{"product_id":"krugermatz-km0416-replacement-battery-37v-1600mah-li-ion","title":"Kruger\u0026Matz KM0416 Replacement Battery 3.7V 1600mAh BP-4C-I","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eKruger\u0026amp;Matz KM0416 — 3.7V Li-ion Replacement Battery (BP-4C-I)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1600mAh Li-ion cell (OEM part BP-4C-I) for the Kruger\u0026amp;Matz KM0416 smartphone. It replaces the original battery when capacity has dropped or the cell has failed outright. Capacity and voltage match the original specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eKM0416 fit confirmation:\u003c\/strong\u003e\n    The BP-4C-I connector pinout and physical dimensions match the KM0416 battery bay. The BMS handshake voltage and charge termination thresholds align with what the KM0416 charge IC expects — no 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 charge and discharge under load conditions representative of the KM0416's modem and display draw. The BMS held cutoff correctly at both ends of the voltage window, and charge termination triggered cleanly without overrun.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one full discharge-charge cycle before enabling it again. The KM0416's fuel gauge IC calibrated its coulomb counter to the old cell's discharge curve — giving it one clean cycle on the new cell corrects that mapping before high-current charging begins.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the KM0416 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-ion cell has a slightly different internal resistance profile than the worn cell it replaces. Under peak load — modem transmission, screen at full brightness — the KM0416 can pull enough current to cause a momentary voltage sag on a new, uncalibrated cell. The fuel gauge IC still shows 20–30% remaining, but the instantaneous voltage drop crosses the hardware shutdown threshold. One full discharge-charge cycle with no fast charging lets the coulomb counter re-map the new cell's actual discharge curve, and these shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eKM0416 not powering on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge in storage, and if the BP-4C-I cell dropped below approximately 2.5V before installation, the BMS will have entered a lockout state to prevent damage. The phone will show no response — no charging indicator, no boot. Connect the phone to a wall charger rated at least 5V\/1A and leave it for 15–20 minutes without attempting to power it on. The BMS recovery circuit needs a trickle current to bring the cell back above the lockout threshold before normal charging can resume.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392047841370,"sku":"BWCS-KMZ416SL-1","price":26.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43392047874138,"sku":"BWCS-KMZ416SL-2","price":29.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43392047906906,"sku":"BWCS-KMZ416SL-3","price":32.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-KMZ416SL-1.webp?v=1779143125","url":"https:\/\/batteryweb.com\/products\/krugermatz-km0416-replacement-battery-37v-1600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}