Dismantled a portable charger.
Four 18650 batteries.
Look at the battery label.
Cut the original nickel belt, two parallel, composed of a 7.2V battery pack.
Welding.
Slotted in the box.
Just to put the welding point.
The wire should also be slotted and placed inside.
Look！It stretched out.
And then fixed it below the drill with super glue.
So the rechargeable drill battery was finished.
There were 8.4V that can be used to charge directly.
Four 18650 batteries.
Look at the battery label.
Cut the original nickel belt, two parallel, composed of a 7.2V battery pack.
Welding.
Slotted in the box.
Just to put the welding point.
The wire should also be slotted and placed inside.
Look！It stretched out.
And then fixed it below the drill with super glue.
So the rechargeable drill battery was finished.
There were 8.4V that can be used to charge directly.
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