The better quality battery 5, battery 7 on the market can be used,
More common are Philaepu No. 5 rechargeable battery, Shuo and Bo No. 5 battery, Philaepu No. 7 battery, Nanfu No. 5 rechargeable battery, purple rice battery, etc., it is recommended to choose some big names and good quality, so that the battery will be more durable.