{"product_id":"rayovac-rv-dc8100-replacement-battery-74v-2000mah-li-ion","title":"Rayovac RV-DC8100 Replacement Battery 7.4V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRayovac RV-DC8100 — 7.4V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V 2000mAh Li-ion battery replaces the original pack in the Rayovac RV-DC8100 survey and measurement instrument. It fits professional data collection and field diagnostic equipment where the original cell has degraded. Voltage and capacity match the OEM specification: 7.4V, 2000mAh (14.8Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRV-DC8100 platform fit:\u003c\/strong\u003e\n    The RV-DC8100 uses a 7.4V two-cell Li-ion configuration with a BMS that monitors cell balance and communicates pack state to the instrument firmware. This replacement matches that voltage rail and connector geometry so the instrument reads pack status correctly.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through full charge and discharge on a 7.4V Li-ion test rig, confirmed BMS cutoff at the correct low-voltage threshold, and verified the protection circuit resets cleanly after each cycle without latching into fault mode.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use calibration on survey instruments:\u003c\/strong\u003e\n    After installing, run a full calibration cycle through the instrument menu before field deployment. The RV-DC8100 maps battery state during calibration — skipping this step causes premature low-battery warnings during the first measurement session, even with a fully charged pack.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eProbe or sensor initialisation tripping BMS cutoff on the RV-DC8100\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the RV-DC8100 powers a probe or sensor module, the initialisation sequence draws a short current spike — often 2× to 3× the steady-state load. If the battery BMS is set to a conservative overcurrent threshold, this spike trips a protective cutoff and the instrument shuts down immediately after probe activation. The cell itself may be fully charged; the issue is the BMS responding to inrush current, not actual depletion. This replacement pack uses a protection circuit rated for the inrush profile of sensor-class instruments, so the BMS does not latch off during normal probe startup.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePack will not charge after the instrument sat unused for several months\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells that sit in a discharged state for extended periods drop below the BMS recovery threshold — typically around 2.5V per cell (5.0V pack total). Below this level, most chargers and instruments refuse to initiate a charge cycle as a safety measure. Connect the battery to a Li-ion charger that supports a low-voltage recovery or \"wake-up\" mode, which trickle-charges at a reduced current until the pack climbs above 6.0V. Once the pack recovers to 6.0V, normal constant-current charging resumes. If the pack does not respond to trickle charge within 30 minutes, the cells have likely undergone irreversible lithium plating and the pack should be replaced.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360795918426,"sku":"BWCS-LI1SL-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360795951194,"sku":"BWCS-LI1SL-2","price":37.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360795983962,"sku":"BWCS-LI1SL-3","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LI1SL-1.webp?v=1778616259","url":"https:\/\/batteryweb.com\/products\/rayovac-rv-dc8100-replacement-battery-74v-2000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}