GAL 12V-20 compact battery charger
The GAL 12V-20 is a compact battery charger in the Bosch Professional product range. The charger has a maximum charging current of about 2 Ampere.
To provide an balance between fast charging time and limiting wear on batteries the charger uses a dual charging mode where it will quickly charge a battery to 80% capacity and then charge the remaining 20% at a lower current.
Although smaller and lighter than the GAL 12V-40 this charger chargers batteries at only about half the speed.
Charging speed
The minutes below are estimates.
| Battery capacity | Minutes to 80% | Minutes to 100% |
|---|---|---|
| 1.5 Ah | 40 | 50 |
| 2.0 Ah | 50 | 65 |
| 2.5 Ah | 64 | 80 |
| 3.0 Ah | 70 | 95 |
| 4.0 Ah | 96 | 125 |
| 6.0 Ah | 145 | 186 |
Availability
In December 2021 this was not listed on Bosch UK's website. But it was listed on the Bosch USA website.
Compatibility
The charger is meant for Bosch Professional 12V Max batteries, but also officially supports the older 10.8 volt batteries which have the same voltage but a different name.
The charger will also charge 10.8V and 12V batteries from other brands that fit as explained in the compatibility section on the 12V Max category page.
Exterior
The charger has a rectangular black plastic housing with a square footprint with rounded edges. The power cord is permanently attached on the back and has a black "brick" style plug which contains some power conversion electronics.
On the top is a receptacle for a single battery that is inserted upside down. There is a single green charging LED on the right.