Review on Efficient RYOBI P135 18V One+ 6 Port Lithium Ion Battery Supercharger: Charger Only (Batteries not Included) by Lokesh Das

Ryobi P135 can charge 6 Ryobi batteries. It's nice and compact, fits easily on a shelf and has a carrying handle. It also has status indicators that can keep you informed of the charging status and also let you know about a bad battery. It is also very easy to put 6 batteries in the device as it is very stable. I was expecting the Ryobi P135 to charge six batteries in parallel, but found that it charges them individually in series. In other words, if you put 6 batteries in the bank, the first one will charge, then the second, then the third, and so on until all six batteries are charged. In practice this doesn't seem to be a big problem, just change the batteries in the sock and they will eventually charge.