{"product_id":"casio-exilim-ex-ex-s200bk-replacement-battery-37v-550mah-li-ion","title":"Casio NP-120 Exilim Replacement Battery 3.7V 550mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCasio Exilim EX-S200 Series — 3.7V Li-ion Replacement Battery (NP-120)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 550mAh Li-ion cell built to the NP-120 spec. It fits the Casio Exilim EX-S200, EX-S200BK, EX-S200BE, and related Exilim compact models. If your original NP-120 no longer holds a charge, this cell swaps directly into the same battery compartment.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEX-S200 series compatibility:\u003c\/strong\u003e\n    These Exilim models share the same 3.7V battery rail, NP-120 form factor, and BMS handshake protocol. One cell covers the full range listed without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the EX-S200 body and an OEM Casio charger. The BMS accepted the cell on first insertion, voltage regulation held steady through full discharge, and capacity read correctly at 550mAh.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle initialisation on the EX-S200:\u003c\/strong\u003e\n    Run the first full charge through the camera body or OEM Casio charger rather than a third-party USB adapter. Some Exilim BMS firmware maps the battery-remaining indicator during this first charge cycle — skipping it can cause percentage display drift through the cell's early life.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping on the EX-S200 display after installing a new NP-120\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Exilim EX-S200 maps its battery indicator against the discharge curve of the original NP-120 cell. A new cell's discharge curve doesn't always align with the camera's stored voltage thresholds until it has completed at least one full charge-discharge cycle. This mismatch causes the indicator to jump — for example, showing 60% then dropping to 20% without warning. Run two full charge-to-empty cycles in the camera body to let the BMS recalibrate its threshold mapping. After that, the indicator stabilises against the new cell's actual curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFlash not fully recycling between shots near end of charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe EX-S200's flash capacitor pulls a high recharge current immediately after each shot. When cell voltage drops below roughly 3.5V, that recharge current causes a brief voltage sag that the BMS registers as a low-power condition. The camera either delays the next shot or fires an undercharged flash, producing noticeably dimmer output. This isn't a faulty cell — it's the BMS protecting the circuit. Recharge the battery before the indicator reaches one bar to keep flash recycling at full output.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333809438810,"sku":"BWCS-NP120CA-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43333809471578,"sku":"BWCS-NP120CA-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43333809504346,"sku":"BWCS-NP120CA-3","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NP120CA-1.webp?v=1778213259","url":"https:\/\/batteryweb.com\/products\/casio-exilim-ex-ex-s200bk-replacement-battery-37v-550mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}