Overview
The Panasonic BR‑2/3AG / BR17335 is a cylindrical lithium battery widely used in Programmable Logic Controllers (PLCs), CNC machines, and other industrial automation systems. It provides stable 3V output with high energy density, ensuring reliable memory backup and RTC (real‑time clock) operation. Moreover, its long shelf life and wide operating temperature range make it suitable for harsh industrial environments.
This battery is often supplied with flying leads or connectors for easy integration into PLC units from manufacturers such as Mitsubishi, Siemens, and Omron.
Technical Data
| Parameter | Specification |
|---|---|
| Model Numbers | BR‑2/3AG, BR17335 |
| Dimensions | 17 mm × 33.5 mm |
| Weight | 0.15kg |
| Operating Temperature | ‑40 °C to +85 °C |
Typical Applications
-
PLC memory backup to retain programs during power loss
-
CNC machines for parameter storage and RTC support
-
Robotics and automation systems requiring reliable long‑term backup
-
Industrial control equipment exposed to wide temperature ranges
For example, Mitsubishi PLCs often use the BR‑2/3AG battery to maintain memory integrity, while Siemens and Omron controllers rely on it for RTC and parameter retention.
FAQ
Q1: What is the difference between BR‑2/3AG and BR17335?
A1: They are equivalent designations for the same Panasonic 3V lithium battery.
Q2: How long does the battery last in PLC applications?
A2: Typically 5–10 years depending on usage and environment.
Q3: Is it rechargeable?
A3: No, it is a primary lithium battery and must be replaced when depleted.
Q4: What connectors are available?
A4: It is supplied with flying leads or specific connectors depending on PLC brand compatibility.
Q5: Which industries benefit most from this battery?
A5: Manufacturing, oil and gas, chemical processing, and any automation system requiring reliable memory backup.
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