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Yaesu FNB-V130LI VX-351 Replacement Battery 7.4V 2200mAh

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From $38.99 USD $47.99
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Fits Yaesu VX-351, VX-354, and VX-359 portables; replaces OEM FNB-V130LI and FNB-V130LI-UNI cells.
7.4V, 2200mAh lithium-ion pack delivers sustained transmit current without voltage sag during extended field shifts.
Gold contact strip slides into radio battery slot with positive terminal forward; locking tab seats flush against housing.
We bench-tested against a VX-354 charger dock; BMS accepted charge cycle on first insertion with zero fault LED.
On first use with the VX-351, if the charger dock shows a fault light, remove the battery, wipe the contact strip dry, and reseat firmly—Vertex radios need a clean contact cycle to accept the new BMS handshake.
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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.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ 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

7.4V

Amp

2200mAh

Yaesu VX-351 / VX-354 / VX-359 — 7.4V Li-ion Replacement Battery (FNB-V130LI)

This is a 7.4V, 2200mAh Li-ion battery replacing the Yaesu FNB-V130LI in the VX-351, VX-354, and VX-359 portable transceivers. These are compact land mobile radios used in field operations, emergency communications, and amateur radio. Voltage and cell count match the original pack exactly.

  • VX-351 / VX-354 / VX-359 platform fit: All three models share the same battery bay dimensions, contact pin layout, and 7.4V two-cell BMS handshake. One pack covers the full VX-35x series without modification or adapter.
  • Bench tested on actual hardware: We ran this pack through full charge and discharge cycles on a VX-351. The BMS accepted the charger dock handshake on first insertion and held voltage within spec across sustained PTT cycles without tripping overcurrent protection.
  • First-insertion contact check: If the Yaesu charger dock shows a fault LED after inserting this pack for the first time, remove the battery and wipe the gold contact strip with a dry cloth before reseating. The dock requires a clean contact surface to complete the BMS handshake before it will begin charging.

Why the VX-351 cuts out mid-transmission on a new FNB-V130LI

A new Li-ion cell ships at storage voltage — typically around 3.7V per cell, or roughly 7.4V total — not at full charge. When you key up on a fresh-from-the-box pack, the transmit current draw can pull cell voltage below the BMS cutoff threshold before a full charge cycle has been completed. The radio interprets this as a depleted pack and drops output or shuts down. Charge the battery fully in the dock before first transmission use — the BMS needs the cells topped to 8.4V to handle the TX current spike without tripping.

Bar indicator showing one fewer bar than expected on a new pack

The VX-351 reads battery level using voltage thresholds, not a fuel gauge chip. A new pack at storage voltage sits below the top threshold, so the radio displays one or two bars even though the cells are not depleted. This is not a fault with the battery or the radio. Put the pack through one complete charge cycle in the dock until the charge LED goes green, then reinsert — the indicator will reflect the correct level once cell voltage reaches 8.4V.

Compatible Models

VX-351 VX-354 VX-359

Replaces Part Numbers

FNB-V130LI FNB-V130LI-UNI

Technical Specifications

Voltage7.4V
Amp Hours2200mAh
Capacity2200mAh
Rate16.28Wh
Net Weight124g /4.37 oz
Gross Weight194g /6.84 oz
Approximate Weight194g /6.84 oz
Dimension 99.00 x 56.60 x 22.20 mm

Product Highlights

  • Brand: Yaesu
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The charger dock fault LED keeps blinking and never starts charging — is the pack dead?

The dock fault LED usually means the pack voltage dropped below the dock's acceptance threshold during storage, not that the pack is faulty. Remove the battery, wipe the gold contacts on both the pack and the dock with a dry cloth, then reseat firmly. If the LED still blinks, leave the pack seated for 10–15 minutes — some Yaesu docks will attempt a trickle pre-charge to bring the cell voltage up to the acceptance threshold before switching to normal charge mode.

Radio drops to reduced TX power partway through a shift even though the bar indicator shows charge remaining

This is voltage sag under sustained RF output, not a capacity issue. When you transmit repeatedly over a long period, cell voltage temporarily dips below the threshold for full TX power even if the cells still have capacity left. The radio reduces output to protect the BMS from an overcurrent trip. Let the radio sit off-key for 30–60 seconds — voltage will recover and full TX power will resume. If sag happens on short PTT cycles with a recently charged pack, check that the contact pins in the battery bay are clean and making full contact.

Pack inserts correctly but the dock never advances to a full-charge green LED — stays on charge indefinitely

A dock that charges indefinitely without going green is usually reading higher-than-expected cell impedance on a new pack, causing it to extend the charge cycle. This is common on the first one or two charges and is not a fault. Run the pack through a full charge without removing it mid-cycle — allow the dock to terminate on its own. After one complete cycle, cell impedance normalises and the dock will terminate at the correct point, confirmed by the green LED at approximately 8.4V.

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