{"product_id":"welch-allyn-connex-spot-replacement-battery-74v-3400mah-li-ion","title":"Welch-Allyn Connex Spot 7.4V 3400mAh Replacement Battery 901000","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eWelch-Allyn Connex Spot Monitor — 7.4V Li-ion Replacement Battery (901000)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V 3400mAh Li-ion battery replaces the original power cell in the Welch-Allyn Connex Spot and Connex Spot Monitor. It also fits Grason-Stadler and Pressure unit Connex Spot configurations. Cross-references include OEM part numbers 901000, BATT22, OM11878, and TM78370.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eConnex Spot platform fit:\u003c\/strong\u003e\n    These monitor variants share the same 7.4V battery bay, connector pinout, and BMS handshake protocol. One cell covers the full platform without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge, full load, and rest on the Connex Spot platform. The BMS accepted the cell, completed its verification handshake, and reported accurate state-of-charge across the full discharge curve.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install self-test protocol:\u003c\/strong\u003e\n    After inserting this battery, allow the Connex Spot to complete its full power-on self-test without interruption. The device runs a BMS verification sequence at startup. Cutting power during this sequence logs 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 Connex Spot runs a BMS learn cycle on first use with a new cell. If the device stalls mid-boot or returns a battery error, the BMS has not yet profiled the replacement cell's chemistry. This is not a fault with the cell. Run one full charge-discharge cycle before returning the unit to clinical use — the BMS will map the new cell's discharge curve and boot cleanly from the second cycle onward.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharge indicator not reaching 100% on the first charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn first installation, the Connex Spot's charge IC applies a conservative current limit to an unrecognised cell. This causes the indicator to plateau below 100% before the cycle completes. The cell is not defective. Disconnect the charger, power the device on briefly to drop the voltage slightly, then reconnect — the charge IC re-evaluates the cell and typically reaches full charge on the second attempt. Target resting voltage after a full charge should read approximately 8.3–8.4V at the battery terminals.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381451882586,"sku":"BWCS-WB220MD-1","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381451915354,"sku":"BWCS-WB220MD-2","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381451948122,"sku":"BWCS-WB220MD-3","price":65.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-WB220MD-1.webp?v=1778900958","url":"https:\/\/batteryweb.com\/products\/welch-allyn-connex-spot-replacement-battery-74v-3400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}