{"product_id":"smiths-corporation-top-5300-replacement-battery-12v-2000mah-ni-mh","title":"Smiths BP-53 Compatible Battery 12V 2000mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSmiths Corporation TOP-5300 Infusion Pump — 12V Ni-MH Replacement Battery (BP-53)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V 2000mAh Ni-MH replacement battery for the Smiths Corporation TOP-5300 and related TOP Infusion Pump series, including the TOP-2200 and TOP-3300. It carries OEM part number BP-53 and slots into the same battery bay as the original pack. Capacity is 2000mAh (24Wh) — matched to the product data, not estimated.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTOP Infusion Pump series compatibility:\u003c\/strong\u003e\n    The TOP-5300, TOP-2200, and TOP-3300 share a common 12V battery architecture with the same connector pinout and BMS handshake protocol. A single BP-53 cell format covers all three platforms 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 a full charge-discharge sequence and monitored the BMS handshake at startup. The cell passed the device's internal self-test on the second full cycle, with voltage holding steady through the load profile typical of infusion pump operation.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eStartup sequence on first install:\u003c\/strong\u003e\n    After fitting this battery, allow the device to complete its full power-on self-test without interruption. Infusion pumps run a BMS verification routine at boot — 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\"\u003eWhy the TOP-5300 triggers a low-battery alarm with a fully charged new pack\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe TOP-5300's charge IC calibrates its threshold against cell history. A new Ni-MH cell has no charge history, so the BMS applies its most conservative cutoff — often flagging the pack as low even after a confirmed full charge. This is not a fault with the replacement cell. One complete charge-discharge cycle lets the BMS record the cell's actual capacity curve. After that cycle, alarm behaviour normalises and the device reads charge state correctly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDevice not powering on after the battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells self-discharge during storage. If the pack voltage drops below the BMS recovery threshold — typically around 10V for a 12V Ni-MH pack — the device will not boot. The BMS interprets anything below that floor as a damaged or missing cell and blocks startup entirely. Connect the battery to its charger and allow a full, uninterrupted charge before attempting to power on the device. If the charger completes the cycle and the device still won't boot, check that the terminal voltage is at or above 12.0V with a multimeter before re-inserting.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381478359130,"sku":"BWCS-SWZ530MD-1","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381478391898,"sku":"BWCS-SWZ530MD-2","price":58.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381478424666,"sku":"BWCS-SWZ530MD-3","price":65.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SWZ530MD-1.webp?v=1778901067","url":"https:\/\/batteryweb.com\/products\/smiths-corporation-top-5300-replacement-battery-12v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}