{"product_id":"sony-ericsson-hbh-608-replacement-battery-37v-140mah-li-polymer","title":"Sony Ericsson HBH-608 Replacement Battery 3.7V 140mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSony Ericsson HBH-608 — 3.7V Li-Polymer Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 140mAh Li-Polymer battery for the Sony Ericsson HBH-608 Bluetooth mono headset. It replaces the original cell when charge retention has dropped to the point where the headset no longer completes calls. Dimensions are 31.83 × 11.03 × 4.00mm — a direct physical match to the original cell cavity.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHBH-608 fit:\u003c\/strong\u003e\n    The HBH-608 runs a single Li-Polymer cell at 3.7V nominal. This battery matches that voltage rail and physical footprint. The onboard BMS in the headset reads cell state on connection — voltage must sit within the expected range for the headset to power on at all.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the HBH-608's charge and discharge circuit. The BMS accepted the cell without error, and charge current tapered correctly at full capacity. No voltage spike or cutoff anomaly was recorded during the test.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge on the HBH-608:\u003c\/strong\u003e\n    Charge the headset in its cradle for a complete cycle before making a call. The headset's talk-time counter calibrates against the cell during the first full charge — skipping this step produces a misread state-of-charge 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\"\u003eTalk time shorter than rated on the first few cycles\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA fresh Li-Polymer cell does not hit rated capacity on cycle one. Electrochemical activation across the polymer electrolyte takes three to five charge-discharge cycles to stabilise. On the HBH-608, this shows as a shorter-than-expected session before the low-battery tone. Run the headset through at least three full cycles before drawing any conclusions about capacity. By cycle five, output should be at or near the 140mAh rating.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHeadset cuts out mid-call even with a new battery installed\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe HBH-608 draws from the cell simultaneously for audio processing and the Bluetooth radio — combined load that spikes during transmission bursts. If the replacement cell was stored for an extended period and shipped at storage voltage, the BMS may trigger a low-voltage cutoff under that combined draw before a full charge has been completed. The fix is straightforward: charge the headset to 100% before the first use. If cutouts persist after a full charge cycle, check that the cell contacts in the headset housing are clean and seated flat — a partial contact raises internal resistance enough to cause voltage sag under load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43428155883610,"sku":"BWCS-PEX340SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43428155916378,"sku":"BWCS-PEX340SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43428155949146,"sku":"BWCS-PEX340SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PEX340SL_1.webp?v=1779934278","url":"https:\/\/batteryweb.com\/products\/sony-ericsson-hbh-608-replacement-battery-37v-140mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}