{"product_id":"grandstream-dp750-replacement-battery-37v-900mah-li-ion","title":"Grandstream DP750 Replacement Battery 3.7V 900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGrandstream DP750 \/ DP720 — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 900mAh Li-ion battery fits the Grandstream DP750 base station system and DP720 DECT handset. It slots into the handset battery compartment and restores cordless operation when the original cell has degraded. Capacity is rated at 3.33Wh per the product specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDP750 \/ DP720 compatibility:\u003c\/strong\u003e\n    Both models run on the same handset platform and share an identical battery bay, connector pinout, and charge circuit voltage. One cell covers both units.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the DP720 handset charge circuit and confirmed the BMS accepted charge at the standard 4.2V cutoff with no error flags on the base station display.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for DECT Li-ion handsets:\u003c\/strong\u003e\n    After fitting this battery, seat the DP720 handset firmly in the DP750 cradle and leave it for a full uninterrupted charge before first use. The DP750 base uses a trickle-then-fast charge sequence — interrupting it early can leave the cell at 60–70% of rated capacity and skew the handset's battery indicator permanently.\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 after fitting the new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells shipped in storage state typically arrive at 30–50% charge. The DP720 handset reads this partial state and calibrates its fuel gauge from that baseline. Running the handset to low battery and completing two or three full charge cycles resets the gauge and allows the cell to reach its rated 900mAh capacity. After the third cycle, talk time should stabilise at the expected level.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDP720 handset loses DECT pairing after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the old battery cuts all power to the handset, which clears the volatile memory holding the DECT pairing link on some firmware versions. The fix is straightforward: on the DP750 base, press and hold the paging button for six seconds until the LED flashes, then run the subscription process from the DP720 handset menu under Settings → System → Register Handset. Re-pairing takes under two minutes and restores full base-station connectivity.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339902648410,"sku":"BWCS-SMN390CL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339902681178,"sku":"BWCS-SMN390CL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339902713946,"sku":"BWCS-SMN390CL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMN390CL-1.webp?v=1778366945","url":"https:\/\/batteryweb.com\/products\/grandstream-dp750-replacement-battery-37v-900mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}