Once you,ve used one you wouldn,t go back to the others,,,but the mistake i made was getting the 10ah its alright for a few hours but if your covering a fair bit of ground i would go for at least the 14ah
i made the same mistake using it on a lightforce 170,got a good 3/4 hours from the 10ah but just found myself wanting the extra hour now and then so il get a 14 next time
just replace the 100w bulb for a 50w it will double the battery life
never thought of that cheers,bit dim at times,me not the lamp