Huawei HB554666RAW 3.7V 1700mAh Li-ion Wireless Network Interface Replacement Battery.

Cross Reference Fits.

Huawei - E5330, Huawei - E5330Bs-2, Huawei - E5336, Huawei - E5372, Huawei - E5373, Huawei - E5375, Huawei - EC5377, Huawei - E5377S-32