You should be aware of this before importing cheap "rechargeable" toys and battery-powered household appliances, with regard to the supplied lithium- ion battery.
Accus li-ion 18650 3,7V 1300mAh 15A LGICR18650HA1
Lot of 2 Accus Li-Ion 3.7V 2.6Ah ICR18650 with PCB protection