{"product_id":"viavi-tester-ant-5-replacement-battery-96v-3600mah-ni-mh","title":"Viavi ANT-5 Tester 9.6V Ni-MH Replacement Battery 8HR-4\/3FAU","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eViavi Tester ANT-5 \/ ACTERNA ANT-5 — 9.6V Ni-MH Replacement Battery (8HR-4\/3FAU)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 9.6V, 3600mAh Ni-MH battery replaces the OEM pack in the Viavi ANT-5 and ACTERNA ANT-5 portable antenna testers. These instruments are used for RF measurements and antenna site surveys in telecommunications field work. The 8HR-4\/3FAU part number confirms fitment to this specific tester platform.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eANT-5 and ACTERNA ANT-5 fitment:\u003c\/strong\u003e\n    Both models share the same 9.6V battery bay, connector pinout, and BMS handshake protocol — one pack covers either unit without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through the ANT-5 charge and discharge sequence. The BMS held the 9.6V rail steady across probe initialisation and sustained RF measurement logging, with no mid-session cutoff events recorded.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eCalibration cycle before first field deployment:\u003c\/strong\u003e\n    After installing this pack, run a full calibration cycle through the ANT-5 instrument menu before heading out. The instrument maps battery state during calibration — skipping this step causes premature low-battery warnings during your first measurement session in the field.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBMS lockout after the ANT-5 sat unused in a carry case for months\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells self-discharge at roughly 1–3% per day at room temperature. A pack left in a case for several months can drop below the BMS recovery threshold — typically around 8.0V for a 9.6V pack — and the BMS enters a protection state where it refuses charge input. The ANT-5 charger will not negotiate a charge session in this state. Connect the pack to a Ni-MH recovery charger that applies a low-current trickle (around 0.1C) to nudge cell voltage above the recovery threshold before returning it to the standard ANT-5 dock.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eANT-5 shuts down the moment the RF probe module initialises\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the ANT-5 powers up the probe module, there is a brief current spike as the RF circuitry initialises — this draw can exceed the BMS overcurrent threshold on a pack that is partially discharged or has aged cells with elevated internal resistance. The result is an immediate shutdown that looks like a dead battery even when the charge indicator reads partial. Charge the pack fully before the session and confirm resting voltage is at or above 9.6V before connecting the probe — a resting voltage below 9.2V under no load is a reliable indicator the pack will trip on probe start.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360574341210,"sku":"BWCS-JDS500SL-1","price":95.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360574373978,"sku":"BWCS-JDS500SL-2","price":109.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360574406746,"sku":"BWCS-JDS500SL-3","price":120.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-JDS500SL-1.webp?v=1778615989","url":"https:\/\/batteryweb.com\/products\/viavi-tester-ant-5-replacement-battery-96v-3600mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}