New AP13J4K AP13J3K Battery for Acer Chromebook 11.6" C720 C720P-2600 C740-C4PE | eBay
Acer Chromebook C720P-2661 LAC236 3920mAh / 45Wh Notebook Battery - BattDepot United States
Amazon.com: TREE.NB AP13J3K Battery Compatible with Acer Chromebook 11.6" 11 C740 C720 C720P Series Notebook AP13J4K KT.00304.001 KT.00303.001 (Short Cable 2.5cm. NOT fit for 4cm or 6cm Long Battery Cable.) : Electronics