This might help you re power supply.
You can buy adapters as well for batteries so that you plug them in and then put your andersen plug on the other end.
See in this video
I just hacked a spare charger adapter to fit the battery for supplying power having bought 2 drills with battery on each as it was cheaper than a standalone battery. One connector on the charger plate goes to a different input on the battery so it can be charged. You have to move that connector to the same position as on the drill to get output from the setup. Could post photos if needed but I think most people won't have two chargers for the same drill.
You can buy adapters as well for batteries so that you plug them in and then put your andersen plug on the other end.
See in this video
I just hacked a spare charger adapter to fit the battery for supplying power having bought 2 drills with battery on each as it was cheaper than a standalone battery. One connector on the charger plate goes to a different input on the battery so it can be charged. You have to move that connector to the same position as on the drill to get output from the setup. Could post photos if needed but I think most people won't have two chargers for the same drill.