{"product_id":"panasonic-wxc520-replacement-battery-108v-1200mah-ni-mh","title":"Panasonic WXC520 Replacement Battery 10.8V 1200mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePanasonic WXC520 \/ NX510 Series — 10.8V Ni-MH Replacement Battery (78691123968)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 10.8V, 1200mAh Ni-MH replacement battery for the Panasonic WXC520, WXC527, NX510, and PRV4 two-way radios. It replaces OEM part number 78691123968. Capacity figure is taken directly from product data: 1200mAh \/ 12.96Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWXC520 \/ NX510 \/ PRV4 platform fit:\u003c\/strong\u003e\n    These models share the same 10.8V three-cell Ni-MH pack architecture, identical connector pinout, and the same BMS handshake sequence — which is why one part number covers the group. Swapping between them does not require firmware or charger changes.\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 PTT transmit loads on the WXC520 dock. The BMS handled transmit current spikes without tripping, and the pack accepted a full charge without fault LEDs on the standard Panasonic drop-in charger.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst insertion on the WXC520 charger dock:\u003c\/strong\u003e\n    If the dock shows a fault or amber LED on first insertion, remove the pack, wipe the contact strip with a dry cloth, and reseat firmly. The Panasonic platform runs a contact-clean cycle to verify BMS handshake voltage before it begins charging — a loose or oxidised contact will block this step entirely.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWXC520 cutting out mid-transmission on a fresh pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells at storage charge sit around 1.2V per cell — lower than a fully cycled pack. When PTT is pressed, the transmit current spike can pull the pack voltage below the BMS cutoff threshold before the cells have been conditioned. This triggers a protection cut that looks like a dead radio, not a low-battery indicator. Run one full charge cycle before field use to bring all three cells to their nominal voltage and stabilise internal impedance. After that first cycle, mid-transmission cutouts from this cause stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected after a full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe WXC520 uses a voltage-threshold bar indicator — it reads resting pack voltage against fixed cutoff points, not a fuel gauge chip. A new Ni-MH pack at storage voltage reads lower than a conditioned cell, so the radio displays one bar fewer even after the charger shows green. This is not a capacity fault. Complete one full discharge-and-charge cycle on the Panasonic dock and the resting voltage will rise to match the threshold for the correct bar count — typically above 11.5V on a healthy 10.8V Ni-MH pack.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426321596506,"sku":"BWCS-UPX500TW-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426321629274,"sku":"BWCS-UPX500TW-2","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426321662042,"sku":"BWCS-UPX500TW-3","price":55.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-UPX500TW-1.webp?v=1779930681","url":"https:\/\/batteryweb.com\/products\/panasonic-wxc520-replacement-battery-108v-1200mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}