{"product_id":"handheld-dolphin-7900-replacement-battery-74v-3400mah-li-ion","title":"HandHeld Dolphin 7900 Replacement Battery 7.4V 3400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHandHeld Dolphin 7900 \/ 9500 \/ 9550 \/ 9900 — 7.4V Li-ion Replacement Battery (200-00591-01)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V 3400mAh Li-ion battery for the HandHeld Dolphin 7900, 9500, 9550, and 9900 rugged mobile computers. These devices are used in warehouse pick-and-pack, retail inventory, and asset tracking operations. The pack slots into the same battery bay as the original and communicates with the device BMS over the same contact array.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDolphin 7900, 9500, 9550, and 9900 compatibility:\u003c\/strong\u003e\n    All four models share the same 7.4V battery bay, connector pinout, and BMS handshake protocol. One pack covers the full platform without any wiring or adapter differences.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through barcode scan bursts combined with active wireless polling. The BMS held stable across repeated trigger-inrush events and did not trip on cold-start draws.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-shift preparation:\u003c\/strong\u003e\n    After installing a new pack, place the Dolphin in its charging cradle and run a full charge cycle before the first pick-and-pack shift. The scan trigger inrush current peaks when the cell is near minimum voltage — a fully charged cell prevents false BMS cutoffs during the first hour of operation.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCradle throwing a charging error on a new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eDolphin charging cradles use spring-loaded contacts to communicate charge status. If those contacts have oxidation or debris from a worn-out pack, the cradle reads elevated contact resistance and flags a fault rather than starting a charge cycle. Wipe the gold contacts on the bottom of the new battery and the matching pins inside the cradle with a dry lint-free cloth. Reseat the device firmly until you hear it click into place. The cradle should begin charging within 10 seconds and the amber LED should appear steady.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eScanner losing wireless connection during rapid scan bursts\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn the Dolphin 9500 and 9550, the radio transmitter and the scan trigger both draw current simultaneously during a rapid scan sequence. If the cell voltage sags below 6.8V under that combined load, the BMS briefly reduces output to protect the cell — the radio drops its connection before the scanner shows any low-battery warning. This is more common with aged packs that have lost capacity through shallow cycling. A replacement pack at full charge maintains voltage above 7.0V under the same combined load, keeping the radio link stable through the burst.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43324784607322,"sku":"BWCS-HD7900BX-1","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43324784640090,"sku":"BWCS-HD7900BX-2","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43324784672858,"sku":"BWCS-HD7900BX-3","price":65.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HD7900BX-1.webp?v=1778123166","url":"https:\/\/batteryweb.com\/products\/handheld-dolphin-7900-replacement-battery-74v-3400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}