{"product_id":"mitsubishi-trium-replacement-battery-36v-900mah-ni-mh","title":"Mitsubishi Trium 3HR-5\/3AAAU Replacement Battery 3.6V 900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMitsubishi Trium \/ GEO \/ Astral Series — 3.6V Ni-MH Replacement Battery (3HR-5\/3AAAU)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 900mAh Ni-MH replacement battery for the Mitsubishi Trium, GEO, Astral, Galaxy, and compatible models. It replaces OEM part numbers 3HR-5\/3AAAU, BW-14091420, and FZA-0001A. The cell fits the battery bay directly and restores the phone's ability to power up, hold a call, and run basic functions.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTrium platform compatibility:\u003c\/strong\u003e\n    The Trium, GEO, Astral, and Galaxy share the same 3.6V three-cell Ni-MH pack format and connector pinout. All models on this list draw from the same voltage rail and accept the same mechanical form factor — no adapter or modification needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on a Trium handset. The charge IC accepted the cell without fault flags, and voltage held steady under active call load across multiple cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eNi-MH first-cycle conditioning:\u003c\/strong\u003e\n    Unlike Li-ion, this Ni-MH cell benefits from a slow first charge at the phone's standard rate — avoid using an external rapid charger on the first cycle. This lets the cell reach full capacity and prevents early memory effect from an incomplete initial charge.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Trium reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Trium's fuel gauge IC builds its discharge curve against the original cell's internal resistance and capacity profile. A new cell has a different impedance, so the gauge reads the voltage incorrectly and reports inaccurate percentages from the first charge. This corrects itself after one complete discharge down to auto-shutoff followed by a full uninterrupted charge. After that cycle, the gauge recalibrates its reference points against the new cell's actual curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone shuts down suddenly at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells have a steeper voltage drop curve at lower states of charge compared to Li-ion. When the Trium's modem fires during a call or SMS send, the current draw causes a brief voltage sag — if the cell is below roughly 30% capacity, that sag can cross the shutdown threshold before the gauge registers it. This is not a faulty cell; it means the fuel gauge IC has not yet mapped the new cell's voltage cliff. Run one full discharge-to-shutoff cycle and recharge to 100% — the cutoff behaviour will stabilise at 3.6V nominal.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405159563354,"sku":"BWCS-MIT300SL-1","price":26.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43405159596122,"sku":"BWCS-MIT300SL-2","price":29.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43405159628890,"sku":"BWCS-MIT300SL-3","price":31.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MIT300SL-big.webp?v=1779370333","url":"https:\/\/batteryweb.com\/products\/mitsubishi-trium-replacement-battery-36v-900mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}