Lawmate PV-1000 BA-4400 Remote Control Replacement Battery 3.7V 4900mAh

Lawmate PV-1000 Series — 3.7V Li-Polymer Replacement Battery (BA-4400)

This 3.7V, 4900mAh lithium-polymer battery replaces the BA-4400 in the Lawmate PV-1000, PV-1000T, PV-1000 Touch, and PV-1000 Neo wireless remote control units. The slim 102.80 x 68.20 x 6.20mm LiPo pack fits the original battery compartment without modification. When the original cell degrades, IR output drops and operational range shrinks — this replacement restores the unit to full spec.

• PV-1000 series compatibility: The PV-1000, PV-1000T, PV-1000 Touch, and PV-1000 Neo all share the same battery bay dimensions, voltage rail, and connector orientation. One BA-4400 format cell serves all four variants without any adapter or wiring change.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the PV-1000 platform. The BMS responded correctly to full charge termination, held the 3.7V nominal rail steady under IR LED load, and tripped the low-voltage cutoff at the expected threshold without hard locking the unit.
• LiPo storage voltage: If you're storing the remote for more than a few weeks, don't leave the cell fully charged. LiPo cells held at 100% charge for extended periods accelerate electrolyte degradation — store at around 3.85V (roughly 50–60% charge) to slow capacity loss between uses.

Why the PV-1000 remote loses range before the battery reads "dead"

LiPo cells don't fail suddenly — they fade. As internal resistance climbs with age, the cell can no longer sustain the current spike the IR LED needs at the moment of transmission. The voltage under load drops below the LED's forward voltage threshold, so the signal weakens or drops out entirely. The battery indicator may still show partial charge because resting voltage looks fine. If the remote works only at close range, the cell is past its usable life regardless of what the charge display says.

PV-1000 remote completely unresponsive after fitting a new battery

This is almost always a polarity issue. The PV-1000 battery connector is keyed, but the flat LiPo pouch can seat in the bay either way if forced. Check the positive and negative pad markings on the battery against the bay contacts before assuming the cell is faulty. If the unit still won't power on with confirmed correct orientation, hold the power button for 10 seconds to clear any residual charge in the control board's capacitors, then reconnect the battery and retry.