{"product_id":"million-ml1500-replacement-battery-148v-3400mah-li-ion","title":"Million ML1500 Replacement Battery 14.8V 3400mAh LPO155","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMillion ML1500 \/ ML1200 — 14.8V Li-ion Replacement Battery (LPO155-14.8V-2.2AH)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.8V lithium-ion replacement battery rated at 3400mAh (50.32Wh) for the Million ML1500 and ML1200 portable medical devices. It replaces OEM part numbers LPO155-14.8V-2.2AH and FY-18650LP01555. The cell pack matches the original voltage rail and connector configuration for both models in this line.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eML1500 and ML1200 compatibility:\u003c\/strong\u003e\n    Both models share the same 14.8V four-cell series configuration, connector pinout, and BMS handshake protocol — that is why one cell pack covers both. Swapping between these two units does not require any firmware or hardware adjustment on the device side.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through charge and discharge on the bench with BMS communication active. The protection circuit responded correctly to over-voltage, over-current, and low-voltage cutoff thresholds without triggering a fault state on the host device.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation self-test cycle:\u003c\/strong\u003e\n    After fitting this battery, allow the ML1500 or ML1200 to complete its full power-on self-test without interruption. The device runs BMS verification at startup — cutting power during this sequence causes a false battery fault flag that will persist 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 ML1500 alarms low battery immediately after a confirmed full charge\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe ML1500 BMS applies a capacity threshold calibrated to the OEM cell chemistry during self-test. A new replacement cell has not yet completed a full charge-discharge learn cycle, so the device reads state-of-charge conservatively and trips the low battery alarm even when the pack is fully charged. This is not a fault in the replacement cell — it is the BMS operating within its designed verification window. Run one complete charge-to-discharge-to-full-charge cycle before relying on the battery indicator for clinical reference. After that cycle, the alarm threshold calibrates correctly to the new cell's actual capacity.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eML1500 will not power on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLithium-ion cells self-discharge during storage. If the pack voltage has dropped below approximately 10.0V — which can happen after several months on a shelf — the ML1500's BMS will refuse to initiate, as this sits below its recovery threshold. The fix is to place the battery on charge immediately and leave it connected for a full uninterrupted charge cycle. If the charger does not begin the charge cycle within a few minutes, the pack may need a trickle pre-charge — check that your charger supports recovery mode, or use the device's own charging port at 14.8V input.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381440151642,"sku":"BWCS-MML120MX-1","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381440184410,"sku":"BWCS-MML120MX-2","price":60.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381440217178,"sku":"BWCS-MML120MX-3","price":67.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MML120MX-1.webp?v=1778900852","url":"https:\/\/batteryweb.com\/products\/million-ml1500-replacement-battery-148v-3400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}