Great for bringing 'dead' batteries to life again
925105
I ordered this charger to replace a Powerex C204.  I had thrown out a lot of batteries because my old charger was unable to rejuvenate them (also the old charger made it difficult to identify which battery of a given pair was bad).  Anyhow, the Lacrosse charger has worked miracles rejuvenating batteries that I had planned to trash.  Beware that the Refresh option takes DAYS to work, i.e. the charger drains and charges the batteries up to 20 continuous times until it reaches the maximum charge capacity.  I initially thought the charger had gotten 'stuck' because I could not see any changes in the display, but all it needed was some time (days) to slowly go through the refresh process.  I am quite happy with this product (although the directions could certainly be improved!).
3238825
I thought sub $1000 UPS's were disposable objects, but after having several fail that were still fine and just had dead batteries I decided to try replacing them.  I have a Tripplite unit and replacement was trivially easy. One screw and four slide on terminals later I had new batteries for less than half the cost of a new unit. Recharging took overnight and now I am using it again.

I have not done any load testing to verify that there is a greater life with the new batteries, but it has brought me down softly during several power failures since then (we live in the country and have frequent outages).

I heartily recommend this product with the only caveat being that you need to dispose of the replaced batteries properly and that can be non-trivial if your local dump does not handle them.
2415062
It's sometimes hard to tell whether a rechargeable battery is past its prime unless you track the usage of each cell.  With this charger I'm not only able to charge four cells independently, but I can also run them through a refresh cycle of discharges & recharges, and I can test them for capacity.  As it turns out, I discovered that several of my older cells had significantly less capacity than than others.  When I discarded the really bad ones and started pairing cells with others having similar capacities the life and performance of remotes and other devices improved.

This charger not only charges but also helps me keep my collection of rechargeable batteries free of marginal cells.  This improves the life of all the batteries by eliminating the problem cells.  Great tool!
3324025
works very well. A nice option to keeping spare batteries charged
4431936
This is super easy to use, helps me trouble-shoot issues with battery operated stuff, helped me to get rid of bad old batteries, and helps me to keep on top which rechargeable batteries are good to go.
3183557
My Neato seemed to be on its last leg until I switched out the batteries! It's like new again and gets most of the level done before needing to recharge.
2835898
Had a severely discharged battery in my Olympus camera, it would not charge nor turn on. This solved the problem, kick started the battery back  up and charged.
1502974
Works well, even on batteries that wouldn't take a charge using the older generation chargers.
956324
Works great!  My camera would not charge the batteries anymore and this works perfect.
13618
My 6 year old cordless phone kept dying. Replaced the batteries with this and now they operate like new. Our phone doubles as a baby monitor and we would use it for 4+ hours without dying. Great batteries.
3230909
I can't believe we went for two years with a dead battery, push starting my daughters TTR 50 when this was so inexpensive and worked great right away after my husband charged it.
3836848
Decided to replace the spent batteries in my emergency lights for the house after going through the power outage of Hurricance Sandy (Superstorm,... whatever we're calling it.)  Not that this would have helped with a one week outage, but it's nice to have a few lights that come on in the house when the power goes off unexpectedly, which lately given the wild weather we've seen, happens more often than in the past.

These batteries fit in perfectly and charged quickly.  Tested them and they work great.  Not sure what else I can say about batteries :)  But they do what I needed them to do.
2126735
I bought this to hold batteries for my off camera flash while I was shooting events during the recent Formula 1 race weekend in Austin. I did not want to be in a position where I had to go hunting for batteries when the first set ran out and, more importantly, I didn't want to confuse the charged with the dead batteries. Because I put the batteries in facing up when they were fully charged, once they were dead, they were entered with the top of the battery at the bottom of the holder. This way I never had to wonder if the battery I was putting in the flash had charge or not.

Brilliant product -- highly recommend as a great power organizer.
1468373
Works well...much better than using batteries.
3802191
Worked perfectly on the trip to keep new batteries alway ready
3229407
Great for replacing batteries in smoke detectors.
45747
Works great.  Shows which rechargeable batteries are no longer functional and which still work.  No more overcharging and damaging the batteries!