Model: BA-4400 SLIM
The Lawmate BA-4400 SLIM is a 4400mAh extended battery designed to significantly increase the operating time of your Lawmate PV500 EVO, ECO, or LITE digital video recorders. This 3.7V lithium-ion battery pack provides double the capacity of standard batteries, extending recording time by up to 6 hours. Its slim design ensures minimal added bulk to your device.
The BA-4400 SLIM battery is designed to seamlessly integrate with your Lawmate PV500 series digital video recorder. It features a clip-on mechanism for secure attachment and provides a reliable power source for extended operation.

Image 1: Lawmate BA-4400 SLIM Extended Battery. This image shows the compact design of the 4400mAh battery pack, ready for attachment to a compatible Lawmate PV500 series DVR.
The BA-4400 SLIM battery is charged while it is attached to the PV500 series DVR and the DVR is connected to its power adapter. Ensure you use the original charger provided with your PV500 DVR.
Once the BA-4400 SLIM battery is fully charged and securely attached, it will automatically provide extended power to your PV500 series DVR. Simply operate your DVR as usual, enjoying the increased recording duration.
| Problem | Possible Cause | Solution |
|---|---|---|
| Battery not charging. | Loose connection; faulty charger/cable; battery issue. | Ensure secure connection to DVR and power source. Try a different outlet. If possible, test with another compatible charger. |
| DVR not powering on with battery. | Battery not charged; battery not properly attached; DVR issue. | Ensure battery is fully charged. Re-attach the battery securely. Test the DVR with its original battery if available. |
| Reduced operating time. | Battery degradation (normal wear); extreme operating temperatures. | Ensure battery is fully charged before use. Operate the DVR within recommended temperature ranges. Consider replacing the battery if capacity is significantly reduced. |
| Feature | Detail |
|---|---|
| Model Number | BA-4400 SLIM |
| Battery Type | Lithium Ion |
| Battery Capacity | 4400 mAh |
| Voltage | 3.7V |
| Compatibility | Lawmate PV500 EVO, ECO, LITE Digital Video Recorders |
| Extended Recording Time | Up to 6 hours (depending on DVR model and usage) |
For warranty information and technical support, please refer to the documentation provided with your Lawmate PV500 series DVR or visit the official Lawmate website. Keep your purchase receipt as proof of purchase for warranty claims.
![]() |
LawMate PV-1000AHD Dual Cam Input 1080p Wi-Fi DVR Quick Guide This quick guide provides essential information for the LawMate PV-1000AHD Dual Cam Input 1080p Wi-Fi DVR. It details package contents, battery charging instructions, LED indicator meanings, connection illustrations, and FCC compliance statements. |
![]() |
PV-500Neo Pro Palm-sized Wi-Fi DVR User Manual User manual for the LawMate PV-500Neo Pro Palm-sized Wi-Fi DVR, detailing its features, operation, specifications, and setup for recording and data management. |
![]() |
PV-900 Portable Digital Recorder Operation Manual Operation manual for the LawMate PV-900 Portable Digital Recorder, detailing setup, charging, recording settings, and special operating modes like Spy Mode and Phone Dead Mode. |
![]() |
PV-RC200HDi 1080p Key Fob IP DVR User Manual User manual for the LawMate PV-RC200HDi 1080p Key Fob IP DVR, covering names and parts, package content, charging, formatting memory cards, downloading files, operation, renaming Wi-Fi SSID, and specifications. |
![]() |
PV-RC400UW 4K Ultra HD Key Fob Wi-Fi DVR Quick Guide A quick guide for the PV-RC400UW 4K Ultra HD Key Fob Wi-Fi DVR, covering names and parts, package content, charging, formatting, operation, downloading files, and specifications. |
![]() |
LawMate PV-WT20W 1080p Smartwatch DVR Quick Guide This quick guide provides essential information for the LawMate PV-WT20W 1080p Smartwatch DVR, including device parts, package contents, charging instructions, LED indicator meanings, operation, specifications, and file management. |