Charger proper solid but without safety function

Positive side: large transformer, appears solid, not too hot. Price. Simple design (transformer + rectifier, no failure or easily repairable)
What you should know: no protection other than short circuit the fuse needs to be changed. There is no current limiting as other chargers. No measurement or voltage control charge termination. The user must estimate the time, monitoring current and disconnect may damage the battery. Therefore it is not for everyone, it takes a minimum of technical concept to use it well. There are chargers that detect the end of charging and enters the function continues, it is not the case with this one, hence its price somewhat elevé