Metabo CAS 18V replacement batteries

About this battery system

The Metabo CAS 18V system is a distinct 18V battery platform. The practical starting point is the part number printed on your existing battery or in your tool manual: match that identifier before comparing capacity, size, weight and price. Battery capacity alone cannot establish fitment, even when two packs advertise the same voltage.

For Metabo CAS 18V, confirm the exact battery series and compatible charger. Some manufacturers sell several battery families with similar voltage markings; never assume physical or electronic interchangeability.

Platform identified; manufacturer datasheets, exact pack specifications and individual fitments still awaiting research.

Battery chemistry, cells and energy

Rechargeable lithium-ion platform. Internal cell size, cell count, pack construction and specific safety circuitry have not been confirmed for this manufacturer series; do not assume a particular 18650 or 21700 design without a product-specific source.

Energy (Wh) = nominal voltage (V) × capacity (Ah). Divide by 1,000 for kWh. These are nominal estimates, not measured usable energy or guaranteed runtime. A 90Wh pack is 0.09kWh; at an illustrative constant 90W load, ideal runtime would be one hour before losses. Real power tools draw variable power.

Verified example pack part numbers and capacities are being researched for this system.

Choosing a replacement battery

Platform family is an initial research grouping, not a verified fitment for every tool or generation. Check exact tool model, battery part number, connector and charger compatibility. Do not assume matching voltage means interchangeable.