Bosch Professional 12V System Battery Starter Set: 2x GBA 12V 6.0Ah Battery + Quick Charger GAL 12V-40

Ich hatte Glück und es als ein sehr gutes Angebot bekommen. Über die Qualität und Langebigkeit brauche ich hier nicht mehr zu sprechen - einzigartig.

I bought this with the two 6Ah batteries, an extra 3Ah battery, and four Bosch Professional tools: The tiny handheld vacuum, the GKF 12V-8 edge router, the GSR 12V-15 driver drill, and the GDR 12V-105-LI impact driver drill.I was a little worried how big the 6Ah batteries were, and if they'd be overly clumsy on these tools, but as you can see from the picture, they're not at all, and they fit all my tools, including the vacuum.Having a larger battery not only provides longer operation, but also more power - I assume because there are more cells, and each cell has a max amps of power it can provide. Add more cells, you can draw more amps to provide extra torque, or in the case of my vacuum, extra sucking power. It's really quite noticeable on the vacuum, switching from the 3Ah battery to the 6Ah one. It gets much more usable, especially if you add an extra filter to save on the expensive one bundled with the vacuum. The other tools just get extra torque, and extra oomph. Plus, the drivers can now stand on the battery. I bought the small battery for lightness, handiness, and reducing the size in case I can't fit my tools somewhere with the large 6Ah batteries.If you use this charger with smaller batteries, note that have to push them into the socket so it clicks before it starts charging.The manual to the charger is missing a pretty vital piece of information: how to decipher the green charging LED. A regular pulsing means it's fast charging, and there's less than an 80% charge on the battery. Once it switches to a pulse with a long on-time and a short off-time, it's at 80% charge, and is charging at a slower pace. Once it stops pulsing and just glows green, it's 100% charged.If you want to significantly extend the lifespan of your batteries, you should remove them when it reaches 80%, and you should try to store them at around 50% charge. What really kills Li-ion batteries more than anything else, is being kept at either extreme (fully charged or fully depleted) for a long time. This is also why you always receive batteries and battery-powered devices charged about half. Unfortunately, this charger doesn't show you how much charge a battery has, other than when it reaches 80%, so you don't know when your battery is at 50%.The battery indicators on the Bosch tools are also quite coarse, with only three LEDs to show empty, 33, 66, and 100%, but at least this helps you know when you're at 66%-ish, which is also a good charge to store at.