Allflex RS320 Replacement Battery 9.6V 700mAh Ni-MH
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Allflex RS320 Replacement Battery 9.6V 700mAh Ni-MH - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
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Delivery and Shipping
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Disclaimer
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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Allflex RS320 Replacement Battery 9.6V 700mAh Ni-MH - is backordered and will ship as soon as it is back in stock.
Voltage
9.6V
Amp
700mAh
Allflex RS320 / PW320 — 9.6V Ni-MH Replacement Battery (51FE0421)
This is a 9.6V, 700mAh Ni-MH replacement battery for the Allflex RS320 and PW320 handheld livestock identification scanners. It replaces OEM part number 51FE0421. The RS320 and PW320 share the same voltage rail, connector, and BMS handshake, so one pack covers both readers.
- RS320 and PW320 compatibility: Both models run the same 9.6V power architecture and use an identical dock connector and BMS communication protocol. The same cell configuration satisfies both devices without any modification.
- Bench tested on actual hardware: We cycled this pack through repeated scan-trigger bursts on the RS320 and monitored BMS response at varying charge states. The protection circuit held voltage within spec across simulated multi-hour tagging sessions without false cutoffs.
- First-install charge on the RS320: Before taking the scanner out to the yards, seat the new pack in the cradle and run a full charge cycle. Ni-MH cells at partial charge are most vulnerable to inrush current from the scan trigger — a full cell prevents BMS trips on the first tag read of the shift.
Why the RS320 cradle shows a charging error on a new pack
Allflex cradles use contact resistance as part of their charge-initiation check. A new pack straight from packaging often has oxidation or residue on the gold-plated terminals. If the cradle reads contact resistance above its threshold, it flags a fault and suspends charging. Wipe the pack's terminal strip with a dry cloth before seating it. Once contacts are clean, reinsert the pack firmly — the cradle LED should shift from error to charging within a few seconds.
Scanner not reading ear tags after battery swap
The RS320's RFID reader module requires a stable voltage above approximately 8.5V to power the antenna and decode tag responses. If the replacement pack is shipped at a low state of charge, the cell voltage under load can sag below that threshold — the scanner powers on but the reader circuit never fully initialises. The fix is straightforward: charge the pack fully before first use, then retest. A fully charged 9.6V Ni-MH pack holds enough headroom to sustain the antenna inrush on the first scan trigger.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Allflex
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Ni-MH
- Battery Type: Ni-MH
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My RS320 powers on fine but stops reading tags partway through a session — what's happening?
Ni-MH cells drop voltage sharply once they pass roughly 80% depth of discharge, and the RS320's RFID module is the first circuit to lose function when pack voltage sags. The scan trigger and antenna draw combined pull the cell below the reader's minimum operating threshold before the low-battery indicator fires. Charge the pack fully in the cradle and check that the terminal contacts are clean — dirty contacts add resistance that accelerates that voltage sag under load.
The RS320 cradle is showing a fault light and won't charge the new battery — how do I fix it?
Allflex cradles test contact resistance before starting a charge cycle, and a new pack often has light oxidation on the terminal strip that pushes resistance above the cradle's threshold. Remove the pack, wipe the gold contacts firmly with a dry cloth, and reseat it with firm downward pressure. If the fault light clears within a few seconds of reseating, the contact issue is resolved and the charge cycle will proceed normally.
The new battery feels noticeably warm after a full shift of ear-tag scanning — is that normal?
Ni-MH chemistry generates more heat during charge and discharge than lithium-based cells, and the RS320's compact housing limits airflow around the pack. Sustained scan bursts across a long tagging session — combined with the RFID antenna firing on every read — produce continuous draw that raises cell temperature. Warmth to the touch at end of shift is within normal range for Ni-MH under that load. If the pack becomes too hot to hold comfortably, let it cool for 15 minutes before recharging, and check that the cradle vents are clear of debris.
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