GBA 12V 4.0Ah battery

12V Max Cordless

The GBA 12V 4.0 Ah is Lithium Ion battery pack for the 12V Max battery system manufactured by Bosch.

With 4.0 Ah it used to be the highest capacity battery available in the battery system until the GBA 12V 6.0 Ah was introduced.

Availability

In 2021 this battery pack was not listed on Bosch UK's website. It is still available at some shops but seems to be on its way out in favor of the GBA 12V 6.0 Ah battery pack.

Exterior

The battery pack contains six cylindrical 18650 cells. Three of them are grouped together upright so that the top part of the battery pack can fit inside a handle of a power tool.

The other three cells are placed next to each other in a rectangular enclosure so that the tool has a stable base when standing upright on the battery pack.

The top part of the battery pack has a black plastic casing with recessed electrical contacts on top. The bottom part has latches on both sides to retain the battery when inserted in a tool.

On the side of the base the text "Bosch 12V 4.0 Ah Li-Ion" is printed.