{"product_id":"seiko-dpu-414-replacement-battery-48v-1500mah-ni-mh","title":"Seiko DPU-414 Replacement Battery BP-4005 4.8V 1500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSeiko DPU-414 \/ DP414 — 4.8V Ni-MH Replacement Battery (BP-4005)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 4.8V 1500mAh Ni-MH replacement battery for the Seiko DPU-414 and DP414 portable thermal printers. It replaces OEM part numbers BP-4005, BP-4005-E, and 4334612. Capacity matches the original cell spec at 7.2Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDPU-414 and DP414 compatibility:\u003c\/strong\u003e\n    Both models share the same 4.8V NiMH battery bay, connector pinout, and BMS handshake profile — the pack slots directly into either unit without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through the DPU-414's full print and feed sequence. The BMS maintained stable current delivery across thermal head activation and paper feed motor draws without triggering low-voltage cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use print sequence:\u003c\/strong\u003e\n    After installing, charge the pack fully, then run 5 consecutive test receipts before field deployment. The paper feed motor draws a short high-current pulse on each cycle — this sequence confirms the BMS current profile has settled correctly for the new cells.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDPU-414 battery voltage floor and motor drive threshold\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe DPU-414 uses a stepper-driven paper feed motor that requires a minimum rail voltage to generate enough torque for consistent media advance. As a Ni-MH pack ages, cell voltage drops under load faster than the open-circuit reading suggests. A pack reading 4.6V at rest can sag below the motor's drive threshold the moment the print head and feed motor activate simultaneously. Replacing the pack restores the voltage headroom that keeps both loads stable.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFaded or patchy print on a freshly charged battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThermal print density depends on the head reaching a precise temperature — that temperature is set by the voltage and duration of the pulse sent to each heating element. If the battery sags under load, the pulse is weaker, the head runs cooler, and the output looks faded or uneven across the receipt width. This is common with cells that have lost internal capacity through shallow cycling — the open-circuit voltage looks fine but collapses mid-job. Check pack voltage under load; if it drops below 4.2V during a print cycle, the cells need replacing.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43415990468698,"sku":"BWCS-SDP414SL-1","price":46.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43415990501466,"sku":"BWCS-SDP414SL-2","price":54.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43415990534234,"sku":"BWCS-SDP414SL-3","price":60.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SDP414SL-1.webp?v=1779758956","url":"https:\/\/batteryweb.com\/products\/seiko-dpu-414-replacement-battery-48v-1500mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}