Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com
WELCOME5
BatteryWeb

Vertex Standard EVX-Z61 Replacement Battery 7.4V 2200mAh

Up to 20% off
New arrival
From $40.99 USD $50.99
Shipping calculated at checkout.
Fits Vertex Standard EVX-Z61 and EVX-Z69 radios; replaces OEM part FNB-V143LI.
7.4V at 2200mAh gives this pack enough capacity for a full shift on the EVX platform without midday swaps.
Connector slides straight into the radio battery slot with a single locking tab; orientation is keyed to prevent reversal.
We bench-tested this cell on a Vertex Standard charger dock; the BMS accepted the pack on first insertion without fault codes.
If the charger dock shows a fault LED after inserting this battery, remove it, wipe the gold contact strip dry, and reseat firmly — the Vertex platform requires a clean contact cycle to accept the new BMS handshake before charging begins.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
WECARE5

Please Confirm Delivery Timeline

Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
4.8
★★★★★
★★★★★
Average Customer Rating
By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe
✦

Check that your old battery model number and device model to match our description. This makes sure they work together.

✦

We ship your order same day if you buy it before 4 PM EST.

Warranty

Let customers speak for us

from 11 reviews

Product is exactly as described and arrived quickly

Robert Jones
Rocket ES4-12 Compatible Replacement Battery

It took a bit longer than expected, likely due to the holiday season, but that was understandable. So far, the battery seems to be working well!

Linda M.
MGE UPS Systems Pulsar EX 1500RT Compatible Replacement Battery By Bright Way

Excellent substitute for the original, appearing to be the perfect replacement.

Alberto J.
APC SMART-UPS RT SURTA3000RMXL3U UPS High Performance Replacement Battery Set

It was what i was looking for. Support is fast

Jaswal
WAHEGURUG - RADHASWAMI

Fast service

Mark Casias
BatteryWeb

Perfect fit

Mark Casias
STX20L-BS Battery for Harley Softail FLS FLST 1991-2017 High Performance

Works Perfectly!!

Ben Benson
Invacare 220 Scooter High Performance Medical Replacement Battery Set

Send Your Battery Photo

Expert Technician Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.

POST YOUR BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

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

Vertex Standard EVX-Z61 / EVX-Z69 — 7.4V Li-ion Replacement Battery (FNB-V143LI)

This is a 7.4V, 2200mAh lithium-ion battery pack built to the FNB-V143LI specification. It fits the Vertex Standard EVX-Z61 and EVX-Z69 portable two-way radios. Voltage and connector match the OEM pack exactly, and the BMS communicates correctly with the radio's charge management circuit.

  • EVX-Z61 and EVX-Z69 platform compatibility: Both radios share the same 7.4V battery bay, contact geometry, and BMS handshake protocol — one pack covers both units without modification.
  • Bench tested on actual hardware: We cycled this pack through full charge and discharge on the EVX-Z61 platform. The BMS held correct over-current cutoff during simulated PTT transmit spikes and re-engaged cleanly after cooldown.
  • First insertion into the charger dock: If the dock LED flashes fault on first seating, remove the pack and wipe the gold contact strip with a dry cloth, then reseat firmly. The Vertex Standard platform requires a clean contact cycle to complete the BMS handshake before charging begins.

Bar indicator showing one fewer bar than expected on a new FNB-V143LI

New lithium-ion cells ship at storage voltage — typically around 3.6–3.7V per cell, not full charge. The EVX-Z61 reads pack voltage against fixed thresholds to display its bar indicator, so a cell at storage voltage will show one or two bars short of full even though the pack is not faulty. Charge the pack fully in the dock before drawing any conclusion about capacity. After a complete charge cycle, the indicator should read at the top threshold for a 7.4V pack.

EVX-Z61 cuts out mid-transmission on a new pack

When PTT is pressed, the radio draws a sharp current spike to drive the RF output stage — this can briefly exceed the BMS overcurrent threshold if the pack is cold or has not yet completed a full charge cycle. The BMS trips the output and the radio drops mid-transmission. Let the pack reach a full charge first, and allow it to reach ambient temperature before use in cold environments. If the cutout persists after a full charge cycle, check that the contact strip is fully seated — a high-resistance contact will amplify the voltage drop under transmit load and trigger the same BMS response.

Compatible Models

EVX-Z61 EVX-Z69

Replaces Part Numbers

FNB-V143LI

Technical Specifications

Voltage7.4V
Amp Hours2200mAh
Capacity2200mAh
Rate16.28Wh
Net Weight121.4g /4.28 oz
Gross Weight191.4g /6.75 oz
Approximate Weight191.4g /6.75 oz
Dimension 99.24 x 54.36 x 24.20mm

Product Highlights

  • Brand: Vertex Standard
  • 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

My EVX-Z61 charger dock is showing a fault LED and never clears — is the new FNB-V143LI pack defective?

Not necessarily. A new pack arriving below the dock's acceptance voltage threshold will trigger a fault LED that doesn't self-clear. Remove the battery, wipe the gold contact strip clean with a dry cloth, and reseat it firmly. If the fault persists, the pack voltage may be below the dock's recovery floor — use a compatible wall charger at 8.4V to bring it above the acceptance threshold before returning it to the dock.

The EVX-Z61 drops to reduced TX power partway through a long shift — what causes that on a new battery?

This is voltage sag under sustained RF output load. As transmit cycles accumulate, cell voltage dips under the sustained current draw, and the radio's power management circuit steps down TX output to protect the RF stage. It is not a faulty pack — it is the BMS and radio firmware doing their job. Allow the pack a full rest cycle between heavy-use shifts, and ensure the contact strip is clean so resistance at the terminal does not add to the effective voltage drop.

The FNB-V143LI pack was stored for a few months unused and the EVX-Z61 won't recognise it at all now — how do I recover it?

Extended storage can push individual cells below the BMS re-initialisation threshold, causing the BMS to lock out the pack entirely. Place the pack in the dock and leave it undisturbed for 15–20 minutes — some Vertex Standard chargers will attempt a trickle pre-charge to bring the pack above the recovery floor. If the dock shows no response, check that cell voltage at the contact terminals reads at least 6.0V with a multimeter; below that, the BMS is in deep-discharge lockout and the pack should be replaced.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Related Products

BearCom BC250D Replacement Battery, 7.4V, 2200mAh, Li-ion 1

Engineered for Performance. Built to Last.

Check out our top-rated selection of reliable products built to last. We offer high-quality options that deliver consistent performance for all your needs.

Our Collections