{"product_id":"hytera-dp505-replacement-battery-74v-1500mah-li-ion","title":"Hytera DP505 BL1502 Compatible Battery 7.4V 1500mAh","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 7.4V, 1500mAh lithium-ion battery replaces the Hytera BL1502, BL1504, BL2010, BL2020, and BL2020-EX packs. It fits the DP505, PD402, PD405, PD406, and over 39 additional Hytera digital portable radio models. Voltage and capacity match the original specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDP500 \/ PD400 platform fit:\u003c\/strong\u003e\n    These models share the same battery bay dimensions, connector pinout, and BMS handshake protocol. One pack covers the full range without modification or adapters.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through full charge cycles on a DP505 and PD405 dock. The BMS negotiated correctly on both units — charge accepted, no fault LED, cells balanced within spec at top of charge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst insertion contact check:\u003c\/strong\u003e\n    If the charger dock shows a fault LED on first insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The Hytera dock requires a clean contact cycle to complete the BMS handshake before charging will start.\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\"\u003eDuring PTT, the DP505 transmitter draws a sharp current spike — typically 1.5–2A above standby draw — in the first 200ms of keying. A new cell shipped at storage voltage (around 3.7V per cell) has higher internal impedance than a fully cycled cell. The BMS reads the resulting voltage sag as an unsafe drop and trips the overcurrent protection. Run two full charge-discharge cycles before field use and the impedance drops to normal operating range.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected on a fresh pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe DP505 uses a voltage-threshold bar indicator — each bar corresponds to a voltage band, not a calibrated capacity reading. A new cell at storage voltage sits at roughly 3.75V per cell, which falls into the second or third bar threshold rather than full. This is not a fault with the pack. Charge the battery fully to 4.2V per cell before reading the indicator — all bars will display correctly once the cells reach peak charge voltage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426326216794,"sku":"BWCS-HTC502TW-1","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426326249562,"sku":"BWCS-HTC502TW-2","price":44.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426326282330,"sku":"BWCS-HTC502TW-3","price":48.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HTC502TW-1.webp?v=1779930634","url":"https:\/\/batteryweb.com\/products\/hytera-dp505-replacement-battery-74v-1500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}