{"product_id":"thermo-scientific-e1-clip-tip-4671-single-channel-replacement-battery-37v-1350mah-li-polymer","title":"Thermo Scientific 2215640 E1 Pipette Replacement Battery 3.7V 1350mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eThermo Scientific E1 Clip Tip 4671 Single Channel — 3.7V Li-Polymer Replacement Battery (2215640)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 1350mAh lithium-polymer cell replaces the OEM battery in the Thermo Scientific E1 Clip Tip electronic pipette series. It fits the 4671 Single Channel, 4672 Multichannel, and 16-channel Matrix variants. The cell powers both the dispensing motor and the onboard electronic controls that govern aspiration and dispense volumes.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eE1 Clip Tip series compatibility:\u003c\/strong\u003e\n    The 4671, 4672, and Matrix pipettes share a common battery bay, connector pinout, and BMS communication protocol — all three models draw on the same voltage rail and use identical charge-termination logic, so one cell covers the full lineup.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the E1 Clip Tip charge sequence and confirmed the BMS accepted the cell without fault codes, hit full charge-termination voltage at 4.2V, and passed motor-load draw without a low-voltage cutoff trigger.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap self-test protocol:\u003c\/strong\u003e\n    After installing this cell, let the pipette complete its full power-on self-test without interruption. The BMS runs a chemistry verification step at startup — cutting power mid-sequence causes a false battery fault that latches and persists 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\"\u003eCharge indicator stalling below 100% on the first charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe E1 Clip Tip charge IC applies a conservative current limit when it first encounters a new cell whose internal resistance hasn't settled. On the first charge cycle, the IC may hold at 95–99% for an extended period before terminating. This is the charge IC behaving correctly — it waits for the cell to accept a trickle top-up below 50mA before logging a full charge. Run one complete charge-to-discharge-to-charge cycle and the indicator will reach 100% normally on subsequent charges.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePipette shuts off mid-dispense after the first few cycles\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNew lithium-polymer cells have slightly elevated internal resistance in the first 5–10 cycles, which causes a sharper voltage sag under the motor's peak draw during aspiration or fast dispense. The BMS interprets that sag as a low-cell-voltage event and cuts output to protect the cell. The fix is straightforward: complete 5 full charge-discharge cycles before clinical use. After conditioning, internal resistance drops and the sag stays above the 3.0V BMS cutoff threshold under normal motor load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381426192474,"sku":"BWCS-TSE467MD-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381426225242,"sku":"BWCS-TSE467MD-2","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381426258010,"sku":"BWCS-TSE467MD-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TSE467MD-1.webp?v=1778900788","url":"https:\/\/batteryweb.com\/products\/thermo-scientific-e1-clip-tip-4671-single-channel-replacement-battery-37v-1350mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}