Unilight now sells resistors specifically for use with Life batteries:

http://www.unilight.at/shop/eu/addon...uer-lifepo.php

The instructions (for both these and the 'standard' 3s Lipo resistors) say to add them in addition to the included resistor - I don't think it matters where.

If you are worried about doing this then you can use the relevant adapter cables (however these aren't currently available for 9.9v batteries):

http://www.unilight.at/shop/eu/addon...r-cable-8w.php