{"product_id":"hyt-pd500-replacement-battery-74v-1500mah-li-ion","title":"HYT PD500 Replacement Battery 7.4V 1500mAh BL1502","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHYT PD500 \/ PD502 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 OEM part numbers BL1502, BL1504, and BL2010 in HYT PD500, PD502, PD505, and PD506 portable two-way radios. It fits the full PD500 series used by security, construction, and emergency services teams. Capacity is 1500mAh (11.1Wh), matching the standard OEM specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePD500 series fit:\u003c\/strong\u003e\n    The PD500, PD502, PD505, and PD506 share the same battery bay dimensions, contact pitch, and BMS handshake protocol — one pack covers the platform. The connector housing and latch position are identical across these models, so the same battery seats and locks correctly in all of them.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through charge and transmit load on a PD500 body. The BMS held steady through repeated PTT keying without tripping overcurrent cutoff, and the charger dock accepted the handshake and progressed to full charge normally.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst insertion into the charger dock:\u003c\/strong\u003e\n    If the dock LED shows a fault on first insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The HYT charger platform 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\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new cell ships at storage voltage — typically around 3.6–3.7V per cell, not a full 4.2V. When you press PTT, the radio draws a sharp current spike to power the RF output stage. If the cell hasn't been charged first, that spike can pull the pack voltage low enough to trip the BMS overcurrent threshold before the transmission completes. Charge the pack fully before first field use. After a full charge cycle, the BMS handles PTT spikes without interruption.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator stuck on two bars even after a full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe PD500 uses a voltage-threshold bar indicator — it reads pack voltage at rest and maps it to a bar count. A new cell at storage voltage will show fewer bars than expected even if the pack is functional. This isn't a fault in the battery; it's the radio reading a voltage that hasn't reached the upper threshold yet. Run the pack through one full charge in the dock until the LED goes green, then reinsert into the radio — the indicator will move to the correct bar count.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426326052954,"sku":"BWCS-HTC502TW-1","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426326085722,"sku":"BWCS-HTC502TW-2","price":44.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426326118490,"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\/hyt-pd500-replacement-battery-74v-1500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}