No. 5 Rechargeable battery charging mark:
One is to write the RECHARGEABLE BATTERY;
Second, it will indicate the battery capacity, such as 1600mAh, 2000mAh;
Third, there will be rechargeable battery type signs, such as Ni-MH (nickel-metal hydride), Ni-Cd (nickel-cadmium).
At present, there are five categories on the market: nickel-cadmium, nickel-metal hydride, lithium ion, lead storage, lithium iron.