Bosch 12V 3.0 Ah Max Lithium-Ion Battery

I received the Bosch 12V Max Battery and I am very pleased with it. It is small enough to keep the tool light weight and give you more room to work. It is very long lasting and very durable. It charges fast and easily.

you can never have too many batteries ready to go when doing a job

This Bosch 12v 3aH battery is the same size as the 2aH. This battery does last a good bit longer than the smaller battery as it should. Any 12v Bosch battery charger will work in recharging these batteries.

Despite the list of approved chargers, any Bosch 12V or 10.8V charger should work. There is no real difference between these battery packs, other then the naming. The cells are nominal 3.6V and are charged with 4.2V - 3 in a pack. Depending on whether you take the nominal voltage, or the charging voltage, you get 10.8V or (roughly) 12V. It is similar with automotive and aviation, where 12V starter batteries are called 14V, because in automotive we use 2V per cell nominal, whereas in aviation they use the charging voltage of 2.3V. Or another example is Dewalt who calls their system 20V, roughly the 4.2V charging voltage, while most other vendors call these packs 18V, which is 5x of the nominal voltage of 3.6V.