{"product_id":"canon-wordtank-z400-replacement-battery-37v-1600mah-li-polymer","title":"Canon Wordtank Z400 DB-10 Compatible Battery 3.7V 1600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCanon Wordtank Z400 \/ Z800 \/ Z900 Series — 3.7V Li-Polymer Replacement Battery (DB-10)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1600mAh Li-Polymer replacement for the Canon DB-10 battery. It fits the Wordtank Z400, Z410, Z800, and Z900 electronic dictionaries. Swap it in when the original no longer powers the device through a full reading session.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWordtank Z400 \/ Z410 \/ Z800 \/ Z900 compatibility:\u003c\/strong\u003e\n    All four models use the same DB-10 cell — same 3.7V rail, same flat Li-Polymer form factor, same connector footprint. One battery covers the full Wordtank Z-series range listed here.\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 the Z400 platform. The BMS held cutoff at the correct low-voltage threshold and accepted a full charge without flagging a fault on the device's power management circuit.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eContact seating after replacement:\u003c\/strong\u003e\n    The Wordtank Z-series uses a flat Li-Polymer pack with a friction-fit connector. After installing, press the battery firmly down before closing the rear cover. A connector that is even slightly unseated will prevent the device from powering on at all — not just cause reduced capacity.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Wordtank Z400 loses saved words and bookmarks after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Wordtank Z-series stores user data — saved vocabulary, bookmarks, and history — in RAM that is backed by battery voltage. When the battery is fully removed, that RAM loses power and the data is gone. This is not a fault with the replacement battery. Before pulling the old cell, export or photograph any saved content you need. Once the new DB-10 is seated and the device powers on, you can re-enter saved words manually.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBacklight not working after fitting a new DB-10\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe backlight circuit on the Wordtank Z400 draws more current than the base display and requires the battery to be above a minimum threshold before it activates. If the replacement cell shipped in a partially discharged state, the display may work but the backlight stays off. Charge the battery fully via the device's USB port before testing backlight function. Once the cell reaches a full charge, the backlight should respond normally to the brightness control.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360135086170,"sku":"BWCS-CTZ400SL-1","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360135118938,"sku":"BWCS-CTZ400SL-2","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360135151706,"sku":"BWCS-CTZ400SL-3","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CTZ400SL-1.webp?v=1778610901","url":"https:\/\/batteryweb.com\/products\/canon-wordtank-z400-replacement-battery-37v-1600mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}