{"product_id":"iwatsu-dm-900a-replacement-battery-148v-6600mah-li-ion","title":"IWATSU DM-900A Replacement Battery 14.8V 6600mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eIWATSU DM-900A \/ DM-8000H — 14.8V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.8V, 6600mAh (97.68Wh) lithium-ion replacement battery for the IWATSU DM-900A and DM-8000H portable ultrasound systems. These are clinical diagnostic devices used in cardiovascular and general ultrasound imaging. If the original cell has degraded or failed, this battery restores the power supply to the unit.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDM-900A and DM-8000H compatibility:\u003c\/strong\u003e\n    Both models run the same 14.8V four-cell Li-ion architecture with identical connector pinout and BMS communication protocol. A single battery covers both units without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through charge and load profiling at 14.8V nominal. The BMS responded correctly to charge termination signals and maintained stable voltage under sustained draw — no premature cutoff on initial cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation self-test protocol:\u003c\/strong\u003e\n    After fitting this battery, allow the DM-900A or DM-8000H to complete its full power-on self-test cycle without interruption. Medical ultrasound systems run BMS verification at startup — cutting power mid-sequence triggers a false battery fault 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\"\u003eDevice not completing boot sequence after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe DM-900A runs a hardware self-test during boot that includes a BMS handshake. A freshly installed cell that has not yet completed one full charge-discharge cycle may report state-of-charge data that falls outside the device's expected OEM parameters. The system interprets this as a battery fault and halts the boot sequence before the imaging software loads. Run one full charge cycle to completion before powering the unit on for the first time post-swap.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alarm triggering immediately after a confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the BMS on the device is calibrated to OEM cell chemistry tolerances. A new replacement cell reports a resting voltage that the device reads as below the alarm threshold — typically under 14.4V at rest after a first charge — even though the cell itself is not depleted. One complete charge-discharge cycle recalibrates the state-of-charge register. After that first cycle, the alarm threshold is applied against accurate capacity data and the false alarm clears.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381476687962,"sku":"BWCS-EST044MD-1","price":342.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381476720730,"sku":"BWCS-EST044MD-2","price":406.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381476753498,"sku":"BWCS-EST044MD-3","price":453.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-EST044MD-1.webp?v=1778901051","url":"https:\/\/batteryweb.com\/products\/iwatsu-dm-900a-replacement-battery-148v-6600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}