{"product_id":"logitech-h800-replacement-battery-37v-230mah-li-polymer","title":"Logitech H800 Replacement Battery 3.7V 230mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLogitech H800 — 3.7V Li-Polymer Replacement Battery (533-000067)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 230mAh Li-Polymer cell replaces the internal battery in the Logitech H800 wireless headset. It fits the H800 only — a Bluetooth and USB-receiver headset used for office calls and audio. Install it when the original cell no longer powers the headset through a normal workday.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eH800 platform fit:\u003c\/strong\u003e\n    The H800 runs a single Li-Polymer cell at 3.7V nominal. The connector, BMS handshake, and physical footprint are specific to this model — the 27.96 × 28.08 × 6.50mm dimensions leave no room for substitution.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the H800's combined Bluetooth radio and audio draw. The BMS held cutoff at the correct floor voltage and did not trip under the dual load during sustained playback.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for the H800:\u003c\/strong\u003e\n    Seat the headset in the USB charging cradle and run a complete charge cycle before making a call. The H800's firmware recalibrates its talk-time estimate only after the base station logs a full charge from the new cell — skipping this gives a false low-battery warning inside the first hour.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the H800 cuts out mid-call even with a new battery installed\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe H800 runs its Bluetooth radio and audio codec simultaneously, which spikes current draw well above idle. A new Li-Polymer cell at storage voltage — typically around 3.8V — has not yet been conditioned and its internal resistance is still elevated. Under that combined load, voltage sags briefly below the BMS cutoff threshold, and the headset drops. The fix is not a reset — it is completing two to three full charge-discharge cycles so the cell's resistance stabilises and the sag stays above cutoff.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station shows solid charge light but headset dies after a few minutes\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when a new cell arrives at storage voltage and the base station's charge controller declares it full before a true full cycle completes. The headset then runs on a partially charged cell. Remove the headset, leave it off for 30 seconds, reseat it in the cradle, and let the charge indicator cycle through to green without interruption. If the base still reads full immediately on reseat, check that the cradle contacts are clean — oxidised pins break the charge circuit before the BMS can handshake correctly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43428155359322,"sku":"BWCS-LOH800SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43428155392090,"sku":"BWCS-LOH800SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43428155424858,"sku":"BWCS-LOH800SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LOH800SL_1.webp?v=1779934278","url":"https:\/\/batteryweb.com\/products\/logitech-h800-replacement-battery-37v-230mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}