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
New AP13J4K AP13J3K Battery for Acer Chromebook 11.6" C720 C720P-2600 C740-C4PE | eBay
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AP13J3K 45Wh battery for Acer Chromebook 11.6" C720 C720P C740 Laptop | Store Shoppe