{"product_id":"rockwell-rd2865-replacement-battery-20v-4950mah-li-ion","title":"Rockwell RD2865 20V Replacement Battery 4950mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRockwell RD2865 \/ RD2871 \/ RD2872 \/ RD2873 Series — 20V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 20V Li-ion battery replaces the original pack on Rockwell RD2865, RD2871, RD2872, RD2873, and over 30 compatible models in the same platform. Capacity is 4950mAh (99Wh). It fits any tool in this series that runs on the 20V slide-mount system.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRD2865 platform compatibility:\u003c\/strong\u003e\n    The RD2865, RD2871, RD2872, and RD2873 share the same 20V rail, connector pinout, and BMS handshake protocol — which is why one battery pack serves the entire group without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through repeated motor-start cycles on a 20V Rockwell drill. The BMS held its overcurrent threshold on trigger-pull inrush and did not trip false cutoffs across the test sequence.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle load conditioning:\u003c\/strong\u003e\n    On first use, run the drill at half load for two cycles before full-torque applications. This lets the BMS log actual motor inrush current and set accurate overcurrent thresholds before you push it into hardwood or concrete anchors.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBMS cutoff on RD2865 motor-start inrush surge\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eEvery trigger pull on a cordless drill sends a current spike — sometimes 3× to 5× the running draw — through the battery in the first milliseconds. A new pack with a fresh BMS that has not yet profiled your motor will sometimes flag that spike as a fault and cut output instantly. This is not a defective battery. The BMS is doing exactly what it should. Run two half-load break-in cycles and the protection threshold recalibrates to your specific tool's inrush signature.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharger blinking red on a new 20V pack that sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells drop below charger acceptance voltage during extended storage — typically under 2.5V per cell. When that happens, the charger's safety circuit refuses to begin a charge cycle and signals the fault with a red blink. The fix is a recovery charge: some Rockwell chargers have a reconditioning mode that trickle-charges at low current until the pack climbs back above the acceptance threshold. If yours does not, a compatible Li-ion charger with a \"boost\" or \"wake\" function will bring the pack up to 20V before normal charging resumes.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381303312474,"sku":"BWCS-WRX352PX-1","price":98.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381303345242,"sku":"BWCS-WRX352PX-2","price":115.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381303378010,"sku":"BWCS-WRX352PX-3","price":128.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-WRX352PX-1.webp?v=1779759628","url":"https:\/\/batteryweb.com\/products\/rockwell-rd2865-replacement-battery-20v-4950mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}