{"product_id":"motorola-vz-10-replacement-battery-74v-1600mah-li-ion","title":"Motorola FNB-Z165 Replacement Battery 7.4V 1600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMotorola VZ-10 \/ VZ-18 \/ VZ-12 — 7.4V Li-ion Replacement Battery (FNB-Z165)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThe FNB-Z165 is a 7.4V, 1600mAh Li-ion battery for the Motorola VZ-10, VZ-18, and VZ-12 two-way radios. It slots directly into these compact handhelds and communicates with the radio's BMS handshake over the same connector as the original pack. Capacity is rated at 11.84Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVZ-10, VZ-18, and VZ-12 compatibility:\u003c\/strong\u003e\n    These three radios share the same battery bay geometry, contact pin layout, and 7.4V power rail. The FNB-Z165 BMS is tuned to that shared voltage profile, so the radio's protection circuit accepts the pack without triggering a fault condition on power-up.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through transmit loads on the VZ platform. The BMS held cutoff correctly at low-cell threshold and did not trip during the PTT current spike at full RF output. Cell voltage balanced within two cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst insertion on a Motorola dock:\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 Motorola VZ dock requires a clean contact cycle to complete the BMS handshake before it will begin charging.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the VZ-10 cuts out mid-transmission on a freshly inserted FNB-Z165\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-ion cell ships at storage voltage — typically 3.6–3.7V per cell, not the 4.2V peak of a full charge. When PTT is pressed, the VZ-10 pulls a sharp transmit current spike. At storage voltage, internal cell resistance is higher, which causes a momentary voltage dip. If that dip crosses the radio's low-voltage cutoff threshold, the radio drops the transmission or mutes the output entirely. The fix is to charge the pack fully before your first use shift — one complete charge cycle brings cell voltage and impedance to operating spec.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected after fitting the FNB-Z165\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe VZ series uses a simple voltage-threshold bar indicator — each bar maps to a specific resting voltage range. A new pack at storage voltage reads lower on that scale than a fully charged pack, so the display shows one bar below what you'd expect. This is not a faulty cell or a capacity issue. Charge the battery fully in the dock until the charge LED goes solid green, then reinsert — the indicator will reflect the correct resting voltage of approximately 8.3–8.4V and display accordingly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426290597978,"sku":"BWCS-MTZ180TW-1","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426290630746,"sku":"BWCS-MTZ180TW-2","price":44.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426290663514,"sku":"BWCS-MTZ180TW-3","price":48.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTZ180TW-1.webp?v=1779930601","url":"https:\/\/batteryweb.com\/products\/motorola-vz-10-replacement-battery-74v-1600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}