The Dayi A7 charger is only suitable for A7 batteries.
Dayi a7 is durable and has ultra-low power consumption. The newly upgraded A7 lithium battery only consumes one third of the A6 battery with the same amount of electricity, and the storage time is longer, the storage time without exhaustion can be extended by 2-3 times. Super compatible, A7 lithium battery has strong compatibility and wide application, and can be used in A5 and A6 series tools.