{"product_id":"detewe-aastra-replacement-battery-24v-700mah-ni-mh","title":"DeTeWe Aastra 2.4V Ni-MH Cordless Phone Replacement Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDeTeWe Aastra — 2.4V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 2.4V, 700mAh Ni-MH replacement battery for DeTeWe Aastra cordless DECT handsets. It fits into Aastra-series handsets where the original pack has degraded and no longer holds a usable charge. Voltage and cell chemistry match the original specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAastra handset compatibility:\u003c\/strong\u003e\n    Aastra cordless handsets run a 2.4V two-cell Ni-MH configuration to match the base station's charge circuit. Swapping to a pack with mismatched voltage or chemistry will cause the base to flag a charge fault or simply refuse to top up the battery.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through charge and discharge on a DECT handset base. The BMS accepted the Ni-MH voltage profile without error, and the pack reached stable capacity by the fourth cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Ni-MH handsets:\u003c\/strong\u003e\n    After installing, seat the handset in the base and leave it for a full 16 hours before first use. Ni-MH cells shipped in partial-discharge state need a slow, uninterrupted charge to initialise capacity — skipping this step means the first few cycles will feel short.\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 the original battery after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells don't arrive at full capacity out of the box. The electrochemical structure needs three to five full charge-discharge cycles before it reaches rated capacity. This is normal behaviour, not a defect. Run the handset until the low-battery indicator activates, then return it to the base for a full charge — repeat this for the first few cycles and talk time will increase noticeably.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station shows no charge or error light after fitting new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAastra base stations read the incoming pack voltage before starting a charge cycle. A Ni-MH pack stored for several months can drop below the base's acceptance threshold — typically under 2.0V — causing the base to flag an error instead of charging. Remove the handset, wait 30 seconds, and re-seat it firmly. If the error persists, use a separate Ni-MH charger to push the pack up to around 2.2V, then return it to the base to complete the charge normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43340001869914,"sku":"BWCS-AST135CL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43340001902682,"sku":"BWCS-AST135CL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43340001935450,"sku":"BWCS-AST135CL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AST135CL-1.webp?v=1778367024","url":"https:\/\/batteryweb.com\/products\/detewe-aastra-replacement-battery-24v-700mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}