{"product_id":"hilti-pm-40-mg-replacement-battery-108v-1500mah-li-ion","title":"Hilti B12\/2.6 10.8V Laser Level Replacement Battery 1500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHILTI PM 40-MG \/ PR 30-HVS A12 Series — 10.8V Li-ion Replacement Battery (B12\/2.6)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 10.8V 1500mAh Li-ion battery replaces the HILTI B12\/2.6 and compatible OEM packs across the PM 40-MG, PR 2-HS A12, PR 30-HVS A12, and PR 30-HVSG A12 laser level series. It slots into the same battery bay and connects to the same BMS handshake circuit the original pack used. Capacity is 1500mAh (16.2Wh) — confirmed from product data, not estimated.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePM 40-MG and PR-series compatibility:\u003c\/strong\u003e\n    These models share the same 10.8V lithium-ion platform, a common multi-pin connector, and the same BMS communication protocol. A single pack covers the full range because the battery management handshake is identical across the series — the charger and tool negotiate state-of-charge using the same data line.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through the PM 40-MG's standby and active scan modes, monitoring the BMS cutoff response under low-cell and over-temperature conditions. The protection circuit responded correctly at expected thresholds — no nuisance trips during normal laser operation.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLaser level storage between site visits:\u003c\/strong\u003e\n    If the tool sits in a van or site box for more than two weeks, store the battery at roughly 40–60% charge. Laser levels draw a small parasitic current from the battery even when off — a fully charged cell left connected will drift into over-discharge territory faster than a pack stored separately.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharger blinking red on a new 10.8V pack that's been sitting in storage\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion chargers include an acceptance voltage gate — if a cell group has dropped below roughly 2.5V per cell, the charger refuses to begin a charge cycle and signals the fault with a red blink. This is common with packs that have been stored discharged for several months. Some HILTI chargers include a recovery or \"boost\" mode that applies a low-current trickle to bring cells back above the gate voltage. If yours does not, a compatible Li-ion charger with a manual recovery function can pre-charge the pack to 9V total before returning it to the HILTI charger.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCapacity fade after repeated short top-up charges on the job site\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLaser levels on active sites get pulled off the charger and put back frequently — often after only a few percent of discharge. Repeated shallow cycling compresses the usable capacity range the BMS has profiled, and the pack begins reporting \"full\" at a lower actual charge over time. This is a BMS calibration drift, not cell failure. Run two full discharge-and-charge cycles — let the tool run until the low-battery indicator trips, then charge uninterrupted to 100% — to allow the BMS to recalibrate its state-of-charge window back to the full 1500mAh range.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416008196186,"sku":"BWCS-HFA120PW-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416008228954,"sku":"BWCS-HFA120PW-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416008261722,"sku":"BWCS-HFA120PW-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HFA120PW-1.webp?v=1779759245","url":"https:\/\/batteryweb.com\/products\/hilti-pm-40-mg-replacement-battery-108v-1500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}