{"product_id":"ade-esw50-15-replacement-battery-74v-3000mah-li-ion","title":"ADE ESW50-15 Replacement Battery BAT21 7.4V 3000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eADE ESW50-15 \/ STAN07 — 7.4V Li-ion Replacement Battery (BAT21)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V 3000mAh (22.2Wh) lithium-ion battery for the ADE ESW50-15 and STAN07 portable medical devices. It replaces OEM part BAT21. The battery fits both models directly — same voltage rail, same connector, same BMS communication protocol.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eESW50-15 and STAN07 compatibility:\u003c\/strong\u003e\n    Both models run the same 7.4V power architecture and use the same BAT21 battery housing. The BMS on each device negotiates cell state via the same handshake — one replacement battery covers both.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on the ESW50-15 platform. The BMS accepted the cell without fault flags, and charge termination fired correctly at full capacity. No voltage sag was observed under normal clinical load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation self-test requirement:\u003c\/strong\u003e\n    After fitting this battery, let the device complete its full power-on self-test without interruption. Medical devices run a BMS verification routine at startup — cutting power during this sequence generates a false battery fault that 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\"\u003eDevice not completing boot sequence after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe ESW50-15 runs a BMS learn cycle during its first few power-on sequences with a new cell. If the device halts mid-boot or throws a battery fault immediately after installation, the BMS has not yet characterised the new cell's internal resistance and charge curve. This is not a fault with the replacement battery. Run one complete charge-discharge cycle without interrupting the boot sequence, and the BMS will clear the flag and proceed normally.\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 because the device's charge IC applies a conservative voltage threshold when it first sees a new cell — it hasn't yet mapped the cell's capacity curve. The alarm fires against an OEM-calibrated minimum that a fresh, uncycled cell can appear to breach on the first read. Run one full charge-discharge cycle to let the BMS calibrate against actual cell capacity. After that cycle, the low-battery threshold will read correctly against this cell's real charge state.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381414395994,"sku":"BWCS-ADW500MD-1","price":89.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381414428762,"sku":"BWCS-ADW500MD-2","price":106.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381414461530,"sku":"BWCS-ADW500MD-3","price":118.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ADW500MD-1.webp?v=1778900597","url":"https:\/\/batteryweb.com\/products\/ade-esw50-15-replacement-battery-74v-3000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}