Looked up the 7002 and not only agree with the assessment from @bc above, I'm going to put that on my father's day wish list.

I don't know how much charge the 7002 pulls out of the battery to test that it can hold a charge but it does claim to do some form of a drain test, it doesn't do a load test so that would still need to be done at a battery store or mechanic.

I've only been borrowing basic chargers in the past, this thing is a very nice charger and importantly can act as voltage supply when disconnecting battery for repair etc

You might ask why ? Because it can only supply 7a vs 900 so things won't explode if you accidentally short something out, but if you manage to avoid shorting out anything you don't need to reprogram everything.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)