{"product_id":"ronbo-rb700-fetal-monitor-replacement-battery-148v-2600mah-li-ion","title":"Ronbo RB700 Fetal Monitor Replacement Battery 14.8V 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRonbo RB700 Fetal Monitor — 14.8V Li-ion Replacement Battery (RB-700)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 14.8V, 2600mAh Li-ion battery replaces the original power pack in the Ronbo RB700 Fetal Monitor. It fits the RB700 directly, matching the OEM voltage rail and connector configuration. The RB700 is a portable clinical device used to monitor fetal heart rate and uterine contractions — a stable, correctly specified battery is non-negotiable in that environment.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRB700 platform fit:\u003c\/strong\u003e\n    The RB700 runs a 14.8V four-cell Li-ion configuration. This replacement matches that cell count and voltage rail, so the onboard BMS handshake completes without triggering a battery fault on the device's power management board.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on a 14.8V medical-class load profile. The BMS reported state-of-charge accurately from the second cycle onward, and no thermal events or cutoff trips occurred during the test sequence.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation self-test protocol:\u003c\/strong\u003e\n    After fitting this battery, let the RB700 complete its full power-on self-test without interruption. The device runs BMS verification at startup — cutting power during this sequence stores a false battery fault that persists until the next complete reboot cycle.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the RB700 alarms low battery immediately after a confirmed full charge\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe RB700's BMS sets its low-battery threshold against a learned capacity baseline from the OEM cell. A new replacement cell hasn't completed the learn cycle yet, so the BMS may read state-of-charge conservatively and trip the alarm even at a full charge state. This is not a faulty battery — it's the BMS operating before it has calibrated to the new cell's actual capacity curve. Run one complete charge-to-discharge-to-charge cycle without interruption. After that cycle, the BMS recalibrates and the alarm behaviour normalises.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRB700 will not power on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge during storage. If voltage drops below approximately 10V — which can happen after several months on a shelf — the RB700's BMS protection circuit locks out to prevent deep-discharge damage, and the device shows no response at all. Connect the battery to the RB700 on charge and leave it for a minimum of two hours before attempting to power on. The charge IC applies a low-current pre-charge recovery phase that brings the cell back above the BMS recovery threshold, typically around 12V, before normal charging resumes.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381381136474,"sku":"BWCS-RNB700MD-1","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381381169242,"sku":"BWCS-RNB700MD-2","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381381202010,"sku":"BWCS-RNB700MD-3","price":66.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RNB700MD-1.webp?v=1778900511","url":"https:\/\/batteryweb.com\/products\/ronbo-rb700-fetal-monitor-replacement-battery-148v-2600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}