{"product_id":"midland-g-28-replacement-battery-72v-700mah-ni-mh","title":"Midland G-28 Compatible Battery 7.2V 700mAh Ni-MH 20-555","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMidland G-28 \/ G-30 — 7.2V Ni-MH Replacement Battery (20-555)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.2V, 700mAh Ni-MH replacement battery for the Midland G-28 and G-30 handheld two-way radios. It uses OEM part number 20-555 and fits directly into the battery compartment on both models. Voltage and capacity match the original Midland specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eG-28 and G-30 compatibility:\u003c\/strong\u003e\n    Both radios share the same battery bay dimensions, contact arrangement, and 7.2V supply rail. One battery fits both units without adapters or modifications.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge and discharge cycles on the G-28 platform. The BMS held stable voltage under PTT transmit current spikes without tripping into protection mode.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst insertion after storage:\u003c\/strong\u003e\n    Ni-MH cells ship at partial charge. If the radio powers on but shows only one bar, place it on charge immediately — do not key up and transmit at full power until the first charge cycle completes. Transmitting at low cell voltage accelerates early capacity fade in Ni-MH chemistry.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the G-28 cuts out mid-transmission on a freshly inserted battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells at storage voltage sit around 1.1–1.2V per cell. Under PTT transmit load, that voltage sags sharply. The G-28's low-voltage cutoff circuit reads that sag as a depleted pack and drops the RF output or shuts transmission entirely. This is not a faulty battery — it is the protection circuit doing its job on an uncharged cell. Charge the pack fully before the first transmission and the cutout behaviour stops.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator stuck on one bar after a full overnight charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe G-28 uses a simple voltage-threshold bar indicator — it reads resting cell voltage and maps that to bars on the display. A new Ni-MH pack that has never been cycled can show a suppressed resting voltage even after a full charge, because the cells need one or two complete charge-discharge cycles to reach their rated capacity. Remove the battery, leave it out for two minutes, and reinsert it. If the indicator still reads low after a second full charge cycle, check that the contact strip on the battery is clean and making firm contact with the radio's terminal plate.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426369503322,"sku":"BWCS-MIG28TW-1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426369536090,"sku":"BWCS-MIG28TW-2","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426369568858,"sku":"BWCS-MIG28TW-3","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MIG28TW-1.webp?v=1779931027","url":"https:\/\/batteryweb.com\/products\/midland-g-28-replacement-battery-72v-700mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}