I've had a Terra Lux TLW-60 for a few months now. The unit produces bright light when plugged in, and pretty good light under battery power when the battery is charged. But I found that the battery did not retain it's charge for very long when new and now, after only a few months, the battery is BAD! The unit will not retain a charge and will only light if kept plugged in. Battery is completely dead and company website FAQ says no replacement is possible, says to "dispose of the unit". How could they willfully design this product to be limited to the (shorter than expected) life of the battery? Bad design! I will not buy from them again.