{"product_id":"v-tech-ls5105-replacement-battery-36v-500mah-ni-mh","title":"V Tech LS5105 Cordless Phone Compatible Battery 3.6V 500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eV Tech LS5105 \/ LS5145 \/ LS5146 — 3.6V Ni-MH Replacement Battery (89-1333-01-00)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 500mAh Ni-MH battery for the V Tech LS5105, LS5145, and LS5146 cordless phone handsets. It replaces OEM part numbers 89-1333-01-00, BT5632, BT5872, and 80-1333-00-00. The physical dimensions are 35.81 × 25.63 × 8.74mm — confirm these against your handset bay before fitting.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLS5105 \/ LS5145 \/ LS5146 fit:\u003c\/strong\u003e\n    All three handsets share the same 3.6V single-cell Ni-MH bay, connector pinout, and charge circuit. One battery spec covers the whole family — no adapter or wiring change needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through the V Tech charge circuit and confirmed the BMS accepted charge without triggering an error state. Voltage held above the 3.2V handset cutoff through full discharge cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Ni-MH cordless packs:\u003c\/strong\u003e\n    Place the handset in the base for a full 16 hours before first use. Ni-MH cells shipped from storage are partially discharged — a short first charge will not bring them to rated capacity and talk time will appear low until 3–5 full cycles complete.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRange loss on the LS5105 after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eDECT transmit power draws brief current spikes that a low-state Ni-MH pack cannot sustain cleanly. When the cell voltage sags under RF load, the handset reduces transmit power to protect the circuit — range drops noticeably as a result. This is not a fault with the replacement battery. After 3–5 full charge and discharge cycles, internal resistance drops and voltage sag under RF load decreases. Range returns to normal once the pack has been properly conditioned.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHandset not pairing with the base after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving power from a DECT handset completely can wipe the stored pairing data on some V Tech models. The handset and base need to re-register before calls will connect. To re-register, press and hold the Handset Locator button on the base for 4 seconds until the handset shows a pairing prompt, then follow the on-screen steps. Once paired, the handset should show full signal bars within a few seconds.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43340090343514,"sku":"BWCS-UTS145CL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43340090376282,"sku":"BWCS-UTS145CL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43340090409050,"sku":"BWCS-UTS145CL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-UTS145CL-1.webp?v=1778367047","url":"https:\/\/batteryweb.com\/products\/v-tech-ls5105-replacement-battery-36v-500mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}