{"product_id":"fluke-15b-replacement-battery-37v-650mah-li-polymer","title":"Fluke 15B Digital Multimeter Replacement Battery 3.7V 650mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eFluke 15B \/ 17B — 3.7V Li-Polymer Replacement Battery (HJ603040PL)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 650mAh Li-Polymer cell replaces the internal battery in the Fluke 15B and 17B digital multimeters. Both meters use the same HJ603040PL pack on a shared power rail with identical connector orientation. Capacity figure is 650mAh as listed — do not rely on third-party capacity claims for this slim-profile cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e15B and 17B shared platform:\u003c\/strong\u003e\n    Both meters run the same internal PCB power architecture and accept the same physical pack. The BMS handshake is tied to cell voltage, not a chip-authenticated ID, so this pack initialises without firmware rejection on either model.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled the pack through a cold-start draw sequence simulating probe initialisation. The BMS held the voltage rail without tripping cutoff during the brief current spike at meter power-up.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use calibration on the 15B and 17B:\u003c\/strong\u003e\n    After fitting this pack, run a full calibration cycle through the instrument menu before field use. Both meters map battery state during calibration — skipping this step causes premature low-battery warnings on the first measurement session, even with a fully charged cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBMS lockout after the 15B or 17B sat unused in a carry case for months\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells self-discharge slowly over time. If the original pack dropped below approximately 2.5V during extended storage, the BMS enters a locked protection state and blocks normal charging. The charger sees no load and stops. Applying a brief trickle charge at 0.05C can bring the cell back above the BMS recovery threshold — around 2.8V — after which normal CC\/CV charging resumes.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDisplay showing an inconsistent charge percentage after fitting a new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 15B and 17B estimate remaining charge by mapping current cell voltage against a stored discharge curve from the original pack. A fresh cell has a slightly different voltage-to-capacity curve than a depleted original. The meter's indicator recalibrates over the first one to two full charge-discharge cycles. Run the meter until the low-battery indicator appears, charge fully to 4.2V, and repeat — the display percentage stabilises after that.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360550944858,"sku":"BWCS-FKE150SL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360550977626,"sku":"BWCS-FKE150SL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360551010394,"sku":"BWCS-FKE150SL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-FKE150SL-1.webp?v=1778615946","url":"https:\/\/batteryweb.com\/products\/fluke-15b-replacement-battery-37v-650mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}