{"product_id":"dynascan-2b-replacement-battery-37v-1000mah-li-ion","title":"Dynascan PB2B 2B Replacement Battery 3.7V 1000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDynascan 2B — 3.7V Li-ion Replacement Battery (PB2B)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1000mAh lithium-ion replacement battery for the Dynascan 2B two-way radio. It carries OEM part number PB2B and slots directly into the 2B handset. At 53.40 x 34.00 x 5.60mm, the physical footprint matches the original pack.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDynascan 2B platform fit:\u003c\/strong\u003e\n    The 2B runs a single-cell 3.7V architecture with a low-current BMS suited to compact handheld radios. This pack matches that voltage rail and connector pinout, so the radio's charge circuit reads the new cell correctly 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 transmit and standby loads matching the 2B's draw profile. The BMS held cutoff cleanly at both the high-current PTT spike and trickle standby drain without tripping into lockout.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst insertion — contact check:\u003c\/strong\u003e\n    If the charger shows a fault LED on first insertion, remove the pack, wipe the contact pads with a dry cloth, and reseat firmly. The 2B charger dock requires a clean contact cycle to complete the BMS handshake before charging begins.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Dynascan 2B cuts out mid-transmission on a new battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new lithium-ion cell ships at storage voltage — typically 3.6V to 3.65V, not a full 3.7V charge. When PTT is pressed, transmit current spikes sharply, and the BMS sees the voltage dip under that load as a potential undervoltage condition. On a partially charged new pack, that dip can trip the overcurrent or low-voltage cutoff before the radio completes a transmission. The fix is straightforward: run a full charge cycle before first use, bringing the cell to its rated ceiling so the BMS has adequate headroom during TX spikes.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing fewer bars than expected after fitting the PB2B\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Dynascan 2B reads battery level using voltage-threshold steps — each bar corresponds to a voltage band, not a fuel gauge percentage. A new pack at storage voltage sits in the lower threshold band and displays one or two bars even though the cell is not depleted. This is a voltage-state reading, not a defect. Charge the pack fully in the dock and the indicator will advance to the expected level once cell voltage reaches the top threshold.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426226896986,"sku":"BWCS-DNC200TW-1","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426226929754,"sku":"BWCS-DNC200TW-2","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426226962522,"sku":"BWCS-DNC200TW-3","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DNC200TW-1.webp?v=1779930493","url":"https:\/\/batteryweb.com\/products\/dynascan-2b-replacement-battery-37v-1000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}