{"product_id":"chison-eco-1-replacement-battery-144v-5200mah-li-ion","title":"Chison ECO 1 Replacement Battery 14.4V 5200mAh 33-00012-00","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eChison ECO 1 \/ ECO 2 Portable Ultrasound — 14.4V Li-ion Replacement Battery (33-00012-00)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 14.4V 5200mAh (74.88Wh) lithium-ion battery replaces the Chison OEM part 33-00012-00 (also listed as BT-2500) in the ECO 1 and ECO 2 portable ultrasound systems. It fits both the standard ECO 1 and ECO 2 units, along with six additional Chison portable ultrasound configurations sharing the same battery bay and connector. Voltage and cell count match the original pack exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eECO 1 and ECO 2 platform fit:\u003c\/strong\u003e\n    Both the ECO 1 and ECO 2 share the same 14.4V battery rail, connector pinout, and BMS communication protocol. One replacement cell covers the full platform — no wiring changes or adapter needed.\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 ECO-series hardware. The BMS handshake completed without fault codes, and the device passed its power-on self-test on the first boot after installation.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap startup protocol:\u003c\/strong\u003e\n    After installing this battery, let the ECO unit complete its full power-on self-test without interrupting it. The device runs a BMS verification sequence at boot — cutting power during that window triggers a battery fault flag that persists until the next complete 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 ECO 1 reports a battery fault after a confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe ECO 1's BMS stores a capacity model calibrated to the original cell chemistry. A new replacement cell has not yet built a charge history that the BMS recognises, so the system can flag a fault or display an inaccurate state-of-charge reading even when the pack is physically full. This resolves after one complete charge-to-discharge cycle, which gives the BMS enough data to update its internal model. Do not use the unit clinically until that first cycle is complete and the self-test passes cleanly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eECO 1 shuts off mid-scan during the first few uses\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNew lithium-ion cells have slightly higher internal resistance before the first 8–10 cycles. The ECO 1's transducer firing load draws peak current that can push a cold, uncycled cell below the BMS cutoff threshold momentarily, triggering a protective shutdown. This is not a defective battery — it is the BMS protecting the cell before it has broken in. Run two to three full charge-discharge cycles away from patient use, and the shutdowns will stop as internal resistance drops to its rated value.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381363146842,"sku":"BWCS-CHE100MD-1","price":98.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381363179610,"sku":"BWCS-CHE100MD-2","price":116.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381363212378,"sku":"BWCS-CHE100MD-3","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CHE100MD_1.webp?v=1778900266","url":"https:\/\/batteryweb.com\/products\/chison-eco-1-replacement-battery-144v-5200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}