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Vertex Standard FNB-V106 VX-231 Compatible Battery 7.2V 1200mAh

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From $37.99 USD $46.99
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Fits Vertex Standard VX-231, VX-228, VX-230, VX-231L portables; replaces OEM FNB-V106 and AAG57X002 battery packs.
7.2V 1200mAh Ni-MH delivers the voltage and capacity Vertex portables need for full RF transmission power across the shift.
Connector slides straight down into the radio's battery well; locking tab seats flush when fully inserted and locked.
We bench tested the pack on a VX-231 transmitter; cell voltage held steady under sustained PTT and accepted full charge on first dock insertion.
On first charge in a Vertex charger dock, remove and reseat the battery once if the dock shows a fault light—the radio platform needs a clean contact cycle to accept the new cell before charging proceeds.
Extended delivery time

Available by SPECIAL ORDER. Delivery for this product typically takes 2 weeks.

Extra Discount: As a thank you for your patience, enjoy an extra 5% off your order
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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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⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

7.2V

Amp

1200mAh

Vertex Standard VX-231 / VX-228 Series — 7.2V Ni-MH Replacement Battery (FNB-V106)

This 7.2V 1200mAh Ni-MH battery replaces the FNB-V106 (also listed as AAG57X002) in Vertex Standard portable two-way radios. It fits the VX-228, VX-230, VX-231, and VX-231L — handheld FM transceivers used in commercial, industrial, and public safety communications. Voltage and connector match OEM spec exactly.

  • VX-228 / VX-230 / VX-231 / VX-231L platform fit: These four models share the same battery bay dimensions, 7.2V rail, and latch geometry. One pack covers all four radios without modification or adapters.
  • Bench tested on actual hardware: We cycled this pack through PTT transmit bursts on the VX-231 platform. The BMS held current within spec during sustained TX loads and released cleanly between transmit events without tripping overcurrent cutoff.
  • First-insertion contact cycle: If the charger dock shows a fault LED on the first insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The Vertex Standard dock requires a clean contact cycle to complete the BMS handshake before charging begins.

Why the VX-231 cuts out mid-transmission on a freshly inserted battery

Ni-MH cells ship at storage voltage — typically 1.1–1.2V per cell, which puts a six-cell 7.2V pack around 6.6–7.0V on arrival. The VX-231's BMS monitors transmit current draw and can trip if cell voltage sags sharply the moment RF output kicks in. This is not a faulty pack — it's a cold cell under sudden high-draw load. Run the pack through one full charge cycle before heavy PTT use and the voltage sag narrows significantly.

Bar indicator showing one fewer bar than expected after a full charge

The VX-231 uses a simple voltage-threshold bar display — each bar maps to a fixed voltage band, not a capacity percentage. A new Ni-MH pack fresh off the charger may read one bar low because Ni-MH cells need two to three charge-discharge cycles before resting voltage stabilises at the top threshold. This is not a capacity defect. Cycle the pack twice through normal use and a full dock charge — resting voltage will settle above the top-bar threshold, typically around 7.8–8.0V post-charge.

Compatible Models

VX-231 VX-228 VX-230 VX-231L

Replaces Part Numbers

FNB-V106 AAG57X002

Technical Specifications

Voltage7.2V
Amp Hours1200mAh
Capacity1200mAh
Rate8.64Wh
Net Weight164g /5.78 oz
Gross Weight234g /8.25 oz
Approximate Weight234g /8.25 oz
Dimension 89.10 x 60.40 x 22.50 mm

Product Highlights

  • Brand: Vertex Standard
  • 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 VX-231 cuts out or breaks squelch mid-transmission even with the new battery seated — what's happening?

Ni-MH cells arrive at storage voltage, and the VX-231's transmit current draw can spike sharply enough to sag that low starting voltage past the BMS cutoff threshold. This is a voltage-floor issue on a cold pack, not a defective cell. Charge the pack fully before first PTT use — one complete dock cycle raises resting voltage high enough to absorb the transmit surge without dropout.

The charger dock is showing a fault LED and won't start charging — I've already tried two sockets.

The Vertex Standard dock checks contact resistance before it begins the charge cycle. If the gold contact strip on the pack or the dock pins picked up any oil or debris during shipping, the handshake fails and the fault LED latches. Remove the pack, wipe the gold contacts on both the battery and the dock with a dry cloth, and reseat firmly. The LED should clear and charging should begin within 10 seconds of a clean reseat.

The radio drops to noticeably weaker TX output during long shifts — the battery is only a few weeks old.

Sustained RF output over a long shift draws continuous high current, and Ni-MH voltage sags under that load more than it does during short PTT bursts. If the pack hasn't completed at least two to three full charge-discharge cycles, internal impedance is still elevated and voltage sag under load is steeper than it will be once the cells are broken in. Run three full cycles — full charge, normal shift use to depletion, full recharge — and check TX output again; voltage sag under sustained load typically drops by 0.2–0.3V after break-in.

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