Sorry for the late reply. Here is a charger that I found.
https://www.amazon.com/INIU-Portable-Charger-External-Powerbank/dp/B078691KP2/ref=mp_s_a_1_2?ie=UTF8&qid=1528062384&sr=1-2&refinements=p_n_condition-type%3A2224371011%2Cp_72%3A1248879011%2Cp_36%3A1253503011&pi=AC_SX236_SY340_FMwebp_QL65&keywords=portable+phone+charger&dpPl=1&dpID=41LZO1GyTXL&ref=plSrch