{"product_id":"ego-cs1400-replacement-battery-56v-4000mah-li-ion","title":"56V EGO CS1400 Chainsaw Replacement Battery 4.0Ah Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEGO Cordless Chainsaw — 56V Li-ion Replacement Battery\u003c\/h2\u003e\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 56V 4000mAh (224Wh) Li-ion battery replaces the BA1400T, BA2242T, BA2800T, BA4200T, BA5600T, BA5675, BA6720T, and BT2240T packs used in EGO POWER+ 56V ARC Lithium chainsaws. It fits the CS1400, CS1403, CS1600, CS1604, and over 19 additional models that share the same 56V battery platform. Voltage and connector are matched to the original spec — no adapters needed.\u003c\/p\u003e\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCross-model chainsaw compatibility:\u003c\/strong\u003e These CS-series saws share a common 56V power rail, slide-lock connector, and BMS communication protocol, which is why one battery pack spans the full lineup.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e We ran full charge\/discharge cycles — the BMS held voltage steady under motor load and tripped cleanly at the low-voltage cutoff without thermal flags.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use tip for Li-ion chainsaw packs:\u003c\/strong\u003e Slot the battery in and run the saw through a full session before recharging — this lets the BMS calibrate the state-of-charge accurately from the start.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003chr class=\"bpw-desc-divider\"\u003e\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy 56V matters for a brushless chainsaw motor\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe CS1400's brushless motor runs at 6,800 RPM and draws sharp current spikes when biting through dense wood. A 56V pack at 4000mAh delivers 224Wh of stored energy, giving the motor enough overhead to sustain those peaks without the BMS throttling output. Running a lower-capacity or underspec pack forces the BMS to cut current early — that shows up as the chain slowing under load, not as a flat battery warning.\u003c\/p\u003e\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery not seating or failing to power on after storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion packs stored below roughly 20% charge for extended periods can drop into a deep-discharge state the saw's interface won't wake from. The pack isn't dead — the BMS has locked output to protect the cells. Connect it to an EGO-compatible charger and leave it for 30–60 minutes without interruption; most chargers apply a trickle current that recovers the pack before switching to full charge mode.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43175816757338,"sku":"BWCS-EHT400PW-1","price":108.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43175816790106,"sku":"BWCS-EHT400PW-2","price":127.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43175816822874,"sku":"BWCS-EHT400PW-3","price":141.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-EHT400PW-1.webp?v=1775236243","url":"https:\/\/batteryweb.com\/products\/ego-cs1400-replacement-battery-56v-4000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}