About this replacement
Motorola MT700 / HT220 Series — 14.4V Ni-MH Replacement Battery (NLN4462A)
This is a 14.4V, 500mAh Ni-MH replacement battery for the Motorola MT700, HT210, HT220, BA200N, and related handhelds. It replaces OEM part numbers NLN4462A and NLN4462B. The pack slots into the same battery bay and connects through the same contact strip as the original.
- MT700 / HT220 platform fit: These models share a common 14.4V battery bay, contact layout, and BMS handshake protocol. One pack covers the full group — no adapter or modification needed.
- Bench tested on actual hardware: We cycled this pack through charge and transmit loads on the MT700 platform. The BMS accepted the charge cycle cleanly and held the voltage rail stable under PTT bursts without triggering overcurrent cutoff.
- First-insertion contact check: If the charger dock shows a fault LED on first insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The Motorola dock requires a clean contact cycle before it accepts the new BMS handshake and begins charging.
Why the MT700 cuts out mid-transmission on a new NLN4462A pack
Ni-MH cells ship at storage voltage — typically 30–50% state of charge — not at full capacity. When PTT is pressed, transmit current spikes sharply. If the cell hasn't completed at least one full charge cycle, that spike can pull cell voltage below the BMS cutoff threshold, tripping a temporary shutdown. The fix is a full charge before first use in the field. After one complete charge cycle, the BMS calibrates to the pack's actual capacity and handles transmit surges without dropping out.
Bar indicator showing fewer bars than expected after inserting a new pack
The MT700 and HT220 series use a voltage-threshold bar indicator — each bar corresponds to a voltage band, not a percentage read by a fuel gauge chip. A new Ni-MH pack at storage voltage reads lower than a freshly charged pack, so the radio may display one or two bars on insertion. This is not a fault with the battery. Charge the pack fully first — resting voltage should reach approximately 16.8V at end of charge — and the bar indicator will reflect the correct state.