{"product_id":"switel-wtf732-replacement-battery-48v-700mah-ni-mh","title":"Switel WTF732 Replacement Battery BP40 4.8V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSwitel WTF732 \/ WTF735 — 4.8V Ni-MH Replacement Battery (BP40)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 4.8V, 700mAh Ni-MH battery pack for the Switel WTF732 and WTF735 two-way radios. It replaces OEM part BP40 directly. The pack slots into the same battery compartment and connects through the same contact pins as the original.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWTF732 and WTF735 compatibility:\u003c\/strong\u003e\n    Both models run the same 4.8V four-cell Ni-MH architecture and use the identical BP40 form factor. The contact layout, housing dimensions, and voltage rail are shared across the pair, so a single replacement covers either unit.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled the pack through charge and transmit load on a WTF732 dock. The BMS handled the PTT current spike without tripping, and the charger transitioned from charge to trickle at the expected voltage threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle contact check on the WTF732 dock:\u003c\/strong\u003e\n    If the dock LED flickers or shows a fault on first insertion, remove the pack, wipe the metal contact strip with a dry cloth, and reseat it firmly. The dock requires a clean contact surface to register the new pack's voltage and begin the charge cycle.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the WTF732 cuts out mid-transmission on a new BP40\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new Ni-MH cell ships at storage voltage — typically 1.1–1.15V per cell, which puts a four-cell pack around 4.4–4.6V. That sits below the WTF732's transmit threshold under load. When you press PTT, the radio draws a sharp current spike and the cell voltage sags further, causing the radio to cut transmission. The fix is to run a full charge cycle before first use. After one complete charge the pack stabilises at 4.8V resting and the transmit cutout stops.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected on a fresh BP40\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe WTF732 uses a simple voltage-threshold bar indicator — each bar maps to a voltage bracket, not a capacity percentage. A new pack at storage voltage reads one bracket lower than a fully charged pack, so the radio displays one bar short even though the cells are not depleted. This is not a faulty battery. Charge the pack fully and the indicator will step up to the correct bar count. If it does not after a full charge, check that the contact pins are clean and making solid contact with the pack.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426370781274,"sku":"BWCS-GXT200TW-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426370814042,"sku":"BWCS-GXT200TW-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426370846810,"sku":"BWCS-GXT200TW-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GXT200TW-1.webp?v=1779931069","url":"https:\/\/batteryweb.com\/products\/switel-wtf732-replacement-battery-48v-700mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}