The rechargeable batteries of Bosch Professional machines are not directly compatible with the Bosch BSS825ALL Unlimited Series 8 hoover, as this cordless hoover is part of the Power For All Alliance. However, these batteries are compatible with many Bosch products in the green product line and other brands, not specifically with Bosch Professional machines.

If you are referring to specific Bosch Professional batteries designed for other appliances, they may not be directly compatible with this hoover. It is advisable to check the compatibility of the batteries directly with Bosch.