{"product_id":"braven-brv-pro-replacement-battery-37v-3400mah-li-ion","title":"Braven BRV-PRO Replacement Battery 3.7V 3400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBraven BRV-PRO \/ BPRO5CB — 3.7V Li-ion Replacement Battery (A007032)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 3400mAh Li-ion cell replaces the original battery in the Braven BRV-PRO and BPRO5CB portable Bluetooth speakers. It restores full power to the audio amplifier, Bluetooth radio, and USB charging output. Capacity and voltage match the OEM specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBRV-PRO and BPRO5CB compatibility:\u003c\/strong\u003e\n    Both models share the same battery bay dimensions, connector pinout, and BMS communication protocol. The cell draws from a single 3.7V rail that powers the amplifier, the Bluetooth chipset, and the speakerphone circuit simultaneously. One cell fits both.\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 on a BRV-PRO unit, confirming the BMS accepted the pack without fault codes, the fuel gauge calibrated correctly, and the amplifier held voltage under high-volume load without triggering a low-voltage cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eMonthly discharge cycle for BRV-PRO users:\u003c\/strong\u003e\n    Because most people top off this speaker before it drops below 50%, the fuel gauge drifts over time and the cell develops shallow-cycle fatigue. Run the battery below 20% at least once a month before recharging to reset the gauge and slow capacity fade.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the BRV-PRO audio distorts before the battery indicator shows empty\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe amplifier in the BRV-PRO requires a stable voltage above roughly 3.4V to drive the speaker cones cleanly at high output. As the cell ages, internal resistance rises and voltage sags under peak amplifier draw — even when the fuel gauge still reads 20–30%. The cell has charge left, but it cannot deliver it fast enough. Replacing the cell eliminates the sag and restores clean output across the full charge range.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBRV-PRO not waking from USB charge after sitting unused for weeks\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells that self-discharge below approximately 2.5V enter a deep-discharge state where the BMS blocks normal USB-C charging to protect the cell. The speaker appears completely dead — no LED, no response. To recover the pack, apply a low-current trickle charge using a compatible cable and leave it connected for 20–30 minutes before expecting the LED to respond. Once the cell climbs back above 3.0V, the BMS re-enables standard charge input and the speaker will power on normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416211816538,"sku":"BWCS-BRV500XL-1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416211849306,"sku":"BWCS-BRV500XL-2","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416211882074,"sku":"BWCS-BRV500XL-3","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BRV500XL-1.webp?v=1779760823","url":"https:\/\/batteryweb.com\/products\/braven-brv-pro-replacement-battery-37v-3400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}