the lithium-ion polymer, long service life, more safety.syi
50000 MAH laptopPower Banks 50000mah /20000mah chargeur portable power bank portable portable MP3 MP lcd indicator lightshow, at any time control power long service life, more than 800 times the charging and discharging the use of advanced intelligent protection chip, the overcharge protection, discharge protection, overload protection, short circult protection,leakage protection and five heavy security protection..