Battery maintance unit help please.

[Beedub]

hi guys ive got the draper battery master.......
http://www.dooyoo.co.uk/archive-motors/general-car...

the bumpfh that came with this unit says its ok to leave on a battery for Extended periods of time.... but it doesnt say how long its safe to do so..........

the car in question is a bmw z4m, the charger has an output of 300ma, so 0.3amps which is tiny i believe, is this indeed safe to leave on charge pretty much constantly, or am i risking boiling my battery by doing so...... hell can 0.3amps boil a battery?? lol

anyhelp with this one before i jet off would be much appreciated....

the manual state this is NOT a battery charger....

[Beedub]

[thinfourth2]

It will be fine.

You will be hard pressed to boil a modern battery with a modern charger.

Just ensure it is connected to the battery as a lot of cars disconnect the cigar socket on the ignition.

[Beedub]

cheers............................ i thought so.... your a star!!

byron