{"product_id":"jumper-jpd-300a-replacement-battery-148v-2600mah-li-ion","title":"Jumper JPD-300A Replacement Battery 14.8V 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eJumper JPD-300A Series — 14.8V Li-ion Replacement Battery (JHT-99J-00)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.8V, 2600mAh Li-ion replacement battery for the Jumper JPD-300A pulse oximeter. It also fits the JPD-300K, JPD-300P, and JPK-300B models. Use this when the original cell no longer holds charge or fails to pass the device's startup self-test.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eJPD-300 and JPK-300 series compatibility:\u003c\/strong\u003e\n    The JPD-300A, JPD-300K, JPD-300P, and JPK-300B share the same 14.8V battery rail, connector pinout, and BMS handshake protocol. One part number covers all four.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through full charge and discharge cycles on a JPD-300A unit. The BMS completed its verification sequence without fault flags, and the charge IC accepted the cell without triggering an incompatible-battery error.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap startup protocol:\u003c\/strong\u003e\n    After fitting this battery, let the device complete its full power-on self-test without interruption. Jumper pulse oximeters run a BMS verification at boot — cutting power during that sequence plants a false battery fault 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\"\u003eDevice not completing boot sequence on new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eJumper oximeters run a multi-stage self-test at power-on that includes a BMS handshake. A new cell with a partial state of charge can cause the device to stall mid-sequence if the BMS reports voltage outside the expected window. Charge the battery fully before the first power-on — not partway. If the device still stalls, remove the battery for 30 seconds, refit it, then power on and leave it alone until the self-test finishes.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharge indicator not reaching 100% on first charge cycle\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn the first charge, the JPD-300A's charge IC applies a conservative current limit to an unrecognised cell — this is normal behaviour, not a fault. The indicator may plateau at 90–95% and appear stuck. Run one complete charge-discharge-recharge cycle and the IC recalibrates its capacity estimate. After that cycle, the charge indicator will reach 100% and the battery will pass clinical-use self-tests consistently.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381428355162,"sku":"BWCS-JMP300MD-1","price":52.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381428387930,"sku":"BWCS-JMP300MD-2","price":61.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381428420698,"sku":"BWCS-JMP300MD-3","price":68.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-JMP300MD-1.webp?v=1778900750","url":"https:\/\/batteryweb.com\/products\/jumper-jpd-300a-replacement-battery-148v-2600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}