{"product_id":"casio-tr-mini-replacement-battery-37v-1000mah-li-polymer","title":"Casio TR Mini Replacement Battery NP-11 3.7V 1000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCasio TR Mini \/ TR-M11 — 3.7V Li-Polymer Replacement Battery (NP-11A)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1000mAh lithium-polymer replacement for the Casio TR Mini and TR-M11 compact selfie cameras. It replaces OEM part numbers NP-11, NP-11A, and LIS1639CSPC. Slot it into either model — the connector and form factor are identical across the TR Mini lineup.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTR Mini and TR-M11 fitment:\u003c\/strong\u003e\n    Both cameras run the same 3.7V power rail with the same NP-11 footprint and contact orientation. The BMS in each body reads cell voltage through the same three-pin interface, so one battery covers both models 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 TR Mini body and monitored the BMS handshake on each charge cycle. The protection circuit engaged correctly at low-voltage cutoff, and the camera accepted the cell without throwing an error after one full charge from the OEM charger.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use charge protocol for TR Mini:\u003c\/strong\u003e\n    Charge this cell inside the TR Mini body — not a third-party external charger — before your first shoot. The TR Mini's BMS maps its battery-remaining display against a discharge curve it calibrates on the first in-body charge cycle. Skipping this step causes the indicator to read inaccurately from the start.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the TR Mini shows a dead-battery indicator on a partially charged replacement cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe TR Mini's fuel gauge maps battery percentage to voltage thresholds set against the original cell's discharge curve. A new lithium-polymer cell has a slightly different open-circuit voltage profile, especially in the upper charge range. The camera reads the unfamiliar voltage and flags it as low or exhausted, even when the cell is at 70–80% state of charge. One full in-body charge cycle recalibrates the threshold map and resolves the false low-battery warning.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping erratically on the TR Mini display after install\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eErratic percentage jumps — say, 60% dropping to 20% then bouncing back — point to the BMS reading voltage transients rather than a stable cell average. This happens when the replacement cell hasn't completed a full charge cycle inside the camera body, leaving the BMS without a calibrated reference point. It can also occur if the battery contacts inside the compartment are slightly oxidised, causing intermittent resistance. Clean the contacts with a dry cotton swab, then charge fully via the camera body until the indicator holds steady at 100V before shooting.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333632950362,"sku":"BWCS-CTR110MC-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43333632983130,"sku":"BWCS-CTR110MC-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43333633015898,"sku":"BWCS-CTR110MC-3","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CTR110MC-1.webp?v=1778212975","url":"https:\/\/batteryweb.com\/products\/casio-tr-mini-replacement-battery-37v-1000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}