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Motorola HNN8148 Radius P110 Replacement Battery 7.5V 1800mAh

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From $44.99 USD $55.99
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Fits Motorola Radius P110 two-way radio, replaces HNN8148, HNN8148A, HNN8148B.
7.5V 1800mAh nickel-metal hydride cell delivers full transmit power on sustained RF output.
Slide-on connector seats vertically into radio battery slot with no locking tab required.
We bench-tested the pack on a Radius P110 test unit; BMS accepted charge at first insertion with no fault delay.
If the charger dock shows a fault LED on first insertion, remove the battery, wipe the gold contact strip with a dry cloth, and reseat firmly — the Motorola platform requires a clean contact cycle to accept the new pack 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.

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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
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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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🔹 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.

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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

7.5V

Amp

1800mAh

Motorola Radius P110 — 7.5V Ni-MH Replacement Battery (HNN8148)

This is a 7.5V, 1800mAh nickel-metal hydride battery for the Motorola Radius P110 two-way radio. It replaces OEM part numbers HNN8148, HNN8148A, and HNN8148B. The cell format, connector, and BMS profile match the original P110 battery specification.

  • Radius P110 platform fit: The P110 shares a single battery format across its production run. Voltage rail stays at 7.5V and the connector pinout is consistent across HNN8148 variants A and B, so all three OEM part numbers draw from the same physical pack specification.
  • Bench tested on actual hardware: We cycled this pack through transmit loads on the P110 platform. The BMS handled the PTT current spike without tripping, and the cell voltage held steady through repeated key-up events at full RF output.
  • First insertion into the P110 charger dock: If the dock LED blinks fault on first insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The P110 charger requires a clean contact cycle to complete the BMS handshake before it accepts the pack for charging.

Why the Radius P110 cuts out mid-transmission on a new Ni-MH pack

Ni-MH cells ship at partial storage voltage — typically around 6.8V to 7.0V on a fresh pack. The P110's BMS treats a sharp voltage dip during the transmit current surge as a brownout condition and cuts the RF stage. This is not a faulty battery. Run one or two full charge cycles before heavy use and the cells will hold voltage more firmly under transmit load. After conditioning, PTT cutouts during normal use should stop.

Bar indicator showing one fewer bar than expected after fitting a new HNN8148

The P110 reads voltage thresholds to drive its bar indicator — it has no fuel gauge chip. A new Ni-MH pack at storage voltage sits below the threshold for a full bar display, so the radio shows one bar short even with a healthy cell inside. Charge the pack fully before reading the indicator. After a complete charge cycle, resting voltage should sit at or above 7.5V and the bar display will reflect actual cell state.

Compatible Models

Radius P110

Replaces Part Numbers

HNN8148 HNN8148A HNN8148B

Technical Specifications

Voltage7.5V
Amp Hours1800mAh
Capacity1800mAh
Rate13.5Wh
Net Weight214.3g /7.56 oz
Gross Weight354.3g /12.50 oz
Approximate Weight354.3g /12.50 oz
Dimension 152.00 x 56.00 x 19.00mm

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 Radius P110 charger dock is blinking a fault LED and won't start charging the new HNN8148 — what's causing it?

The dock fault LED almost always means the pack voltage is below the charger's acceptance threshold, or the gold contact strip isn't making clean contact. Remove the battery, wipe the contacts on both the pack and the dock with a dry cloth, and reseat firmly. If the fault clears, the charger will begin the charge cycle normally. If the pack has been in storage for an extended period and voltage has dropped below roughly 6.0V, the dock may need a trickle pre-charge cycle to bring the cells up before it accepts a full charge.

The P110 drops to noticeably weaker audio and reduced TX output partway through a shift — is the battery failing?

This is voltage sag under sustained RF output, not a failed battery. Ni-MH cells show steeper voltage drop than lithium under continuous high-draw loads, and the P110 steps down transmit power when pack voltage falls below its operating floor. Check that the pack has completed at least two full charge cycles — unconditioned Ni-MH cells sag harder than broken-in ones. If sag persists after conditioning, measure resting voltage after a full charge; it should read at or above 7.5V.

The new HNN8148 pack was inserted correctly but the charger dock never shows a full-charge green light — it just stays on amber indefinitely.

An Ni-MH charger uses delta-V detection to identify peak charge — a small voltage drop signals a full cell. If the cell impedance is higher than the charger expects on a new pack, the delta-V signal is weaker and the dock can miss the termination point, holding on amber. Let the charge run for a full cycle regardless. On the second charge, the cells will have gone through one conditioning pass and delta-V termination will trigger correctly, ending at green.

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