He all I have a the light force 170. On the battery that came with the light it is marked 12V 7.2AH Sealed AGM Battery. Now I was thinking about buying an extra battery or 2 to make sure I never run out of light, but then my wife said I should look at the batteries in my Ice fishing sonar. So I pulled one out they look the same, except the fish battery says 12V 7.5 AH and reads sealed lead acid. Can I use both? I am sure there is probably not much difference between a 7.2 AH and 7.5Ah other than a few minutes use?