{"product_id":"hyt-pd500-replacement-battery-74v-3350mah-li-ion","title":"HYT PD500 Replacement Battery BL1502 7.4V 3350mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHYT PD500 \/ PD502 \/ PD505 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 battery replacing OEM part numbers BL1502, BL1504, and BL2010. It fits the HYT PD500, PD502, PD505, PD506, and more than 21 additional PD-series digital portable radios. Voltage and capacity match the original HYT specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePD500-series platform fit:\u003c\/strong\u003e\n    The PD500, PD502, PD505, and PD506 all share the same battery bay geometry, contact pin layout, and BMS handshake protocol — which is why BL1502, BL1504, and BL2010 are interchangeable across this family. One pack covers the full series.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through full charge and discharge on PD500-series hardware. The BMS held steady through PTT transmit spikes, and the voltage-threshold bar indicator read correctly at each charge level without tripping overcurrent protection.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eContact strip seating on first insertion:\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 PD-series 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 PD500 cuts out mid-transmission on a new BL1502 pack\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen a new pack ships from storage, cell voltage typically sits between 3.6V and 3.7V per cell — below the fully charged 4.2V ceiling. Under the high current draw of a PTT transmit event, the BMS can register a momentary voltage sag and trigger overcurrent protection, cutting the transmission. This is not a faulty pack. Running two or three full charge cycles brings the cells to operating voltage and stabilises BMS response under transmit load.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator stuck on one bar after fitting a new BL1502\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe PD-series radio reads charge state through voltage thresholds, not a fuel gauge chip. A new pack at storage voltage reads near the bottom threshold, so the radio displays one bar even though the cells are not depleted. This is expected behaviour. Charge the pack fully — dock LED turns solid green — and the indicator will display the correct bar count once cell voltage reaches the upper threshold above 8.3V combined.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43303974305882,"sku":"BWCS-HTC502TX-1","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43303974338650,"sku":"BWCS-HTC502TX-2","price":70.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43303974371418,"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\/hyt-pd500-replacement-battery-74v-3350mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}