Motorola IXNN4002A XTR446 Replacement Battery 4.8V 700mAh
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Motorola IXNN4002A XTR446 Replacement Battery 4.8V 700mAh - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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
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
⚠️ 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.
Motorola IXNN4002A XTR446 Replacement Battery 4.8V 700mAh - is backordered and will ship as soon as it is back in stock.
Voltage
4.8V
Amp
700mAh
Motorola XTR446 / TLKR Series — 4.8V Ni-MH Replacement Battery (IXNN4002A)
This is a 4.8V, 700mAh Ni-MH replacement battery for the Motorola XTR446, TLKR-T5, TLKR-T6, TLKR-T3, and compatible models. It replaces OEM part numbers IXNN4002A and IXNN4002B. The battery slots directly into the same battery compartment and connects to the same contact points as the original pack.
- XTR446 and TLKR platform fit: These models share the same 4.8V four-cell Ni-MH configuration, identical connector footprint, and the same BMS handshake threshold on the charger dock. One pack covers the entire range.
- Bench tested on actual hardware: We cycled this pack through full charge and discharge on the XTR446 platform. The BMS accepted the handshake on first insertion and held voltage through sustained PTT cycles without tripping overcurrent cutoff.
- First-cycle contact check on the TLKR dock: The TLKR charging dock uses spring-loaded pins that can misread a new pack as a fault if any oxidation is present on the contact strip. Before first charge, wipe the gold contacts on the battery with a dry cloth and reseat firmly — the dock needs a clean contact cycle to register the new pack and begin charging.
Why the XTR446 cuts out mid-transmission on a new battery
Ni-MH cells ship at storage voltage — typically 1.0–1.1V per cell, which puts a four-cell pack around 4.2–4.4V. When PTT is pressed, transmit current spikes sharply. If the pack hasn't been through a full charge cycle first, that low resting voltage can drop below the BMS cutoff threshold under the transmit load, causing the radio to cut out. This isn't a fault with the battery. Run a full charge before first use in a transmit-active environment and the cutout behaviour stops.
Bar indicator showing one fewer bar than expected after swapping to this pack
The XTR446 and TLKR series read battery level using simple voltage-threshold steps — each bar corresponds to a voltage band, not a precise capacity measurement. A new Ni-MH pack at storage voltage sits in the lower threshold band, so the indicator shows one or two bars even though the pack is not depleted. Charge the battery fully first. After a complete charge cycle, resting voltage rises to 5.6–5.8V and the indicator moves to the correct bar level.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Motorola
- Manufacturer: CS
- Series: Standard
- Color: White Grey
- Product Type: Ni-MH
- Battery Type: Ni-MH
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My XTR446 cuts out every time I press the talk button — is this battery defective?
It's not defective. Ni-MH cells ship at storage voltage, and the transmit current spike on PTT is enough to pull a low-resting pack below the BMS cutoff threshold. We saw the same behaviour on the bench — it stopped entirely after a full charge cycle. Charge the battery completely before first use and the cutout won't return.
The TLKR-T5 charging dock is showing a fault LED and won't start charging the new pack — what's wrong?
The TLKR dock uses spring-loaded pins that require clean contact to register a new BMS handshake. If the gold contact strip on the battery has any residue or oxidation from storage, the dock reads it as a fault and won't initiate charging. Remove the battery, wipe the contact strip with a dry cloth, and reseat it firmly. The fault LED should clear and charging should begin within 10 seconds of reseating.
The radio ran fine on the old battery but now drops to weak transmission signal mid-shift on the new one — why?
This is voltage sag under sustained RF output. Ni-MH cells that haven't completed a full break-in cycle have higher internal impedance, which causes voltage to drop under the load of continuous transmit. That drop can push the radio into reduced TX power mode before the pack is actually depleted. Run two full charge-discharge cycles on the new pack — internal impedance drops after conditioning and the voltage holds steady through extended transmit periods.
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