I see you're in Zimbabwe, and therefore need the 220-240V charger. The other thing that you need to mention when dealing with all us International friends is the frequency of your electrical system. In North America we run on a 60 HZ system, but in the United Kingdom I think they run on a 50 HZ system. Not sure what your system is running at.
In any event, if you want a battery tender, you should be looking for one that charges at around .2 amps and turns itself off when it reaches its desired battery voltage. Therre are lots of decent units over here at around $30.00 that will do the job nicely.
