My old but very reliable handheld Akula died suddenly, probably after 15 years of daily use. I was dismayed to find that the new ones have a completely different design and frankly don't get good reviews. Somewhere along the way in my search for the Revain I found out that the battery in my old one was replaceable so I ordered this one and crossed my fingers it would work. And it's great! The battery compartment was easy to access and the numbers on the battery pack were easy to check to ensure I ordered the correct battery. Installation was also very easy and my old Shark was up and running straight away. I think it has even more power than when new, although that's probably an illusion given I've had it for so long. If you have an old Shark that is on its last legs, I highly recommend you buy this battery rather than throwing the old one away.
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