **Created:** 4/29/2026
- **Last Updated:** 4/29/2026
- **Visibility:** Public
- **Part Type:** Connector
- **License:** https://creativecommons.org/licenses/by/4.0/
- **Manufacturer Name:** Keystone Electronics
- **Manufacturer Part Number:** 1042
- **Datasheet URL:** https://www.keyelco.com/userAssets/file/K75p29.pdf
- **Used in:** 43 projects
## Distributor Pricing (qty 1)
*Pricing shown for quantity 1. For price breaks and other quantities, open in Flux.*
| Distributor | Unit Price (qty 1) | Stock |
|------------|--------------------|-------|
| [Arrow](https://www.arrow.com/en/products/1042/keystone-electronics.html?utm_currency=USD®ion=europe) | N/A | N/A |
| [Digi-Key](https://www.digikey.com/en/products/detail/keystone-electronics/1042/2745668) | $5.82 | 2.5K |
| [LCSC](https://www.lcsc.com/product-detail/C5249310.html) | $4.8173 | 104 |
| [Mouser](https://www.mouser.com/ProductDetail/Keystone-Electronics/1042?qs=%2F7TOpeL5Mz4qPdWi9tuLKw%3D%3D) | $5.32 | 3.3K |
| [TME](https://www.tme.com/us/en-us/katalog/?queryPhrase=KEYS1042) | N/A | N/A |
| [Verical](https://www.verical.com/pd/keystone-electronics-battery-holders-1042-4555562?utm_currency=USD) | N/A | N/A |
- **Part Type:** Connectors
- **Sub-Type:** Memory Connectors
- **Manufacturer:** Keystone
- **MPN:** 1042
- **Mount Type:** Surface Mount
- **Package / Case Code:** KEY-SMD
- **Pin Count:** 2
- **Compliance:** Rohs
## Pins
| Pin | Name | Type |
|-----|------|------|
| N | NEGATIVE | |
| P | POSITIVE | |
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*Generated from [https://www.flux.ai/adrian95/keystone-1042~gt9](https://www.flux.ai/adrian95/keystone-1042~gt9)*