{"product_id":"hytera-dp505-replacement-battery-74v-3350mah-li-ion","title":"Hytera DP505 Replacement Battery BL1502 7.4V 3350mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHytera DP505 \/ PD402 Series — 7.4V Li-ion Replacement Battery (BL1502)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V, 3350mAh lithium-ion replacement for the Hytera BL1502 battery pack. It fits the DP505, PD402, PD405, PD406, and over 39 additional Hytera digital portable radio models. Voltage and connector match the original Hytera specification — no modification needed.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDP500 and PD400 platform compatibility:\u003c\/strong\u003e\n    These models share the same 7.4V rail, battery cavity dimensions, and BMS handshake protocol. The BL1502, BL1504, BL2010, BL2020, and BL2020-EX all use the same connector and contact layout, which is why a single replacement pack covers the full range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack on the DP505 platform. The BMS held charge acceptance from the first dock insertion, transmit current spikes during PTT press registered within normal range, and the protection circuit responded correctly to simulated overdischarge conditions.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst insertion into the charger dock:\u003c\/strong\u003e\n    If the dock shows a fault LED on initial insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The Hytera platform requires a clean contact cycle to complete the BMS handshake before charging begins — this is not a faulty pack.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the DP505 cuts out mid-transmission on a new BL1502\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNew lithium-ion cells ship at storage voltage — typically around 3.7V per cell, not full charge. When PTT is pressed, transmit current draw spikes sharply. If the cell is at storage voltage, that spike can pull the pack voltage below the BMS overcurrent threshold, triggering a momentary cutoff. This is not a fault in the replacement pack — it is the BMS protecting the cells before they have been fully charged. Charge the pack to full before the first shift and the cutoff will not recur.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected after fitting the BL1502\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe DP505 uses a voltage-threshold bar indicator, not a fuel gauge chip. A new pack at storage voltage reads lower on that threshold scale, so the radio displays one fewer bar than a freshly charged pack would. This is not a capacity defect. Run a full charge cycle through the Hytera dock and let the pack reach 8.4V. The bar display will read correctly once the cells are at rated charge voltage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43303974404186,"sku":"BWCS-HTC502TX-1","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43303974436954,"sku":"BWCS-HTC502TX-2","price":70.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43303974469722,"sku":"BWCS-HTC502TX-3","price":78.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HTC502TX_1.webp?v=1777520716","url":"https:\/\/batteryweb.com\/products\/hytera-dp505-replacement-battery-74v-3350mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}