I'm not gonna lie, I don't think I would leave it on overnight just because of other reviews, and I left the protective plastic on the LCD screen and never touched it because of the problems people had with it

Came with cracked alligator clamp (cheap plastic)

I like that it is compact, tells you what is going on with the battery while it is charging/maintaining, it is rigid plastic and can take a drop onto concrete from time to time.

But that went about as well as you might expect, with the glue not being strong enough and the plastic being too brittle.

In fact the plastic continued to crumble as I tried to repair it.

If you wish to put the charger on a wall a very durable plastic rack where the clamp connectors can be hung.

If you wish to put the charger on a wall a very durable plastic rack where the clamp connectors can be hung.

(A softer plastic insulation may be the reason for that impression.

Like I said, it has done what it has to do but the plastic is a bit cheap.

Very brittle plastic case

There is little hope for this 400 model, the plastic is far too brittle and thin to be glued or welded

That means I fully expect that the flimsy plastic mount, and possibly even the clamps and probes, may need to be replaced over the useful life of the charger.

Bad A$$.Love

The charger worked as it should for the first couple of charges, but then all of a sudden it would get stuck in 'charging' mode indefinitely no matter how long the charger was left connected to various batteries, never advancing to maintenance mode on the LCD display.

Depressing as it is a sealed battery that shouldn’t vent and prior to now has never had any issues

After a couple failed battery charger purchases, the Optima performance maintainer works as it should

But I actually read the manual for the first time and since that, I’ve recovered 2 of my battery’s that have been well dead for years