{"product_id":"mitsubishi-by-m1-replacement-battery-6v-2100mah-ni-mh","title":"Mitsubishi BY-M1 Replacement Battery 6V 2100mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMitsubishi BY-M1 \/ BY-M2 \/ BY-U1 \/ BY-U2 — 6V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 6V 2100mAh Ni-MH replacement battery for Mitsubishi digital cameras including the BY-M1, BY-M2, BY-U1, and BY-U2. It matches the original voltage and chemistry so the camera body and BMS receive the correct signal. Capacity is sourced from the product specification at 2100mAh (12.6Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBY-M1, BY-M2, BY-U1, BY-U2 platform fit:\u003c\/strong\u003e\n    These models share the same 6V Ni-MH power rail and connector format. The BMS in each body expects a Ni-MH discharge curve — swapping chemistry breaks the voltage-remaining map and causes false low-battery readings.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on a camera-equivalent 6V load. The BMS handshake completed without rejection, and the cell held within expected voltage range across the full discharge profile.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-install charge cycle on BY-M1 and BY-U series bodies:\u003c\/strong\u003e\n    Run one full charge cycle through the OEM charger or camera body before shooting. These Mitsubishi bodies map battery-remaining display to a calibrated Ni-MH discharge curve — a cold, uncalibrated cell will show erratic percentage readings until that first full cycle completes.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDead battery indicator on the BY-M1 with a partially charged replacement cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe BY-M1 reads remaining charge by tracking voltage thresholds across the Ni-MH discharge curve. A new cell that hasn't been through a full calibration cycle presents a slightly different resting voltage than the body expects at any given charge level. The camera interprets this mismatch as a depleted cell and throws the dead-battery indicator even when the cell has usable capacity. Running one complete charge-to-full cycle in the OEM charger before use resets that baseline and clears the false reading.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping erratically during a shoot\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells have a flatter discharge curve than Li-ion, and the BY-series indicator firmware is calibrated tightly to the original cell's curve shape. A replacement cell with a slightly different internal resistance will cause the voltage under load to dip and recover in ways the indicator wasn't mapped to handle. The result is percentage numbers that jump — sometimes 20 or 30 points — between shots. This settles after two to three full charge-discharge cycles as the BMS learns the new cell's actual behaviour. If it doesn't stabilise after three cycles, check resting voltage with a multimeter — it should read at or above 6.0V fully charged.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333891031130,"sku":"BWCS-NP55-1","price":35.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43333891063898,"sku":"BWCS-NP55-2","price":41.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43333891096666,"sku":"BWCS-NP55-3","price":45.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NP55-1.webp?v=1778213590","url":"https:\/\/batteryweb.com\/products\/mitsubishi-by-m1-replacement-battery-6v-2100mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}