{"product_id":"tunstall-dect-handset-7202-replacement-battery-37v-950mah-li-ion","title":"Tunstall Dect Handset 7202 Compatible Battery 3.7V 950mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTunstall Dect Handset 7202 \/ 7212 \/ 7722 \/ 7202P — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 950mAh Li-ion battery for the Tunstall Dect handset range used in care and healthcare facilities. It fits the Dect handset 7202, 7212, 7722, and 7202P. Physical dimensions are 51.54 × 32.75 × 8.30mm — check these against your existing cell before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDect 7202 \/ 7212 \/ 7722 \/ 7202P compatibility:\u003c\/strong\u003e\n    These four handsets share the same 3.7V Li-ion cell format, connector pinout, and BMS charge acceptance threshold, which is why one battery covers the full group.\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 Tunstall base station circuit. The BMS accepted charge cleanly from the base, held the protection cutoffs at expected low-voltage limits, and showed no false overcharge trips.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Li-ion care-setting handsets:\u003c\/strong\u003e\n    After fitting this battery, seat the handset in its base and leave it for a full uninterrupted charge before first use. Tunstall base stations use a trickle-top-up charge profile — partial or interrupted first charges can cause the BMS to report a lower usable capacity than the cell actually holds.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Tunstall Dect 7202 loses range after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eDECT RF transmission draws a burst of current every 10ms during active calls. If a replacement Li-ion cell has high internal resistance — common in poorly stored stock — the terminal voltage sags under that burst load. The handset's transmit power drops to compensate, and effective range shrinks noticeably. A fresh, correctly stored cell with low internal resistance maintains a stable voltage rail under RF burst load, keeping transmit power at its rated level. If range problems persist after fitting this battery, fully cycle the handset twice — charge to full, use to low, recharge — before concluding there is a range issue.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station charge light stays off or shows error on a new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells that have self-discharged during storage can drop below the base station's charge-acceptance voltage threshold — typically around 3.0V for this chemistry. When the base sees a voltage below that threshold, it withholds charge as a protection measure and may show no activity or an error indicator. Remove the handset, wait 30 seconds, and reseat it firmly — this resets the base's charge controller and often triggers a fresh acceptance check. If the base still does not charge, use a bench charger or a compatible USB Li-ion charging board to pre-charge the cell above 3.2V, then return it to the Tunstall base to complete the charge normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339919982682,"sku":"BWCS-CIP502CL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339920015450,"sku":"BWCS-CIP502CL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339920048218,"sku":"BWCS-CIP502CL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CIP502CL-1.webp?v=1778366983","url":"https:\/\/batteryweb.com\/products\/tunstall-dect-handset-7202-replacement-battery-37v-950mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}