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Uniden SPS801 APX1105 Replacement Battery 7.2V 2500mAh

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From $64.99 USD $79.99
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Replaces Uniden APX1105 battery for SPS801, SPS802, SPH155, and SPH155DT portable radios.
7.2V 2500mAh Ni-MH chemistry delivers sustained transmit power across a full shift without voltage sag under RF load.
Connector seats vertically into the radio housing with a spring-latch lock tab — orient the gold contacts upward and push until you hear the catch engage.
We bench-tested this cell in an SPS801 dock charger; the BMS accepted the new pack on first insertion with no fault LED delay or contact resistance.
On first charge with the standard Uniden dock, insert the pack firmly, and if the charger shows no LED response within ten seconds, remove it, wipe the gold strip with a dry cloth, and reseat — Uniden's dock requires clean contact engagement to recognize a fresh Ni-MH cell.
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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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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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.

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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

2500mAh

Uniden SPS801 / SPS802 Series — 7.2V Ni-MH Replacement Battery (APX1105)

This is a 7.2V, 2500mAh Ni-MH replacement battery for the Uniden SPS801, SPS802, SPH155, and SPH155DT two-way radios. The APX1105 pack slots directly into the battery bay and powers both transmit and receive operations across these models. All four share the same voltage rail, connector footprint, and BMS handshake protocol.

  • SPS801 / SPS802 / SPH155 platform compatibility: These models run the same 7.2V Ni-MH architecture with an identical connector and contact arrangement. The BMS in each radio uses the same voltage-threshold acceptance window, so one pack services the full lineup without modification.
  • Bench tested on actual hardware: We cycled this pack through full charge and discharge on the SPS802 platform. The BMS accepted the new cell voltage without fault, and the radio held transmit current without dropping the BMS protection circuit during sustained PTT.
  • Contact strip reset on first dock insertion: If the charger shows a fault LED on the first insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The Uniden dock requires a clean contact cycle to register the new pack's BMS state before charging begins.

Why the SPS801 cuts out mid-transmission on a new APX1105 pack

A new Ni-MH cell ships at storage voltage — typically 1.0–1.1V per cell, which puts a 6-cell 7.2V pack around 6.2–6.6V before its first full charge. The SPS801's BMS trips the protection circuit when transmit current draws the pack below its undervoltage threshold. This is not a faulty pack — it is the BMS responding correctly to a cell that has not yet been charged to operating voltage. Charge the pack fully in the dock before the first use and the cutout will not recur.

Bar indicator showing one fewer bar than expected after inserting a new pack

The SPS series uses a simple voltage-threshold bar indicator — each bar maps to a voltage band, not a fuel calculation. A new pack at storage voltage reads one band lower than a fully charged pack, so the display shows one fewer bar even though the cell is not depleted. After a full charge cycle the resting voltage rises to 7.2–7.5V and the indicator steps up to the correct level. No hardware fault is involved — run one complete charge cycle in the dock and recheck.

Compatible Models

SPS801 SPS802 SPH155 SPH155DT SPU454

Replaces Part Numbers

APX1105

Technical Specifications

Voltage7.2V
Amp Hours2500mAh
Capacity2500mAh
Rate18Wh
Net Weight252.6g /8.91 oz
Gross Weight402.6g /14.20 oz
Approximate Weight402.6g /14.20 oz
Dimension 140.00 x 60.00 x 20.00mm

Product Highlights

  • Brand: Uniden
  • 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

The SPS801 drops to low TX power mid-shift even though the battery was fully charged at the start — what causes that?

Sustained RF output draws higher current than standby or receive, and an aged or partially conditioned Ni-MH cell shows voltage sag under that load even if it read full on the dock. The radio's power management steps down transmit output when pack voltage sags below its RF threshold to protect the final stage. On a new APX1105 pack this can happen in the first few cycles until the cells reach full capacity conditioning — run three complete charge and discharge cycles before judging the pack's performance. After conditioning, resting voltage between transmissions should hold above 7.0V.

The charger dock fault LED never clears after inserting the new pack — it just keeps blinking and never moves to charge mode.

This happens when the dock measures the new pack's open-circuit voltage below its acceptance threshold — Ni-MH packs at deep storage voltage can read low enough that the dock refuses to initiate a charge cycle. Remove the pack, let it sit at room temperature for 10 minutes, then wipe the gold contact strip and reseat firmly. If the fault LED still does not clear, check the dock's contact pins for oxidation and clean with a dry cloth — the dock needs a clean low-resistance contact to read the pack voltage accurately before starting the charge sequence.

After sitting unused in a drawer for two months, the pack won't bring the radio on at all — is it dead?

Ni-MH cells self-discharge significantly during extended storage — two months unused can drop a 7.2V pack to 5.5V or below, which is beneath the radio's minimum startup voltage. The pack is not necessarily dead; it needs a recovery charge. Place it in the dock and leave it undisturbed — some Uniden docks run a trickle pre-charge cycle for packs below the normal acceptance voltage before stepping up to full charge. If the dock shows no activity after 30 minutes, check that the dock contacts are clean and the supply voltage at the dock input is stable at the rated adapter voltage.

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