Welcome to TBONTB
TBONTB-branded laptop battery has perfect compatibility, reliability, and security, which can solve the problem of laptop battery life that to make your life and work more leisurely and free.

Battery Specification:
Condition:Brand New
Manufacturer Warranty:One-year
Battery Type:Lithium ion
Voltage:11.4V
Capacity:3880mAh/44Wh

Replace Part Number:
AP18K4K 3ICP5/81/68

Compatible with Laptop Models:
Acer Chromebook 311 CB311-9H-C4PP CB311-9HT-C3M2 CB311-9H-C7C8 CB311-9H-A14P CB311-9HT-C4EN CB311-9HT-C783 Series
Acer Chromebook 311 CB311-9HT-C9LK CB311-9H-C0VS CB311-9H-C98L CB311-9H-C3KK CB311-9H-C8YX CB311-9HT-C4UM Series
Acer Chromebook 311 CB311-9H-C68F CB311-9H-C38F CB311-9HT-C27Q CB311-9H-C4XC CB311-9H-C0Z8 CB311-9HT-C8V9 Series
Acer Chromebook 311 CB311-9H-C1JW CB311-9H-C86S CB311-9H-C12A CB311-9HT-C888 CB311-9H-C5KP Series
Acer Chromebook 311 C721-48BR C721-25AS C721-45UR C721-434R Series
Acer Chromebook 311 C733-C0RF C733-C37P C733-C6LC C733-C2E0 C733T-C8SZ C733T-C8S C733T-C67J Series
Acer Chromebook Spin 311 R721T-482Z R721T-49FS R721T-48A0 R721T-28RM Series

Using Tips:
1.We recommend that you open the back cover of your laptop to check your original battery model and appearance before placing an order, especially the position of the connector and the length of cable.
2.Please check the interface to make sure it's clean enough before installing new battery.
3.Please discharge the new battery to 5% (not 0%), then charge fully and cycle 3-4 times to wake up the new battery.