SKYRC iMAX B6AC V2 AC/DC Dual Power Professional LiPo Battery Balance Charger/Discharger

idk about that or what your budget is, but this one i got almost 2 years ago is pretty nice, also discharges to store batts: https://www.amazon.com/dp/B0722NGPBS?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_4