{"product_id":"texas-instruments-ti-planet-replacement-battery-37v-1800mah-li-ion","title":"Texas Instruments TI-Planet 3.7V Replacement Battery 1800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTexas Instruments TI-Planet \/ TI-Nspire Navigator Wireless Cradle WiFi — 3.7V Li-ion Replacement Battery (3.7L1750BPC)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1800mAh Li-ion replacement battery for the Texas Instruments TI-Planet calculator and the TI-Nspire Navigator Wireless Cradle WiFi. It replaces OEM part number 3.7L1750BPC. Use this when the original cell no longer holds a charge or the device fails to power on.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTI-Planet and TI-Nspire Navigator compatibility:\u003c\/strong\u003e\n    Both devices share the same 3.7V single-cell Li-ion power rail and use the same connector pinout and BMS handshake. One battery covers both units 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 charge and discharge on the TI-Nspire Navigator cradle. The BMS accepted the cell without fault codes, and voltage stabilised at 4.18V at full charge — within the expected range for this chemistry.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eRAM data export before swap:\u003c\/strong\u003e\n    Export or photograph all stored programs and variables before removing the old battery. The TI-Planet stores user data in RAM that runs directly off the main cell. Pulling the battery without backing up first wipes everything — OS settings, programs, and saved variables included.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTI-Planet losing stored programs after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe TI-Planet holds user programs and variables in volatile RAM. That RAM is powered by the main Li-ion cell — not a separate backup cell. The moment voltage drops to zero during a swap, RAM state is lost. There is no recovery path once the old cell is out and data is gone. Back up via TI-Connect CE or a USB cable to a PC before removing the battery.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDisplay reading low battery on a freshly installed cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eReplacement Li-ion cells ship in storage mode, typically at 3.6–3.7V — below the threshold the TI-Planet firmware uses to flag a healthy charge. The low-battery indicator is triggered by voltage, not actual capacity. Plug the device into a charger and let it complete a full charge cycle to 4.2V. The warning clears once the cell reaches operating voltage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333539430490,"sku":"BWCS-TEX750SL-1","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43333539463258,"sku":"BWCS-TEX750SL-2","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43333539496026,"sku":"BWCS-TEX750SL-3","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TEX750SL-1.webp?v=1778212956","url":"https:\/\/batteryweb.com\/products\/texas-instruments-ti-planet-replacement-battery-37v-1800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}