Motorola CP110 PMNN6035 Replacement Battery 7.4V 1100mAh

Motorola CP110 / EP150 / A10 / A12 — 7.4V Li-ion Replacement Battery (PMNN6035)

This 7.4V 1100mAh Li-ion pack replaces the OEM PMNN6035 battery in the Motorola CP110, EP150, A10, and A12 portable two-way radios. It slots into the same battery compartment and uses the same contact configuration as the original. Capacity figure is 1100mAh — match that against any pack you are replacing before ordering.

• CP110 / EP150 / A10 / A12 platform fit: These models share the same battery bay geometry, contact pitch, and BMS handshake protocol. One pack covers the full group — no adapter or wiring change needed.
• Bench tested on actual hardware: We ran this pack through transmit-cycle loads on the CP110 platform. The BMS held steady through repeated PTT bursts without tripping the overcurrent threshold, and the charger dock accepted the pack and progressed to charge-complete without fault.
• 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 platform requires a clean contact cycle to accept the BMS handshake before charging begins.

Why the CP110 cuts out mid-transmission on a freshly inserted pack

New Li-ion cells ship at storage voltage — typically 3.6–3.7V per cell, giving roughly 7.2–7.4V total. The CP110's transmit circuit draws a sharp current spike the moment PTT is pressed. If the pack has not gone through at least one full charge cycle, that spike can pull cell voltage below the BMS overcurrent threshold momentarily, causing the radio to cut audio or drop TX entirely. The fix is straightforward: charge the pack fully before the first shift. After one complete charge cycle, the BMS settles and transmit behaviour normalises.

Bar indicator showing fewer bars than expected straight out of the charger

The CP110 reads battery state through simple voltage thresholds — it has no coulomb-counting chip. A new pack that has just come off its first charge may sit at 8.3–8.4V rather than the 8.6–8.7V a well-conditioned cell reaches after several cycles. That lower resting voltage maps to one fewer bar on the indicator even though the pack is not faulty. Run two or three full charge-and-use cycles and the resting voltage will rise to where the radio displays the correct bar count.