{"product_id":"medela-freestyle-breast-pump-replacement-battery-74v-3400mah-li-ion","title":"Medela Freestyle Replacement Battery 7.4V 3400mAh 919.7010","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMedela Freestyle Breast Pump — 7.4V Li-ion Replacement Battery (919.7010)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 3400mAh Li-ion battery replaces part number 919.7010 in the Medela Freestyle Breast Pump. It restores cordless operation to the portable electric breast pump when the original cell has degraded or failed. Voltage and capacity match OEM spec exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFreestyle Pump compatibility:\u003c\/strong\u003e\n    The Freestyle platform uses a fixed 7.4V two-cell Li-ion pack with a proprietary BMS handshake. Cells outside that voltage window or with the wrong connector pinout are rejected at startup. This pack matches both the physical connector and the communication protocol the pump's charge IC expects.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through the Freestyle's startup self-test and charge cycle. The BMS accepted the pack without fault codes, the charge IC climbed normally to full termination voltage, and the motor load profile drew current within expected range across the test cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eStartup self-test — do not interrupt:\u003c\/strong\u003e\n    After fitting this battery, let the Freestyle complete its full power-on sequence before pressing any other buttons. The pump runs a BMS verification routine at startup. Interrupting it — even briefly — can latch a false battery fault that won't clear until the next clean reboot.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Freestyle rejects a new battery on first boot\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Freestyle's charge IC applies a conservative acceptance threshold based on OEM cell chemistry. A brand-new cell that hasn't completed its first full charge-discharge cycle can sit just below that threshold, causing the pump to flag the pack as unacceptable. This isn't a fault with the battery — it's the BMS running a verification it hasn't yet calibrated against the new cell's actual capacity curve. One full charge followed by a normal use session resolves it for all subsequent cycles.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePump shuts off mid-session with no low-battery warning\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIn the first ten cycles, a new Li-ion cell responds to the Freestyle's motor load profile with slightly higher internal resistance than a broken-in cell. Under sustained pumping load, voltage can sag enough to trip the BMS undervoltage cutoff before the fuel gauge has flagged low battery to the display. The pump cuts power to protect the cell — it looks like a crash, but it's a protection event. Charge the pack fully and complete two or three more normal sessions; internal resistance drops as the cell breaks in, and sag-triggered cutoffs stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381420785754,"sku":"BWCS-MEF919MX-1","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381420818522,"sku":"BWCS-MEF919MX-2","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381420851290,"sku":"BWCS-MEF919MX-3","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MEF919MX-1.webp?v=1778900661","url":"https:\/\/batteryweb.com\/products\/medela-freestyle-breast-pump-replacement-battery-74v-3400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}