Currently running an unbranded 14AH AGM battery (because the stock battery died over the course of Winter) and it's definitely up to the job. I've also tried using a 10AH AGM battery and even that one was powerful enough, not sure how many attempts you'd get out of it though.

Cheers,
Greg

Since 1998 I have replaced the old battery with the Hawker and have no problems over 100.000 km! Even after the winter break of five months the Hawker has full power to start the motor! I´m very satisfied with it.
Cheers Hartmut

Quote from Gredner on 05.05.15 at 09:17:00:

There is nothing more to say. Does anyone also want to know which tyre or which engine oil is the best?

Kevin, this Hawker maybe a good choice, but you´ve been  asking for something smaller with less weight, so the new Lifepo4 accumulators may be concidered. My five cent: they are not availabele for small money ,  but i´ve got one with a 7,5 AH this spring, and it works fine and the weight is :900 Gramms, it´s small, and it has power. If it´s true what the sellers say, there should be no need to replace it for many years, and its plug and play as long as your rectifier don´t produce more than  14,5 Volts, the TR1 produces maximum 14,4 V under best circumstances, everything over will kill a Hawker same as an old Pb Battery ,
Regards Ali

Hab doch gar nix gesagt gegen die Hawker? Mein Englisch ist aber nicht so ganz gut, hab ich Mist geschrieben?
Gruß Ali

Ali,
Du hast nichts gegen die Hawker gesagt, aber: "...the TR1 produces maximum 14,4 V under best circumstances, everything over will kill a Hawker same as an old Pb Battery". Mit "Glück" habe ich die offensichtlich gute Lima-Regler-Kombination meiner TR gemeint.
Gruß
Hartmut