{"product_id":"black-decker-fs360-replacement-battery-36v-2000mah-ni-mh","title":"Black \u0026 Decker FS360 Replacement Battery 3.6V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBlack \u0026amp; Decker FS360 \/ FS360 Type 1 — 3.6V Ni-MH Replacement Battery (90500500)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 2000mAh Ni-MH replacement battery for the Black \u0026amp; Decker FS360 and FS360 Type 1 cordless screwdriver. It replaces OEM part number 90500500. Voltage and capacity match the original pack spec exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFS360 and FS360 Type 1 fitment:\u003c\/strong\u003e\n    Both variants run the same 3.6V single-rail architecture with the same physical connector block and cell cavity dimensions. The BMS handshake threshold is identical across both Type designations, so one pack covers both without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through the FS360 charger and monitored cell voltage at the terminals during charge acceptance and cutoff. The BMS terminated charge cleanly at full capacity with no false cutoff or trickle-lock on the first cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eNi-MH memory cycle reset on the FS360:\u003c\/strong\u003e\n    Unlike Li-ion packs, Ni-MH cells in the FS360 benefit from a full discharge-then-recharge cycle if the tool has been sitting unused for more than three months. Run the tool until torque noticeably drops, then charge fully before returning to normal use.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the FS360 cuts out instantly on trigger pull after a long storage period\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells that have self-discharged below approximately 0.9V per cell will cause the BMS to trip on the inrush current spike the moment the motor tries to start. The pack reads as present on the charger but the voltage rail collapses the instant load is applied. This is not a faulty battery — it is a protection response to undervoltage cells. Charge the pack for a full uninterrupted cycle before the first trigger pull to bring all cells above the BMS acceptance threshold.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFS360 charger light stays solid red and never switches to green\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA solid red light that never advances to green usually means the charger is detecting a cell voltage too low for normal charge acceptance — common after extended storage. The FS360 OEM charger requires each cell to sit above roughly 1.0V before it will begin the main charge cycle. Remove the pack, let it rest at room temperature for 15 minutes, then reseat it firmly in the charger. If the light shifts to green within a few minutes, the cells have recovered enough voltage for the charger to accept the pack.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416038146138,"sku":"BWCS-BPS360PW-1","price":41.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416038178906,"sku":"BWCS-BPS360PW-2","price":48.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416038211674,"sku":"BWCS-BPS360PW-3","price":53.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BPS360PW-1.webp?v=1779759664","url":"https:\/\/batteryweb.com\/products\/black-decker-fs360-replacement-battery-36v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}