{"product_id":"e-plus-pocket-pda-replacement-battery-37v-2800mah-li-ion","title":"E-Plus Pocket PDA Replacement Battery 3.7V 2800mAh WIZA16","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eE-Plus Pocket PDA — 3.7V Li-ion Replacement Battery (WIZA16)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V Li-ion battery replaces the original WIZA16 cell in the E-Plus Pocket PDA. Capacity is 2800mAh (10.36Wh). It restores power to the handheld PDA used for contacts, scheduling, and information management when the original cell has degraded or failed.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePocket PDA platform fit:\u003c\/strong\u003e\n    The WIZA16 part number ties this cell to the Pocket PDA's specific connector footprint and BMS handshake. The 3.7V nominal rail matches the device's power management IC directly — no voltage conversion in the chain.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on a Pocket PDA unit. The BMS accepted the cell without fault codes, and the charge IC reached full termination current correctly without tripping overvoltage protection.\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 any fast-charge accessory and run one full discharge-to-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes load into an uncalibrated state.\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 Pocket PDA after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC is still calibrated to the old cell's discharge curve. The new cell hits a voltage cliff under load — typically when the CPU ramps up or the backlight peaks — and the BMS cuts output before the percentage reaches zero. The device reads 25% but the cell voltage has already dropped below the safe threshold under that load spike. One full discharge cycle from 100% to automatic shutdown, followed by a full charge, resets the coulomb counter to the new cell's actual curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eE-Plus Pocket PDA not powering on after sitting in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge in storage. If the Pocket PDA sat unused for several months, the cell voltage may have dropped below 2.5V per cell — the threshold where most BMS circuits lock out to prevent damage. Standard charging will not wake a locked-out BMS. Connect the device to its original charger and leave it for 15–30 minutes without attempting to power it on — the charge IC uses a low-current recovery trickle below 3.0V to bring the cell back above the BMS unlock threshold before normal charging resumes.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405261832282,"sku":"BWCS-WIZA16HL-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405261865050,"sku":"BWCS-WIZA16HL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405261897818,"sku":"BWCS-WIZA16HL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-WIZA16HL-1.webp?v=1779370368","url":"https:\/\/batteryweb.com\/products\/e-plus-pocket-pda-replacement-battery-37v-2800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}