I bought the HSB4126 model. I tested it on olive pruning!
I did 10 hours of pruning with the battery reaching 50%. That means you can comfortably work with one battery for two 8-hour shifts! I made about 9000 cuts up to 40mm in diameter. If you oil and clean it before each use, it's razor-sharp!

Unacceptable blades for a tree-cutting scissor..soft as soap..besides that, within nine months, almost all of them broke inside...gears, bearings, etc....
Non-existent warranty under the pretext of improperly sharpened blade, on the contrary, I paid for the repair...
For anyone who wants to throw away their money, go ahead and buy it....
Unacceptable dealership that tries to pass on their mistake to the consumer

The battery lasts four hours, each battery is very poor quality, the blade material is terrible, it constantly breaks after three months of pruning olive trees and three days of pruning orange trees. The pinion bearings and gear broke, unacceptable for its price. I have a Chinese one that I bought for 80€, much better in durability and blade quality, I've had it for three years

It's worth its money, very good and very powerful. Each battery lasts about 6 hours with over 3500 cuts on large and hard woods. I use it only as a tree cutter. I recommend it!