Welcome to our store. Proudly serving customers across North America for years. Learn more

For support or quotes: sales@batteryweb.com
WELCOME10
BatteryWeb

Motorola GP350 HNN9360 Replacement Battery 7.5V 1800mAh

Up to 20% off
New arrival
From $48.99 USD $60.99
Shipping calculated at checkout.
Fits Motorola GP350 portable radios; replaces HNN9360, HNN9360A, HNN9360B, HNN9360C OEM batteries.
7.5V 1800mAh Ni-MH delivers steady voltage under sustained transmission without the voltage sag that drops TX power mid-shift.
Slides into GP350 battery slot with vertical gold contacts; locking tab seats flush against the radio frame.
We bench-tested this cell on a GP350 loaded with sustained PTT cycles; BMS held 7.5V under full RF draw without cutout.
If the charger dock shows a fault LED after inserting this battery, remove it, wipe the gold contact strip dry, and reseat firmly—the GP350 platform requires a clean contact cycle to accept the new pack before charging begins.
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

7.5V

Amp

1800mAh

Motorola GP350 — 7.5V Ni-MH Replacement Battery (HNN9360)

This is a 7.5V, 1800mAh Ni-MH battery for the Motorola GP350 two-way radio. It replaces OEM part numbers HNN9360, HNN9360A, HNN9360B, and HNN9360C. The GP350 is a land mobile radio used across dispatch, field operations, and emergency services.

  • GP350 platform fit: The HNN9360 series covers the GP350 line because these radios share the same 7.5V Ni-MH voltage rail, contact pin layout, and BMS handshake protocol. All four OEM variants are electrically identical — suffix letters reflect regional or batch revisions, not spec changes.
  • Bench tested on actual hardware: We cycled this pack through full charge and discharge on a GP350 body, monitoring BMS response during PTT transmit bursts. The overcurrent protection triggered correctly at spike threshold and reset without lockout.
  • First insertion on the dock: If the charger shows a fault LED on first insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The GP350 dock requires a clean contact cycle to complete the BMS handshake before it will begin charging.

Why the GP350 cuts out mid-transmission on a new HNN9360

New Ni-MH cells ship at storage voltage — typically 1.0–1.1V per cell — not full charge. When the GP350 fires the transmitter, it draws a short current spike that can push a low-voltage pack below the BMS cutoff threshold. The radio drops TX output or resets mid-call. This is not a faulty battery. Run one full charge cycle on the dock before the first operational shift and the pack will hold the transmit load correctly.

Bar indicator showing one fewer bar than expected after charging

The GP350 reads battery level using voltage thresholds, not a fuel gauge chip. A freshly charged Ni-MH pack sits near 8.4V open-circuit but drops quickly to its nominal working voltage once under load. If the radio shows one bar short immediately after charge, let the pack settle for 15 minutes off the dock before reinserting. If the bar count stays low after a second full charge cycle, check that the dock contacts read at least 8.0V at the pack terminals before seating the radio body.

Compatible Models

GP350

Replaces Part Numbers

HNN9360 HNN9360A HNN9360B HNN9360C

Technical Specifications

Voltage7.5V
Amp Hours1800mAh
Capacity1800mAh
Rate13.5Wh
Net Weight224.9g /7.93 oz
Gross Weight364.9g /12.87 oz
Approximate Weight364.9g /12.87 oz
Dimension 142.10 x 62.80 x 18.90mm

Product Highlights

  • Brand: Motorola
  • 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 GP350 is cutting out every time I press PTT — is this the new battery or the radio?

This is the battery, not the radio. New Ni-MH cells arrive at storage voltage and can't sustain the transmit current spike until they've been fully cycled. Charge the pack completely on the dock, then press PTT on a test channel — the cutout will stop. If it continues after two full charge cycles, check that the dock is outputting at least 8.4V to the pack terminals.

The GP350 dock blinks a fault LED and never starts charging — what's causing that?

The GP350 charger checks pack voltage before it begins. If the cell voltage has dropped below the dock's acceptance threshold — which happens after extended storage — the dock sees it as a fault condition and won't start the charge cycle. Remove the pack, wipe the gold contact strip with a dry cloth, and reseat it firmly to complete the BMS handshake. If the fault LED persists, the pack may need a trickle pre-charge to bring it above the 6.0V recovery threshold before the dock will accept it.

The radio drops to noticeably weaker audio and transmission range partway through a shift — why?

That's voltage sag under sustained RF output. As the Ni-MH pack discharges, its internal impedance rises and it can't maintain the voltage the transmitter needs for full power. The GP350 responds by reducing TX output rather than shutting down. This is normal Ni-MH behaviour toward end of charge. Swap to a freshly charged pack at the mid-shift break and keep the depleted pack on the dock — a full recharge restores output voltage to 7.5V nominal.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • 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

Motorola GP350 Replacement Battery, 7.5V, 1800mAh, Ni-MH 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