{"product_id":"honeywell-rp4-replacement-battery-74v-6800mah-li-ion","title":"Honeywell RP4 Replacement Battery 7.4V 6800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHoneywell RP4 \/ RP4D — 7.4V Li-ion Replacement Battery (550053-000)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 6800mAh Li-ion battery replaces part number 550053-000 in the Honeywell RP4 and RP4D mobile thermal printers. These are compact portable printers used in retail, logistics, and field service for on-the-go receipt and label printing. Capacity figure is 50.32Wh — matching the original cell specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRP4 and RP4D compatibility:\u003c\/strong\u003e\n    Both models share the same 7.4V battery bay, connector pinout, and BMS handshake protocol. The same cell works across the full RP4 platform without any firmware or hardware modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell in an RP4 unit and monitored BMS communication through charge and discharge cycles. The protection circuit responded correctly to thermal head current draw and motor start loads — no false cutoffs or charge rejection observed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use print sequence:\u003c\/strong\u003e\n    After installing, charge the battery to full and print five test receipts before deploying the unit. The paper feed motor draws a short current spike on each feed cycle — running these prints confirms the BMS current profile is correctly calibrated for the new cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the RP4 refuses to power on after sitting unused for months\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge at roughly 2–3% per month in storage. An RP4 left unused for six months or more can arrive at a voltage too low for the BMS to accept a normal charge cycle. The protection circuit interprets sub-threshold voltage as a fault and blocks charging. Connect the printer to the OEM charger and leave it for 30–40 minutes — most BMS units on this platform will trickle-charge back to the recovery threshold (around 6.0V) before switching to normal charge mode.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePrint output fading or streaking mid-job on a new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe thermal print head on the RP4 needs a stable voltage to hold the correct element temperature across the full print width. If voltage sags during the print cycle — common with a degraded or partially charged cell — some elements run cooler than spec and produce faded or uneven output. This is not a head fault; it is a power delivery issue. Charge the battery fully and retest. If streaking persists at full charge, check that the battery contacts in the bay are clean and making firm contact.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43415992893530,"sku":"BWCS-HPR400XL-1","price":77.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43415992926298,"sku":"BWCS-HPR400XL-2","price":91.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43415992959066,"sku":"BWCS-HPR400XL-3","price":101.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HPR400XL-1.webp?v=1779758840","url":"https:\/\/batteryweb.com\/products\/honeywell-rp4-replacement-battery-74v-6800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}