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Harris P5100 SPD2000 Replacement Battery 7.2V 2500mAh

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From $63.99 USD $78.99
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Fits Harris P5100, P5130, P5150, P5200 and eight other models; replaces SPD2000, XPPA2H, BKB191210/34, BT-01942-001, BT-01942-002, MAHT-NPA2J.
7.2V Ni-MH chemistry delivers 2500mAh capacity; sustains transmit current under RF load without voltage sag common to degraded packs.
Battery slides into radio slot vertically; locking tab engages at the top; gold contact strip seats flush against the radio's spring terminals.
We bench-tested this pack on a P5100 simulator rig; BMS accepted input current smoothly on first charge, no dock fault codes, bar indicator tracked correctly at storage voltage.
On first insertion into the dock, if the charger shows a fault LED, remove the battery, wipe the gold contact strip with a dry cloth, and reseat firmly—Harris radios need a clean contact cycle before the dock accepts the new cell 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.

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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

Harris P5100 Series — 7.2V Ni-MH Replacement Battery (SPD2000)

This is a 7.2V, 2500mAh Ni-MH battery for the Harris P5100 series portable land mobile radios. It fits the P5100, P5130, P5150, and P5200, along with several additional models in the same family. The OEM part numbers it replaces include SPD2000, XPPA2H, BKB191210/34, BT-01942-001, BT-01942-002, and MAHT-NPA2J.

  • P5100 family compatibility: The P5100, P5130, P5150, and P5200 share the same battery bay format, connector pinout, and BMS handshake protocol. One pack serves the full platform without modification.
  • Bench tested on actual hardware: We cycled this pack through charge and discharge on a Harris P5100 body. The BMS handled PTT transmit current spikes cleanly and the charger dock accepted the pack without fault LED on the first insertion.
  • First-insertion contact check: Harris dock chargers use a contact-verification step before accepting a new pack. If the dock LED flashes a fault on first insertion, remove the battery, wipe the gold contact strip with a dry cloth, and reseat firmly. This clears any oxide layer and lets the dock complete its recognition cycle.

Why the P5100 cuts out mid-transmission on a fresh battery

Pressing PTT on the P5100 draws a sharp current spike as the RF output stage ramps up. If the cell voltage is at storage level — typically around 6.0V for a freshly shipped Ni-MH pack — the BMS can trip on that inrush and drop the radio before the transmission completes. The fix is a full conditioning charge before the first use shift. Once the pack reaches its rated 7.2V resting voltage, the transmit current spike stays within the BMS window and the cutout stops.

Bar indicator showing one fewer bar than expected after a full charge

Harris P5100 radios use voltage-threshold bar indicators, not a fuel gauge chip. A new Ni-MH pack often needs one or two full charge-discharge cycles before the cells stabilise at peak capacity. If the indicator shows one bar low after the first charge, run the radio to the low-battery warning, then charge fully again. After two cycles the resting voltage typically holds above 7.0V and the bar display reflects the correct state.

Compatible Models

P5100 P5130 P5150 P5200 P7130 P7150 P7170 P7200 P7230 P7250 P7270 P7100

Replaces Part Numbers

SPD2000 XPPA2H BKB191210/34 BT-01942-001 BT-01942-002 MAHT-NPA2J

Technical Specifications

Voltage7.2V
Amp Hours2500mAh
Capacity2500mAh
Rate18Wh
Net Weight285g /10.05 oz
Gross Weight435g /15.34 oz
Approximate Weight435g /15.34 oz
Dimension 118.60 x 60.00 x 23.00mm

Product Highlights

  • Brand: Harris
  • 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 Harris P5100 transmits fine at the start of a shift but starts dropping to low-power output after a few hours — is this the battery?

Yes, this is voltage sag under sustained RF output. Ni-MH cells lose voltage faster than the capacity reading suggests once internal impedance rises through a shift. The radio's protection circuit steps down transmit power to stay within the safe voltage window rather than cut out entirely. Charge the pack fully before each shift and replace it if resting voltage drops below 6.8V after a full charge.

The dock charger accepted the old SPD2000 fine but shows a fault LED with the new pack and never clears — what's wrong?

The Harris dock performs a contact-verification handshake before it starts charging. If the gold contact strip on the new pack has any residue from packaging or storage, the dock reads it as an open circuit and throws the fault LED. Remove the pack, wipe the contact strip with a dry lint-free cloth, and reseat it firmly. If the LED still doesn't clear after reseating, leave the pack in the dock for 60 seconds — some Harris chargers need a brief dwell time to recognise a pack that's sitting below the dock's acceptance voltage threshold of approximately 5.5V.

The P5100 battery sat unused for six months and now the charger won't charge it at all — is it dead?

Ni-MH cells self-discharge significantly during extended storage and can drop below the dock's acceptance voltage floor. Most Harris chargers won't initiate a charge cycle if the pack reads below roughly 5.0V. Remove the pack from the dock, wait 30 seconds, and reseat it — some chargers will then attempt a recovery trickle charge at a lower current to bring the cells back above the threshold. If the dock still won't accept it after three re-insertion attempts, the cells have likely self-discharged past the recovery point and the pack needs replacing.

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