About this replacement
Motorola XTS3000 / XTS5000 Series — 7.5V Ni-MH Replacement Battery (RNN4007AR)
This 7.5V, 2000mAh Ni-MH battery replaces the original pack in Motorola XTS3000, XTS3500, XTS5000, and Tetra MTP200 portable radios. It cross-references OEM part numbers RNN4007AR, NTN8923, NTN8294, NTN8293, NTN8297, NNTN7453A, NNTN4435B, and BP8299MHUC. Capacity figures are sourced from product data — 2000mAh, 15Wh.
- XTS-series platform fit: The XTS3000 through XTS5000 line shares a common battery bay geometry, contact pin layout, and BMS handshake protocol. All models on this listing use the same 7.5V three-cell Ni-MH configuration, which is why a single part number spans that entire radio family.
- Bench tested on actual hardware: We cycled this pack through full charge and transmit load on an XTS3000 body. The BMS accepted the charge sequence without fault. Transmit current draw during PTT held within spec — no overcurrent trip during the test.
- First insertion into the charger dock: If the dock shows a fault LED on first insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The XTS charger platform requires a clean contact cycle to complete the BMS handshake before charging will begin.
Why the XTS3000 cuts out mid-transmission on a freshly inserted pack
When PTT is pressed, the XTS3000 draws a sharp current spike to power the RF output stage. A new Ni-MH cell stored at low voltage has higher internal impedance than a conditioned cell. That impedance causes a momentary voltage drop large enough to trigger the radio's undervoltage protection. Running one full charge-discharge cycle drops cell impedance and brings resting voltage up to the 7.4–7.5V range where the radio transmits cleanly.
Bar indicator showing one fewer bar than expected after fitting a new pack
The XTS series uses fixed voltage-threshold steps to drive the bar indicator — it is not a fuel gauge. A new cell shipped at storage voltage (typically 6.8–7.0V) will sit below the top threshold and display one bar short. This is normal and not a capacity fault. Charge the pack fully before judging the bar count — once voltage climbs above the upper threshold, the display will step up to show the correct level.