{"product_id":"albrecht-tectalk-outdoor-replacement-battery-37v-1100mah-li-ion","title":"Albrecht CB28 Tectalk Outdoor Replacement Battery 3.7V 1100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAlbrecht Tectalk Outdoor — 3.7V Li-ion Replacement Battery (CB28)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1100mAh Li-ion battery for the Albrecht Tectalk Outdoor two-way radio. It replaces OEM part number CB28 and fits the Tectalk Outdoor handset directly. At 53.00 × 33.90 × 5.70mm, the pack matches the original form factor and connector orientation.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTectalk Outdoor fit:\u003c\/strong\u003e\n    The Tectalk Outdoor runs a single-cell 3.7V rail with a low-profile flat pack format. This battery matches that rail voltage and connector position so no adapter or modification is needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through PTT transmit loads on the bench. The BMS held stable under the current spike at key-up and recovered voltage cleanly on release — no false cutoff was triggered during repeated transmit bursts.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eContact strip condition at first insertion:\u003c\/strong\u003e\n    If the charger shows a fault or blink on first insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat it firmly. The Tectalk Outdoor charger dock requires a clean contact surface to complete the BMS handshake before charge current 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 Tectalk Outdoor cuts out mid-transmission on a freshly inserted CB28\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-ion cell ships at storage voltage — typically around 3.6–3.7V, not a full charge. When the radio keys up, the transmit current spike briefly pulls cell voltage below the BMS low-voltage cutoff threshold. The BMS trips and drops the pack offline, cutting audio mid-transmission. This is not a faulty battery. Charge the pack fully before the first use and the cutoff threshold will have adequate headroom during TX.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected after fitting the CB28\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Tectalk Outdoor uses a voltage-threshold bar display — each bar corresponds to a voltage band, not a percentage from a fuel gauge chip. A new pack at storage voltage sits in the second-highest band, so the display shows one bar short of full even though nothing is wrong with the cell. Charge the battery fully in the dock until the charge LED goes solid green, then reinsert — the indicator will read correctly at that point, typically at or above 4.1V resting voltage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426293448794,"sku":"BWCS-TMR446TW-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426293481562,"sku":"BWCS-TMR446TW-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426293514330,"sku":"BWCS-TMR446TW-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TMR446TW-1.webp?v=1779930602","url":"https:\/\/batteryweb.com\/products\/albrecht-tectalk-outdoor-replacement-battery-37v-1100mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}