This is a premium 4.0Ah high performance battery pack from the 10.8V series. Bosch Li-Ion technology ensures unique lifetime and runtime of each pack. Electronic cell protection (ECP) is built in to protect the battery against overload, overheating and total discharge, and for intelligent power management. It has 100% more runtime than 2.0Ah. It is compatible with all Bosch professional 10.8V tools. 2 year Bosch Premium Service applies to this battery, website registration is required.
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1 May 2015
Improvement over standard batteryInitial impressions are good. It charged quickly and lasts a long time in a drill, even for a 4.0Ah. An added bonus is that it allows the drill/ driver to stand on a bench or floor. Good design. I hope it has decent longevity as that seems to be the achilles heal of Li-ion batteries.