Battery & tool skin compatibility*

Find what you have below — we'll show you what works with it.

*Note: Please carefully check the compatibility of your tools, batteries, and chargers below. If you have any questions, please contact our help center. System compatibility between 20V batteries and chargers. Certain previous manufactured items of Activ Energy (G1 - Generation 1) may experience compatibility issues with the latest 2026 Ferrex batteries or chargers (G3) such as Activ Energy charger Model XYZ563. 𝐍𝐨𝐭𝐞: 𝐌𝐨𝐝𝐞𝐥 𝐗𝐘𝐙563𝐚 (𝐆2) 𝐢𝐬 𝐜𝐨𝐦𝐩𝐚𝐭𝐢𝐛𝐥𝐞. The reason for this is the ongoing system design updates and technical developments, which may cause older versions to no longer be fully compatible in some cases. This is a common phenomenon in the industry, as technical standards continuously evolve and backward compatibility can therefore become limited. A well-known example is mobile applications (apps) that no longer function fully — or at all — on older smartphones.

If you have a tool

Ferrex 20V toolTool

Ferrex 2Ah
Ferrex 4Ah
Activ Energy 20V
Activ Energy 20/40V

Ferrex 40V toolTool

Ferrex 40V tool

Activ Energy 20/40V
Ferrex 2Ah
Ferrex 4Ah
Activ Energy 20V

If you have a battery

Ferrex 20V batteryBattery

All Ferrex 20V tools*
Ferrex 20V charger
Activ Energy 20/40V charger

Activ Energy 20V batteryBattery

All Ferrex 20V tools*
Ferrex 20V charger
Activ Energy charger

Activ Energy 20/40V batteryBattery

Activ Energy
20/40V

All Ferrex 20V tools*
Activ Energy 20/40V charger
Ferrex 20V charger

Ferrex 40V batteryBattery

Available from September 2026

If you have a charger

Ferrex 20V chargerCharger

Ferrex 20V
Activ Energy 20V
Activ Energy 20/40V

Activ Energy 20/40V chargerCharger

Activ Energy
charger

Ferrex 20V
Activ Energy 20V
Activ Energy 20/40V

Ferrex 40V chargerCharger

Available from September 2026

* Note: System compatibility between 20V batteries and chargers. Certain previous manufactured items of Activ Energy (G1 - Generation 1) may experience compatibility issues with the latest 2026 Ferrex batteries or chargers (G3) such as Activ Energy charger Model XYZ563. 𝐍𝐨𝐭𝐞: 𝐌𝐨𝐝𝐞𝐥 𝐗𝐘𝐙563𝐚 (𝐆2) 𝐢𝐬 𝐜𝐨𝐦𝐩𝐚𝐭𝐢𝐛𝐥𝐞. The reason for this is the ongoing system design updates and technical developments, which may cause older versions to no longer be fully compatible in some cases. This is a common phenomenon in the industry, as technical standards continuously evolve and backward compatibility can therefore become limited. A well-known example is mobile applications (apps) that no longer function fully — or at all — on older smartphones.