{"product_id":"einhell-bt-cd-1081-li-replacement-battery-108v-1500mah-li-ion","title":"Einhell BT-CD 10.8\/1 Li Replacement Battery 1500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEinhell BT-CD 10.8\/1 Li — 10.8V Li-ion Replacement Battery (BT-CD 10.8\/4 Li)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 10.8V, 1500mAh lithium-ion replacement battery for the Einhell BT-CD 10.8\/1 Li and BT-CD 10.8\/4 Li compact cordless drill\/drivers. It slots into the same battery bay and connects via the same slide-rail contact system as the original pack. Capacity is rated at 1500mAh (16.2Wh) — matched to the original specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBT-CD 10.8\/1 Li and BT-CD 10.8\/4 Li fit:\u003c\/strong\u003e\n    Both models share the same 10.8V slide-rail platform, battery bay dimensions, and BMS communication handshake — one pack works across both without adapter or modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through repeated trigger-pull events on a BT-CD 10.8 chassis. The BMS held overcurrent thresholds stable across motor-start inrush spikes without tripping into protection mode under normal drill and driver loads.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eMotor-start conditioning on first use:\u003c\/strong\u003e\n    Run the drill at half load — light drilling in wood or plastic — for the first two charge cycles before applying full torque. This lets the BMS log the motor's inrush current signature and set overcurrent thresholds accurately for your specific unit.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBMS cutoff on trigger-pull inrush surge in the BT-CD 10.8\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe BT-CD 10.8 motor draws a spike of current the instant the trigger closes — this inrush can be three to five times the steady running current. A new pack's BMS starts with conservative overcurrent thresholds and may interpret that spike as a fault. After two to three full charge-discharge cycles, the BMS recalibrates those thresholds against the actual motor behaviour. If cutouts continue beyond the break-in period, check the battery rail contacts for oxidation — resistance at the contact point amplifies the apparent voltage sag the BMS sees.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharger not recognising the pack after it has been in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells that have self-discharged below approximately 2.5V per cell will fall outside the voltage window most chargers use to verify a valid pack — the charger rejects the battery rather than risk charging a deeply discharged cell unsafely. On the Einhell 10.8V system, this shows as the charger LED blinking without entering a charge cycle. Insert the pack, wait 60 seconds, then remove and reinsert — some chargers will attempt a low-current recovery pulse on the second connection. If the charger still rejects it after two attempts, the cells have dropped below recoverable voltage, typically under 8.0V total pack voltage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416033624154,"sku":"BWCS-EHL081PW-1","price":57.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416033656922,"sku":"BWCS-EHL081PW-2","price":67.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416033689690,"sku":"BWCS-EHL081PW-3","price":74.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-EHL081PW-1.webp?v=1779759609","url":"https:\/\/batteryweb.com\/products\/einhell-bt-cd-1081-li-replacement-battery-108v-1500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}