{"product_id":"digital-ally-dvm-500pl-replacement-battery-37v-1100mah-li-ion","title":"Digital Ally DVM-500PL Replacement Battery 3.7V 1100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDigital Ally DVM-500PL Series — 3.7V Li-ion Replacement Battery (135-0036)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V 1100mAh Li-ion replacement cell for the Digital Ally DVM-500PL in-vehicle camera system, cross-referenced to OEM part number 135-0036. It also fits the DVM-750, DV-500ULTRA, and DVB-500 units. All four models share the same voltage rail, physical footprint, and connector pinout.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDVM-500PL, DVM-750, DV-500ULTRA, DVB-500 platform:\u003c\/strong\u003e\n    These units use the same 3.7V cell format and BMS handshake across the line. The shared connector and protection circuit spec means one cell covers the full group without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge passes on the DVM-500PL platform. The BMS accepted the cell without fault codes, and protection cutoffs triggered correctly at both ends of the charge curve.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-install charge cycle on the DVM-500PL:\u003c\/strong\u003e\n    Run the first full charge through the camera unit itself, not an external charger. The DVM-500PL's onboard BMS maps the new cell's discharge curve during that initial cycle — skipping it can cause the battery indicator to read inaccurately for the first several sessions.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the DVM-500PL battery indicator reads full then drops suddenly\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe DVM-500PL uses a voltage-threshold method to estimate charge level rather than coulomb counting. A new Li-ion cell has a slightly different discharge curve than a worn original, so the camera's fixed voltage thresholds don't map cleanly on the first few cycles. The indicator can sit at full until the cell crosses a threshold, then jump several bars at once. After two or three full charge-discharge cycles through the camera body, the readings stabilise.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDVM-500PL showing no battery detected after cell replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the BMS hasn't completed an initialisation handshake with the new cell. The fix is a full charge cycle via the camera's own charging port — not an external bay charger. Once the internal BMS completes that cycle, the camera registers the cell correctly. If the no-detection message persists after one full charge, confirm the cell is seated flush and the connector tab is making clean contact at all three pins.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333803638874,"sku":"BWCS-DVM500MC-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43333803671642,"sku":"BWCS-DVM500MC-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43333803704410,"sku":"BWCS-DVM500MC-3","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DVM500MC_1.webp?v=1778213127","url":"https:\/\/batteryweb.com\/products\/digital-ally-dvm-500pl-replacement-battery-37v-1100mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}